Better JNI check and improved SerialGC support

Before this commit, the code `DefaultFileTypeDetector` implied that the
default file system provider is always an instance of
`UnixFileSystemProvider`. It's not true when
`-Djava.nio.file.spi.DefaultFileSystemProvider` is specified.

This commit replaces the strict class cast with a conditional one, and
the new code returns a no-op file type detector in cases when the
default file system provider is overridden.

.github/README.md

@@ -24,8 +24,7 @@ can be found on the [releases page](https://github.com/JetBrains/JetBrainsRuntim
 
 | IDE Version | Latest JBR                                                                                              | Date Released |
 |-------------|---------------------------------------------------------------------------------------------------------|---------------|
-| 2025.1      | [21.0.6-b895.91](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.6b895.91)  | 18-Feb-2025   |
-| 2024.3      | [21.0.6-b631.39](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.6b631.39)  | 10-Feb-2025   |
+| 2024.3      | [21.0.5-b631.28](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.5b631.28)  | 26-Nov-2024   |
 | 2024.2      | [21.0.4-b509.30](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.5b509.30)  | 26-Nov-2024   |
 | 2024.1      | [21.0.2-b346.3](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.2b346.3)    | 30-Jan-2024   |
 
@@ -116,22 +115,16 @@ coverage of all the details.
 > It would usually have meaningful advice on how to solve the problem.
 
 ### Linux (Docker)
-Download an image from [Docker Hub](https://hub.docker.com/repository/docker/jetbrains/runtime/general) related to your architecture:
+Create a container (use the `mkdocker...` variant for your architecture):
 ```
-$ docker pull jetbrains/runtime:oraclelinux8_aarch64
+$ cd jb/project/docker
+$ ./mkdocker_x86_64.sh
+...
+Successfully built 942ea9900054
 ```
-or
-```
-$ docker pull jetbrains/runtime:oraclelinux8_x64
-```
-Create and run a new container from the downloaded image
-```
-$ docker run -v $JetBrainsRuntime:/JetBrainsRuntime -it jetbrains/runtime:oraclelinux8_[arch]
-```
-where `$JetBrainsRuntime` is a full path to the directory where the repository was cloned to.
-
-Run these commands in the container:
+Run these commands in the new container:
 ```
+$ docker run -v `pwd`../../../../:/JetBrainsRuntime -it 942ea9900054
 # cd /JetBrainsRuntime
 # sh ./configure
 # make images

.github/actions/get-gtest/action.yml

@@ -49,6 +49,6 @@ runs:
     - name: 'Export path to where GTest is installed'
       id: path-name
       run: |
-        # Export the absolute path
-        echo "path=`pwd`/gtest" >> $GITHUB_OUTPUT
+        # Export the path
+        echo 'path=gtest' >> $GITHUB_OUTPUT
       shell: bash

.github/actions/get-jtreg/action.yml

@@ -49,6 +49,6 @@ runs:
     - name: 'Export path to where JTReg is installed'
       id: path-name
       run: |
-        # Export the absolute path
-        echo "path=`pwd`/jtreg/installed" >> $GITHUB_OUTPUT
+        # Export the path
+        echo 'path=jtreg/installed' >> $GITHUB_OUTPUT
       shell: bash

.github/workflows/main.yml

@@ -326,6 +326,17 @@ jobs:
       bootjdk-platform: linux-x64
       runs-on: ubuntu-22.04
 
+  test-macos-x64:
+    name: macos-x64
+    needs:
+      - build-macos-x64
+    uses: ./.github/workflows/test.yml
+    with:
+      platform: macos-x64
+      bootjdk-platform: macos-x64
+      runs-on: macos-13
+      xcode-toolset-version: '14.3.1'
+
   test-macos-aarch64:
     name: macos-aarch64
     needs:

.jcheck/conf

@@ -36,6 +36,6 @@ pattern=^([124-8][0-9]{6}): (\S.*)$
 dirs=test/jdk|test/langtools|test/lib-test|test/hotspot/jtreg|test/jaxp
 
 [checks "copyright"]
-files=^(?!LICENSE|license\.txt|.*\.bin|.*\.gif|.*\.jpg|.*\.png|.*\.icon|.*\.tiff|.*\.dat|.*\.patch|.*\.wav|.*\.class|.*-header|.*\.jar).*
+files=^(?!LICENSE|license\.txt|.*\.bin|.*\.gif|.*\.jpg|.*\.png|.*\.icon|.*\.tiff|.*\.dat|.*\.patch|.*\.wav|.*\.class|.*-header|.*\.jar|).*
 oracle_locator=.*Copyright \(c\)(.*)Oracle and/or its affiliates\. All rights reserved\.
 oracle_validator=.*Copyright \(c\) (\d{4})(?:, (\d{4}))?, Oracle and/or its affiliates\. All rights reserved\.

Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -24,9 +24,8 @@
 #
 
 ###
-### This file is just a very small wrapper which will include make/PreInit.gmk,
-### where the real work is done. This wrapper also performs some sanity checks
-### on make that must be done before we can include another file.
+### This file is just a very small wrapper needed to run the real make/Init.gmk.
+### It also performs some sanity checks on make.
 ###
 
 # The shell code below will be executed on /usr/bin/make on Solaris, but not in GNU Make.
@@ -59,7 +58,7 @@ ifeq ($(filter /%, $(lastword $(MAKEFILE_LIST))),)
 else
   makefile_path := $(lastword $(MAKEFILE_LIST))
 endif
-TOPDIR := $(strip $(patsubst %/, %, $(dir $(makefile_path))))
+topdir := $(strip $(patsubst %/, %, $(dir $(makefile_path))))
 
-# ... and then we can include the real makefile to bootstrap the build
-include $(TOPDIR)/make/PreInit.gmk
+# ... and then we can include the real makefile
+include $(topdir)/make/Init.gmk

bin/idea.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (c) 2009, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2009, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -127,8 +127,8 @@ if [ "$VERBOSE" = true ] ; then
   echo "Will generate IDEA project files in \"$IDEA_OUTPUT\" for project \"$TOPLEVEL_DIR\""
 fi
 
-cd $TOP ; make idea-gen-config ALLOW=TOPLEVEL_DIR,IDEA_OUTPUT_PARENT,IDEA_OUTPUT,MODULES TOPLEVEL_DIR="$TOPLEVEL_DIR" \
-    IDEA_OUTPUT_PARENT="$IDEA_OUTPUT_PARENT" IDEA_OUTPUT="$IDEA_OUTPUT" MODULES="$*" $CONF_ARG || exit 1
+cd $TOP ; make -f "$IDEA_MAKE/idea.gmk" -I "$OPENJDK_DIR" idea TOPLEVEL_DIR="$TOPLEVEL_DIR" \
+    MAKEOVERRIDES= IDEA_OUTPUT_PARENT="$IDEA_OUTPUT_PARENT" OUT="$IDEA_OUTPUT/env.cfg" MODULES="$*" $CONF_ARG || exit 1
 cd $SCRIPT_DIR
 
 . $IDEA_OUTPUT/env.cfg

doc/hotspot-style.html

@@ -217,10 +217,10 @@ file as the first include line. Declarations needed by other files
 should be put in the .hpp file, and not in the .inline.hpp file. This
 rule exists to resolve problems with circular dependencies between
 .inline.hpp files.</p></li>
-<li><p>Some build configurations use precompiled headers to speed up the
-build times. The precompiled headers are included in the precompiled.hpp
-file. Note that precompiled.hpp is just a build time optimization, so
-don't rely on it to resolve include problems.</p></li>
+<li><p>All .cpp files include precompiled.hpp as the first include
+line.</p></li>
+<li><p>precompiled.hpp is just a build time optimization, so don't rely
+on it to resolve include problems.</p></li>
 <li><p>Keep the include lines alphabetically sorted.</p></li>
 <li><p>Put conditional inclusions (<code>#if ...</code>) at the end of
 the include list.</p></li>

doc/hotspot-style.md

@@ -150,10 +150,10 @@ the first include line. Declarations needed by other files should be put
 in the .hpp file, and not in the .inline.hpp file. This rule exists to
 resolve problems with circular dependencies between .inline.hpp files.
 
-* Some build configurations use precompiled headers to speed up the
-build times. The precompiled headers are included in the precompiled.hpp
-file. Note that precompiled.hpp is just a build time optimization, so
-don't rely on it to resolve include problems.
+* All .cpp files include precompiled.hpp as the first include line.
+
+* precompiled.hpp is just a build time optimization, so don't rely on
+it to resolve include problems.
 
 * Keep the include lines alphabetically sorted.
 

doc/hotspot-unit-tests.html

@@ -245,7 +245,7 @@ compare C string contents. There are also case-insensitive versions
 <p>All GoogleTest asserts print compared expressions and their values,
 so there is no need to have them in error messages. Asserts print only
 compared values, they do not print any of interim variables, e.g.
-<code>ASSERT_TRUE((val1 == val2 &amp;&amp; isFail(foo(8))) || i == 18)</code>
+<code>ASSERT_TRUE((val1 == val2 &amp;&amp; isFail(foo(8)) || i == 18)</code>
 prints only one value. If you use some complex predicates, please
 consider <code>EXPECT_PRED*</code> or <code>EXPECT_FORMAT_PRED</code>
 assertions family, they check that a predicate returns true/success and

doc/hotspot-unit-tests.md

@@ -172,7 +172,7 @@ Provide informative, but not too verbose error messages.
 All GoogleTest asserts print compared expressions and their values, so
 there is no need to have them in error messages. Asserts print only
 compared values, they do not print any of interim variables, e.g.
-`ASSERT_TRUE((val1 == val2 && isFail(foo(8))) || i == 18)` prints only
+`ASSERT_TRUE((val1 == val2 && isFail(foo(8)) || i == 18)` prints only
 one value. If you use some complex predicates, please consider
 `EXPECT_PRED*` or `EXPECT_FORMAT_PRED` assertions family, they check that
 a predicate returns true/success and print out all parameters values.

jb/project/docker/Dockerfile-jbrTest

@@ -0,0 +1,57 @@
+# NOTE: This Dockerfile is meant to be used from the mkdocker_jbrtest.sh script.
+
+# Pull a concrete version of Linux that does NOT recieve updates after it's
+# been created.  This is so that the image is as stable as possible to make
+# image creation reproducible.
+# NB: this also means there may be no security-related fixes there, need to
+# move the version to the next manually.
+
+ARG ARCH_FROM
+ARG ARCH=i386
+ARG OS_NAME
+ARG OS_VERSION
+
+# jetbrains/runtime:jbrTest_${os_name}${os_version}-$arch
+FROM ${ARCH_FROM}/${OS_NAME}:${OS_VERSION}
+
+COPY jbr-11_0_16-linux-x86-b2043.64.tar.gz /jbr/
+ARG ARCH
+RUN \
+    if [ "$ARCH" = "i386" ]; then \
+      # Set up boot JDK for building
+      cd /jbr && \
+          tar --strip-components=1 -xzf jbr-11_0_16-linux-x86-b2043.64.tar.gz && \
+          rm jbr-11_0_16-linux-x86-b2043.64.tar.gz; \
+      echo Installing packages required for i386 only; \
+      dpkg --add-architecture i386; \
+      apt-get update -y; \
+      apt-get install -y \
+          libc6:i386 \
+          libncurses5 libncurses5:i386 \
+          libstdc++6:i386 \
+          zlib1g:i386; \
+    else \
+      echo Skipping the step installing packages specific for the platform; \
+    fi; \
+    apt-get update -y; \
+    apt-get install -y \
+        binutils:${ARCH} \
+        libcanberra-gtk-module:${ARCH} \
+        libgtk2.0-0:${ARCH} \
+        libxext6:${ARCH} \
+        libxi6:${ARCH} \
+        libxrender-dev:${ARCH} \
+        libxtst6:${ARCH} \
+        libxrandr2:${ARCH} \
+        libfreetype6:${ARCH} \
+        fontconfig:${ARCH} \
+        libnss3:${ARCH} \
+        libatk-bridge2.0-0:${ARCH} \
+        libgbm1:${ARCH} \
+        libxkbcommon0:${ARCH} \
+        libasound2:${ARCH};\
+    apt-get clean all
+
+ENV JAVA_HOME=/jbr
+ENV DISPLAY=:0
+

jb/project/docker/Dockerfile-jbrTest.musl

@@ -0,0 +1,35 @@
+# NOTE: This Dockerfile is meant to be used from the mkdocker_jbrtest.sh script.
+
+# Pull a concrete version of Linux that does NOT recieve updates after it's
+# been created.  This is so that the image is as stable as possible to make
+# image creation reproducible.
+# NB: this also means there may be no security-related fixes there, need to
+# move the version to the next manually.
+
+ARG ARCH_FROM
+ARG ARCH=i386
+ARG OS_NAME
+ARG OS_VERSION
+
+# jetbrains/runtime:jbrTest_${os_name}${os_version}-$arch
+FROM ${ARCH_FROM}/${OS_NAME}:${OS_VERSION}
+#FROM arm64v8/alpine:3.12
+
+ARG ARCH
+RUN \
+    apk --no-cache add --update \
+        binutils=2.34-r2 \
+        libcanberra-gtk2=0.30-r5 \
+        gtk+2.0=2.24.32-r1 \
+        libxext=1.3.4-r0 \
+        libxrender-dev=0.9.10-r3 \
+        libxtst=1.2.3-r3 \
+        freetype=2.10.4-r2 \
+        fontconfig=2.13.1-r2 \
+        font-xfree86-type1=1.0.4-r0
+
+COPY jbrsdk_17.tar.gz /jdk17/
+RUN cd /jdk17 && tar --strip-components=1 -xzf jbrsdk_17.tar.gz && rm /jdk17/jbrsdk_17.tar.gz
+
+ENV JAVA_HOME=/jdk17
+ENV DISPLAY=:0

jb/project/docker/Dockerfile.alpine

@@ -0,0 +1,45 @@
+# NOTE: This Dockerfile is meant to be used from the mkdocker_musl_<arch>.sh script.
+
+# Pull a concrete version of Linux that does NOT recieve updates after it's
+# been created.  This is so that the image is as stable as possible to make
+# image creation reproducible.
+# NB: this also means there may be no security-related fixes there, need to
+# move the version to the next manually.
+FROM alpine:3.14
+
+# Install the necessary build tools
+RUN apk --no-cache add --update \
+      alsa-lib-dev=1.2.5-r2 \
+      autoconf=2.71-r0 \
+      bash=5.1.16-r0 \
+      build-base=0.5-r3 \
+      bzip2=1.0.8-r1 \
+      cups-dev=2.3.3-r3 \
+      file=5.40-r1 \
+      fontconfig=2.13.1-r4 \
+      fontconfig-dev=2.13.1-r4 \
+      freetype-dev=2.10.4-r3 \
+      git=2.32.7-r0 \
+      grep=3.7-r0 \
+      libx11-dev=1.7.3.1-r0 \
+      libxext-dev=1.3.4-r0 \
+      libxrandr-dev=1.5.2-r1 \
+      libxrender-dev=0.9.10-r3 \
+      libxt-dev=1.2.1-r0 \
+      libxtst-dev=1.2.3-r3 \
+      linux-headers=5.10.41-r0 \
+      rsync=3.2.5-r0 \
+      tar=1.34-r1 \
+      wayland-dev=1.19.0-r0 \
+      wayland-protocols=1.21-r0 \
+      zip=3.0-r9 \
+      vulkan-headers=1.2.170-r0 \
+      vulkan-loader-dev=1.2.170-r1 \
+      glslang=8.13.3743-r1
+
+COPY gtk-shell.xml /gtk-shell.xml
+
+RUN git config --global user.email "teamcity@jetbrains.com" && \
+    git config --global user.name "builduser" && \
+    git config --global --add safe.directory '*' && \
+    git config --global http.postBuffer 524288000

jb/project/docker/Dockerfile.oraclelinux

@@ -0,0 +1,80 @@
+# NOTE: This Dockerfile is meant to be used from the mkdocker_<arch>.sh script.
+
+# Pull a concrete version of Linux that does NOT recieve updates after it's
+# been created.  This is so that the image is as stable as possible to make
+# image creation reproducible.
+# NB: this also means there may be no security-related fixes there, need to
+# move the version to the next manually.
+
+FROM oraclelinux:8
+
+# Install the necessary build tools
+RUN yum -y update && \
+    yum -y install gcc-toolset-10-10.1-0.el8 && \
+    yum -y install --enablerepo=ol8_codeready_builder \
+        alsa-lib-devel-1.1.9-4.el8 \
+        at-spi2-atk-devel-2.26.2-1.el8 \
+        autoconf-2.69-29.el8_10.1 \
+        automake-1.16.1-6.el8 \
+        bison-3.0.4-10.el8 \
+        bzip2-libs-1.0.6-26.el8 \
+        cairo-devel-1.15.12-6.el8 \
+        cups-devel-2.2.6-60.el8_10 \
+        file-5.33-26.el8 \
+        flex-2.6.1-9.el8 \
+        fontconfig-devel-2.13.1-4.el8 \
+        freetype-devel-2.9.1-9.el8 \
+        git-2.43.5-1.el8_10 \
+        git-core-2.43.5-1.el8_10 \
+        libtool-2.4.6-25.el8 \
+        libXcomposite-0.4.4-14.el8 \
+        libXdamage-1.1.4-14.el8 \
+        libXi-devel-1.7.10-1.el8 \
+        libxkbcommon-0.9.1-1.el8 \
+        libXrandr-devel-1.5.2-1.el8 \
+        libXrender-devel-0.9.10-7.el8 \
+        libXt-devel-1.1.5-12.el8 \
+        libXtst-devel-1.2.3-7.el8 \
+        make-devel-4.2.1-11.el8 \
+        mesa-libgbm-23.1.4-3.el8_10 \
+        ninja-build-1.8.2-1.el8 \
+        perl-IPC-Cmd-1.02-1.el8 \
+        rsync-3.1.3-19.el8_7.1 \
+        unzip-6.0-46.el8 \
+        wayland-devel-1.21.0-1.el8 \
+        wayland-protocols-devel-1.25-1.el8 \
+        pango-devel-1.42.4-8.el8 \
+        python36-3.6.8-39.module+el8.10.0+90274+07ba55de \
+        cmake-3.26.5-2.el8 \
+        vulkan-headers-1.3.250.1-1.el8 \
+        vulkan-loader-devel-1.3.250.1-1.el8 \
+        vulkan-validation-layers-1.3.250.1-1.el8 && \
+    yum -y clean all
+
+COPY gtk-shell.xml /gtk-shell.xml
+
+RUN git config --global user.email "teamcity@jetbrains.com" && \
+    git config --global user.name "builduser" && \
+    git config --global --add safe.directory '*' && \
+    git config --global http.postBuffer 524288000
+
+ENV PATH="/opt/rh/gcc-toolset-10/root/usr/bin:${PATH}"
+ENV LD_LIBRARY_PATH="/opt/rh/gcc-toolset-10/root/usr/lib64:/opt/rh/gcc-toolset-10/root/usr/lib:/opt/rh/gcc-toolset-10/root/usr/lib64/dyninst:/opt/rh/gcc-toolset-10/root/usr/lib/dyninst:/opt/rh/gcc-toolset-10/root/usr/lib64:/opt/rh/gcc-toolset-10/root/usr/lib"
+ENV PKG_CONFIG_PATH="/opt/rh/gcc-toolset-10/root/usr/lib64/pkgconfig"
+
+# Build GLSLC
+RUN git clone https://github.com/google/shaderc --branch v2023.6 \
+  && cd shaderc \
+  && ./utils/git-sync-deps \
+  && mkdir build \
+  && cd build \
+  && cmake \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=/usr/local \
+    -DSHADERC_SKIP_TESTS=ON \
+    -DSHADERC_SKIP_EXAMPLES=ON \
+    -DSHADERC_SKIP_COPYRIGHT_CHECK=ON \
+    -DSPIRV_SKIP_EXECUTABLES=ON \
+    -DENABLE_SPVREMAPPER=OFF \
+    .. \
+  && make install

jb/project/docker/Dockerfile.ubuntu.x86

@@ -0,0 +1,50 @@
+# NOTE: This Dockerfile is meant to be used from the mkdocker_x86.sh script.
+
+# Pull a concrete version of Linux that does NOT receive updates after it's
+# been created.  This is so that the image is as stable as possible to make
+# image creation reproducible.
+# NB: this also means there may be no security-related fixes there, need to
+# move the version to the next manually.
+#FROM i386/ubuntu:xenial
+#FROM i386/ubuntu:bionic
+FROM i386/ubuntu:focal
+
+RUN linux32 \
+    apt-get update && apt-get install -y --no-install-recommends apt-utils
+RUN export DEBIAN_FRONTEND=noninteractive \
+    export DEBCONF_NONINTERACTIVE_SEEN=true && \
+    echo 'tzdata tzdata/Areas select Etc' | debconf-set-selections; \
+    echo 'tzdata tzdata/Zones/Etc select UTC' | debconf-set-selections; \
+    linux32 \
+    apt-get -y install \
+        autoconf \
+        build-essential \
+        curl \
+        file \
+        git \
+        libx11-dev \
+        libxext-dev \
+        libxrender-dev \
+        libxrandr-dev \
+        libxtst-dev \
+        libxt-dev \
+        libcups2-dev \
+        libasound2-data \
+#        libpng12-0 \
+        libasound2 \
+        libfreetype6 \
+        libfontconfig1-dev \
+        libasound2-dev \
+        rsync \
+        unzip \
+        zip
+RUN linux32 \
+    apt-get -y install \
+        g++-10 \
+        gcc-10 && \
+    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10 && \
+    apt-get clean -qy && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN git config --global user.email "teamcity@jetbrains.com" && \
+    git config --global user.name "builduser"

jb/project/docker/mkdocker_aarch64.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+wget https://raw.githubusercontent.com/GNOME/gtk/refs/heads/main/gdk/wayland/protocol/gtk-shell.xml
+# This script creates a Docker image suitable for building AArch64 variant
+
+docker build --platform=linux/aarch64 -t jetbrains/runtime:oraclelinux8_aarch64 -f Dockerfile.oraclelinux .
+
+# NB: the resulting container can (and should) be used without the network
+# connection (--network none) during build in order to reduce the chance
+# of build contamination.

jb/project/docker/mkdocker_jbrtest.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+set -euo pipefail
+set -x
+
+machine=$(uname -m)
+
+echo "Building image for "$machine" arch"
+
+case "$machine" in
+  "aarch64" | "arm64v8" | "arm64")
+    arch=arm64
+    arch_from=arm64v8
+    ;;
+  "x86_64" | "amd64")
+    arch=amd64
+    arch_from=amd64
+    ;;
+esac
+
+
+# This script creates Docker images for testing JBR executables
+
+
+function build {
+  local arch=$1
+  local os_name=$2
+  local os_version=$3
+  local arch_from=${4:-$arch}
+
+  echo "Building image for ${os_name} ${os_version} ${arch}"
+  echo "====================================="
+
+  docker build -t jetbrains/runtime:jbrTest_${os_name}${os_version}-$arch \
+      --build-arg ARCH="$arch" \
+      --build-arg ARCH_FROM=$arch_from \
+      --build-arg OS_NAME=${os_name} \
+      --build-arg OS_VERSION="${os_version}" \
+    -f Dockerfile-jbrTest .
+
+  return 0
+}
+
+
+function downloadJBR {
+  JBR_REMOTE_FILE=jbr-11_0_16-linux-x86-b2043.64.tar.gz
+  JBR_SHA=d3e4d488bb8e0edf4fa0832a4ff5b5dcac69e646640ae06afb1b49e419536762
+  JBR_LOCAL_FILE=$JBR_REMOTE_FILE
+
+  if [ ! -f $JBR_LOCAL_FILE ]; then
+      # Obtain "JBR" from outside of the container.
+      curl -o $JBR_LOCAL_FILE https://cache-redirector.jetbrains.com/intellij-jbr/${JBR_REMOTE_FILE} -O
+  else
+      echo "Runtime \"$JBR_LOCAL_FILE\" present, skipping download"
+  fi
+
+  # Verify that what we've downloaded can be trusted.
+  sha256sum -c - <<EOF
+$JBR_SHA *$JBR_LOCAL_FILE
+EOF
+
+  return 0
+}
+
+build $arch "ubuntu" "20.04" ${arch_from}
+if [ "$arch" == "amd64" ]; then
+  downloadJBR
+  build "i386" "ubuntu" "20.04" $arch
+fi
+build $arch "ubuntu" "22.04" ${arch_from}

jb/project/docker/mkdocker_jbrtest_musl.sh

@@ -0,0 +1,76 @@
+#!/bin/bash
+
+set -euo pipefail
+set -x
+
+machine=$(uname -m)
+
+echo "Building image for "$machine" arch"
+
+case "$machine" in
+  "aarch64" | "arm64v8" | "arm64")
+    arch=arm64
+    arch_from=arm64v8
+    os_version_alpine="3.12"
+    ;;
+  "x86_64" | "amd64")
+    arch=amd64
+    arch_from=amd64
+    os_version_alpine="3.12"
+    ;;
+esac
+
+
+# This script creates Docker images for testing JBR executables
+
+
+function build {
+  local arch=$1
+  local os_name=$2
+  local os_version=$3
+  local arch_from=${4:-$arch}
+
+  echo "Building image for ${os_name} ${os_version} ${arch}"
+  echo "====================================="
+
+  docker build -t jetbrains/runtime:jbrTest_${os_name}${os_version}-$arch \
+      --build-arg ARCH="$arch" \
+      --build-arg ARCH_FROM=$arch_from \
+      --build-arg OS_NAME=${os_name} \
+      --build-arg OS_VERSION="${os_version}" \
+    -f Dockerfile-jbrTest.musl .
+
+  return 0
+}
+
+
+function downloadJBR {
+  JBR_REMOTE_FILE=$1
+  JBR_SHA=$2
+  JBR_LOCAL_FILE=jbrsdk_17.tar.gz
+
+  if [ ! -f $JBR_REMOTE_FILE ]; then
+      # Obtain "JBR" from outside of the container.
+      wget -nc https://cache-redirector.jetbrains.com/intellij-jbr/${JBR_REMOTE_FILE} -O $JBR_REMOTE_FILE
+  # Verify that what we've downloaded can be trusted.
+#  sha256sum -c - <<EOF
+#$JBR_SHA *$JBR_LOCAL_FILE
+#EOF
+      cp $JBR_REMOTE_FILE $JBR_LOCAL_FILE
+  else
+      echo "Runtime \"$JBR_LOCAL_FILE\" present, skipping download"
+  fi
+
+  return 0
+}
+
+if [ "$arch" == "amd64" ]; then
+  JBR_REMOTE_FILE=jbrsdk-17.0.10-linux-musl-x64-b1087.23.tar.gz
+  JBR_SHA=4424739563c8735e81972a651b6f6851b2c835c6a9d192385b3dc934eecfae86e0a6e853fcea9b2353e71a576c7ff029e5a6836c6d9b7cd98d1c23b42763fd3e
+else
+  JBR_REMOTE_FILE=jbrsdk-17.0.10-linux-musl-aarch64-b1087.23.tar.gz
+  JBR_SHA=936668fd2c7375fa7e728dcf7988eb36f4ea886b95782cd84cb129585c7bec5de5e94072b0c24817b1ec1873b058b6d30c09edf7d1789e031121a7737b687c4f
+fi
+downloadJBR $JBR_REMOTE_FILE $JBR_SHA
+
+build $arch "alpine" ${os_version_alpine} ${arch_from}

jb/project/docker/mkdocker_musl_aarch64.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+wget https://raw.githubusercontent.com/GNOME/gtk/refs/heads/main/gdk/wayland/protocol/gtk-shell.xml
+# This script creates a Docker image suitable for building musl AArch64 variant
+
+docker build --platform=linux/aarch64 -t jetbrains/runtime:alpine14_aarch64 -f Dockerfile.alpine .
+
+# NB: the resulting container can (and should) be used without the network
+# connection (--network none) during build in order to reduce the chance
+# of build contamination.

jb/project/docker/mkdocker_musl_x64.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+wget https://raw.githubusercontent.com/GNOME/gtk/refs/heads/main/gdk/wayland/protocol/gtk-shell.xml
+# This script creates a Docker image suitable for building musl x64 variant
+
+docker build --platform=linux/amd64 -t jetbrains/runtime:alpine14_x64 -f Dockerfile.alpine .
+
+# NB: the resulting container can (and should) be used without the network
+# connection (--network none) during build in order to reduce the chance
+# of build contamination.

jb/project/docker/mkdocker_x64.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+wget https://raw.githubusercontent.com/GNOME/gtk/refs/heads/main/gdk/wayland/protocol/gtk-shell.xml
+# This script creates a Docker image suitable for building x64 variant
+
+docker build --platform=linux/amd64 -t jetbrains/runtime:oraclelinux8_x64 -f Dockerfile.oraclelinux .
+
+# NB: the resulting container can (and should) be used without the network
+# connection (--network none) during build in order to reduce the chance
+# of build contamination.

jb/project/docker/mkdocker_x86.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+# This script creates a Docker image suitable for building x86 variant
+
+docker build --platform=linux/i386 -t jetbrains/runtime:ubuntu2004_x86 -f Dockerfile.ubuntu.x86 .
+
+# NB: the resulting container can (and should) be used without the network
+# connection (--network none) during build in order to reduce the chance
+# of build contamination.

jb/project/tools/mac/scripts/sign.sh

@@ -55,10 +55,8 @@ done
 
 log "Signing jmod files"
 JMODS_DIR="$APPLICATION_PATH/Contents/Home/jmods"
-JMOD_EXE="$BOOT_JDK/bin/jmod"
+JMOD_EXE="$APPLICATION_PATH/Contents/Home/bin/jmod"
 if [ -d "$JMODS_DIR" ]; then
-  log "processing jmods"  
-
   for jmod_file in "$JMODS_DIR"/*.jmod; do
     log "Processing $jmod_file"
 
@@ -66,16 +64,16 @@ if [ -d "$JMODS_DIR" ]; then
     rm -rf "$TMP_DIR"
     mkdir "$TMP_DIR"
 
-    log "Unzipping $jmod_file"
+    log "Unzipping $jmod_file"    
     $JMOD_EXE extract --dir "$TMP_DIR" "$jmod_file" >/dev/null
+    log "Removing $jmod_file"
+    rm -f "$jmod_file"
 
     log "Signing dylibs in $TMP_DIR"
     find "$TMP_DIR" \
       -type f \( -name "*.dylib" -o -name "*.so"-o -perm +111 -o -name jarsigner -o -name jnativescan -o -name jdeps -o -name jpackageapplauncher -o -name jspawnhelper -o -name jar -o -name javap -o -name jdeprscan -o -name jfr -o -name rmiregistry -o -name java -o -name jhsdb  -o -name jstatd  -o -name jstatd -o -name jpackage -o -name keytool -o -name jmod -o -name jlink -o -name jimage -o -name jstack -o -name jcmd -o -name jps -o -name jmap -o -name jstat -o -name jinfo -o -name jshell -o -name jwebserver -o -name javac -o -name serialver -o -name jrunscript -o -name jdb -o -name jconsole -o -name javadoc \) \
       -exec sh -c '"$1" --timestamp -v -s "$2" --options=runtime --force --entitlements "$3" "$4" || exit 1' sh "$SIGN_UTILITY" "$JB_DEVELOPER_CERT" "$SCRIPT_DIR/entitlements.xml" {} \;
 
-    log "Removing $jmod_file"
-    rm -f "$jmod_file"
     cmd="$JMOD_EXE create --class-path $TMP_DIR/classes"
 
     # Check each directory and add to the command if it exists
@@ -86,8 +84,6 @@ if [ -d "$JMODS_DIR" ]; then
     [ -d "$TMP_DIR/legal" ] && cmd="$cmd --legal-notices $TMP_DIR/legal"
     [ -d "$TMP_DIR/man" ] && cmd="$cmd --man-pages $TMP_DIR/man"
 
-    log "Creating jmod file"
-		log "$cmd"
     # Add the output file
     cmd="$cmd $jmod_file"
 
@@ -97,41 +93,6 @@ if [ -d "$JMODS_DIR" ]; then
     log "Removing $TMP_DIR"
     rm -rf "$TMP_DIR"
   done
-
-  log "Repack java.base.jmod with new hashes of modules"
-  hash_modules=$($JMOD_EXE describe $JMODS_DIR/java.base.jmod | grep hashes | awk '{print $2}' | tr '\n' '|' | sed s/\|$//) || exit $?
-
-  TMP_DIR="$JMODS_DIR/tmp"
-  rm -rf "$TMP_DIR"
-  mkdir "$TMP_DIR"
-
-  jmod_file="$JMODS_DIR/java.base.jmod"
-  log "Unzipping $jmod_file"
-  $JMOD_EXE extract --dir "$TMP_DIR" "$jmod_file" >/dev/null
-
-  log "Removing java.base.jmod"
-  rm -f "$jmod_file"
-
-  cmd="$JMOD_EXE create --class-path $TMP_DIR/classes --hash-modules \"$hash_modules\" --module-path $JMODS_DIR"
-
-  # Check each directory and add to the command if it exists
-  [ -d "$TMP_DIR/bin" ] && cmd="$cmd --cmds $TMP_DIR/bin"
-  [ -d "$TMP_DIR/conf" ] && cmd="$cmd --config $TMP_DIR/conf"
-  [ -d "$TMP_DIR/lib" ] && cmd="$cmd --libs $TMP_DIR/lib"
-  [ -d "$TMP_DIR/include" ] && cmd="$cmd --header-files $TMP_DIR/include"
-  [ -d "$TMP_DIR/legal" ] && cmd="$cmd --legal-notices $TMP_DIR/legal"
-  [ -d "$TMP_DIR/man" ] && cmd="$cmd --man-pages $TMP_DIR/man"
-
-  log "Creating jmod file"
-	log "$cmd"
-  # Add the output file
-  cmd="$cmd $jmod_file"
-
-  # Execute the command
-  eval $cmd
-
-  log "Removing $TMP_DIR"
-  rm -rf "$TMP_DIR"
 else
   echo "Directory '$JMODS_DIR' does not exist. Skipping signing of jmod files."
 fi

make/Bundles.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include MakeIO.gmk
@@ -42,6 +43,8 @@ ifeq ($(call isBuildOs, windows), true)
   TAR_IGNORE_EXIT_VALUE := || test "$$$$?" = "1"
 endif
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Bundles-pre.gmk))
 ################################################################################
 # BUNDLE : Name of bundle to create
 # FILES : Files in BASE_DIRS to add to bundle
@@ -499,6 +502,11 @@ endif
 
 ################################################################################
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Bundles.gmk))
+
+################################################################################
+
 product-bundles: $(PRODUCT_TARGETS)
 legacy-bundles: $(LEGACY_TARGETS)
 test-bundles: $(TEST_TARGETS)
@@ -509,10 +517,6 @@ static-libs-bundles: $(STATIC_LIBS_TARGETS)
 static-libs-graal-bundles: $(STATIC_LIBS_GRAAL_TARGETS)
 jcov-bundles: $(JCOV_TARGETS)
 
-.PHONY: product-bundles test-bundles \
+.PHONY: all default product-bundles test-bundles \
     docs-jdk-bundles docs-javase-bundles docs-reference-bundles \
     static-libs-bundles static-libs-graal-bundles jcov-bundles
-
-################################################################################
-
-include MakeFileEnd.gmk

make/CompileCommands.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 # When FIXPATH is set, let it process the file to make sure all paths are usable
 # by system native tools. The FIXPATH tool assumes arguments preceded by an @
@@ -49,6 +50,6 @@ $(OUTPUTDIR)/compile_commands.json: $(wildcard $(MAKESUPPORT_OUTPUTDIR)/compile-
 
 TARGETS += $(OUTPUTDIR)/compile_commands.json
 
-################################################################################
+all: $(TARGETS)
 
-include MakeFileEnd.gmk
+.PHONY: all

make/CompileDemos.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,17 +23,23 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
 ################################################################################
 # Build demos for the JDK into $(SUPPORT_OUTPUTDIR)/demos/image.
 ################################################################################
 
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
 include CopyFiles.gmk
 include JavaCompilation.gmk
 include TextFileProcessing.gmk
 include ZipArchive.gmk
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, CompileDemos-pre.gmk))
+
 # Prepare the find cache.
 DEMO_SRC_DIRS += $(TOPDIR)/src/demo
 
@@ -126,19 +132,12 @@ define SetupBuildDemoBody
         JARMAIN := $$($1_MAIN_CLASS), \
         MANIFEST := $(DEMO_MANIFEST), \
         EXTRA_MANIFEST_ATTR := $$($1_EXTRA_MANIFEST_ATTR), \
+        SRCZIP := $(SUPPORT_OUTPUTDIR)/demos/image/$$($1_DEMO_SUBDIR)/$1/src.zip, \
         EXCLUDE_FILES := $$($1_EXCLUDE_FILES), \
         DISABLED_WARNINGS := $$($1_DISABLED_WARNINGS), \
     ))
 
     $1 += $$(BUILD_DEMO_$1)
-
-    $$(eval $$(call SetupZipArchive, ZIP_SRC_DEMO_$1, \
-        SRC := $$($1_MAIN_SRC) $$($1_EXTRA_SRC_DIR), \
-        ZIP := $(SUPPORT_OUTPUTDIR)/demos/image/$$($1_DEMO_SUBDIR)/$1/src.zip, \
-        EXCLUDE_FILES := $$($1_EXCLUDE_FILES), \
-    ))
-
-    $1 += $$(ZIP_SRC_DEMO_$1)
   endif
 
   # Copy files. Sort is needed to remove duplicates.
@@ -258,8 +257,11 @@ ifneq ($(filter images, $(MAKECMDGOALS)), )
   IMAGES_TARGETS := $(COPY_TO_TEST_IMAGE)
 endif
 
+################################################################################
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, CompileDemos-post.gmk))
+
+all: $(TARGETS)
 images: $(IMAGES_TARGETS)
 
-################################################################################
-
-include MakeFileEnd.gmk
+.PHONY: all

make/CompileInterimLangtools.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,11 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+# This must be the first rule
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include JavaCompilation.gmk
@@ -146,4 +148,5 @@ TARGETS += $(BUILD_JAVAC_SERVER)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+
+all: $(TARGETS)

make/CompileJavaModules.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,13 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+# This must be the first rule
+default: all
 
-################################################################################
-
-include JavaCompilation.gmk
+include $(SPEC)
+include MakeBase.gmk
 include Modules.gmk
+include JavaCompilation.gmk
 
 ################################################################################
 # If this is an imported module that has prebuilt classes, only compile
@@ -85,15 +86,7 @@ CreateHkTargets = \
 ################################################################################
 # Include module specific build settings
 
-THIS_SNIPPET := modules/$(MODULE)/Java.gmk
-
-ifneq ($(wildcard $(THIS_SNIPPET)), )
-  include MakeSnippetStart.gmk
-
-  include $(THIS_SNIPPET)
-
-  include MakeSnippetEnd.gmk
-endif
+-include Java.gmk
 
 ################################################################################
 # Setup the main compilation
@@ -156,4 +149,6 @@ endif
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all

make/CompileModuleTools.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2013, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,14 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+include JavaCompilation.gmk
 
 ################################################################################
 
-include JavaCompilation.gmk
-
 TOOLS_CLASSES_DIR := $(BUILDTOOLS_OUTPUTDIR)/tools_jigsaw_classes
 
 # When using an external BUILDJDK, make it possible to shortcut building of
@@ -62,4 +64,4 @@ TARGETS += $(BUILD_JIGSAW_TOOLS)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)

make/CompileToolsHotspot.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,19 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+# This must be the first rule
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include JavaCompilation.gmk
 
+TARGETS :=
+
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, hotspot/CompileTools.gmk))
+
 ################################################################################
 # Build tools needed for the JFR source code generation
 
@@ -44,6 +51,7 @@ $(eval $(call SetupJavaCompilation, BUILD_TOOLS_HOTSPOT, \
 
 TARGETS += $(BUILD_TOOLS_HOTSPOT)
 
-################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all

make/CompileToolsJdk.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,14 +23,21 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include JavaCompilation.gmk
 include TextFileProcessing.gmk
 
+################################################################################
+
+$(eval $(call IncludeCustomExtension, CompileTools.gmk))
+
+################################################################################
+
 # Use += to be able to add to this from a custom extension
 BUILD_TOOLS_SRC_DIRS += \
     $(TOPDIR)/make/jdk/src/classes \
@@ -161,6 +168,4 @@ ifeq ($(ENABLE_PANDOC), true)
   TARGETS += $(PANDOC_HTML_MANPAGE_FILTER_SETUP)
 endif
 
-################################################################################
-
-include MakeFileEnd.gmk
+all: $(TARGETS)

make/CopyImportModules.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2015, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2015, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,13 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
 # This makefile is called for every imported module to copy the non class
 # contents into the exploded jdk image.
-################################################################################
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 
@@ -102,6 +103,4 @@ ifneq ($(CONF_DIR), )
   TARGETS += $(COPY_CONF)
 endif
 
-################################################################################
-
-include MakeFileEnd.gmk
+all: $(TARGETS)

make/CopyInterimTZDB.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,15 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 
+################################################################################
+
 ### TZDB tool needs files from java.time.zone package
 
 define tzdb_copyfiles
@@ -48,7 +51,3 @@ $(eval $(call SetupCopyFiles, COPY_INTERIM_TZDB, \
 ################################################################################
 
 all: $(COPY_INTERIM_TZDB)
-
-################################################################################
-
-include MakeFileEnd.gmk

make/Coverage.gmk

@@ -22,7 +22,8 @@
 # or visit www.oracle.com if you need additional information or have any
 # questions.
 
-include MakeFileStart.gmk
+include $(SPEC)
+include MakeBase.gmk
 
 ################################################################################
 
@@ -54,7 +55,3 @@ $(JCOV_IMAGE_DIR)/release: $(JCOV_INPUT_IMAGE_DIR)/release
 	$(RMDIR) $(JCOV_TEMP)
 
 jcov-image: $(JCOV_IMAGE_DIR)/release
-
-################################################################################
-
-include MakeFileEnd.gmk

make/CreateJmods.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include Execute.gmk
@@ -35,6 +36,8 @@ ifeq ($(MODULE), )
   $(error MODULE must be set when calling CreateJmods.gmk)
 endif
 
+$(eval $(call IncludeCustomExtension, CreateJmods.gmk))
+
 ################################################################################
 
 JMODS_DIR := $(IMAGES_OUTPUTDIR)/jmods
@@ -184,15 +187,7 @@ endif
 ################################################################################
 # Include module specific build settings
 
-THIS_SNIPPET := modules/$(MODULE)/Jmod.gmk
-
-ifneq ($(wildcard $(THIS_SNIPPET)), )
-  include MakeSnippetStart.gmk
-
-  include $(THIS_SNIPPET)
-
-  include MakeSnippetEnd.gmk
-endif
+-include Jmod.gmk
 
 # Set main class
 ifneq ($(JMOD_FLAGS_main_class), )
@@ -271,4 +266,6 @@ TARGETS += $(create_$(JMOD_FILE))
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+################################################################################

make/Docs.gmk

@@ -1,4 +1,4 @@
-# Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -22,7 +22,26 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
+include CopyFiles.gmk
+include Execute.gmk
+include Modules.gmk
+include ModuleTools.gmk
+include ProcessMarkdown.gmk
+include ToolsJdk.gmk
+include ZipArchive.gmk
+include TextFileProcessing.gmk
+
+# This is needed to properly setup DOCS_MODULES.
+$(eval $(call ReadImportMetaData))
+
+################################################################################
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Docs.gmk))
 
 ################################################################################
 # This file generates all documentation for OpenJDK.
@@ -35,19 +54,7 @@ include MakeFileStart.gmk
 #
 # We will also generate separate, free-standing specifications from either
 # markdown or existing html files.
-################################################################################
-
-include CopyFiles.gmk
-include Execute.gmk
-include Modules.gmk
-include ProcessMarkdown.gmk
-include TextFileProcessing.gmk
-include ZipArchive.gmk
-include $(TOPDIR)/make/ModuleTools.gmk
-include $(TOPDIR)/make/ToolsJdk.gmk
-
-# This is needed to properly setup DOCS_MODULES.
-$(eval $(call ReadImportMetaData))
+#
 
 ################################################################################
 # Javadoc settings
@@ -754,6 +761,10 @@ $(eval $(call SetupZipArchive, BUILD_JAVADOC_ZIP, \
 
 ZIP_TARGETS += $(BUILD_JAVADOC_ZIP)
 
+################################################################################
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Docs-post.gmk))
+
 ################################################################################
 # Bundles all generated specs into a zip archive, skipping javadocs.
 
@@ -795,11 +806,7 @@ all: docs-jdk-api-javadoc docs-jdk-api-graphs docs-javase-api-javadoc \
     docs-reference-api-graphs docs-jdk-specs docs-jdk-index docs-zip \
     docs-specs-zip
 
-.PHONY: docs-jdk-api-javadoc docs-jdk-api-graphs \
+.PHONY: default all docs-jdk-api-javadoc docs-jdk-api-graphs \
     docs-javase-api-javadoc docs-javase-api-graphs \
     docs-reference-api-javadoc docs-reference-api-graphs docs-jdk-specs \
     docs-jdk-index docs-zip docs-specs-zip
-
-################################################################################
-
-include MakeFileEnd.gmk

make/Doctor.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,11 +23,18 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Doctor.gmk))
 
 ################################################################################
+#
 # Help user diagnose possible errors and problems with the build environment.
-################################################################################
+#
 
 prologue:
 	$(ECHO)
@@ -138,8 +145,4 @@ doctor: $(TARGETS)
 
 all: doctor
 
-.PHONY: doctor $(TARGETS)
-
-################################################################################
-
-include MakeFileEnd.gmk
+.PHONY: default all doctor $(TARGETS)

make/ExplodedImageOptimize.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,15 +23,17 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
 # Runs a tool on the exploded image to improve performance
-################################################################################
 
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
 include Execute.gmk
 include $(TOPDIR)/make/ModuleTools.gmk
 
+################################################################################
+
 ALL_MODULEINFO_CLASSES := $(wildcard $(JDK_OUTPUTDIR)/modules/*/module-info.class)
 
 $(eval $(call SetupExecute, optimize_image, \
@@ -45,4 +47,6 @@ TARGETS := $(optimize_image_TARGET)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all default

make/GenerateLinkOptData.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,15 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
 ################################################################################
 # Generate classlist
 ################################################################################
 
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
 include CopyFiles.gmk
 include JavaCompilation.gmk
 
@@ -145,4 +148,4 @@ TARGETS += $(COPY_JLI_TRACE)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)

make/GenerateModuleSummary.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,11 +23,12 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+# Default target declared first
+default: all
 
-################################################################################
-
-include $(TOPDIR)/make/ModuleTools.gmk
+include $(SPEC)
+include MakeBase.gmk
+include ModuleTools.gmk
 
 GENGRAPHS_DIR := $(IMAGES_OUTPUTDIR)/gengraphs
 SPEC_DOTFILES_DIR := $(GENGRAPHS_DIR)/spec-dotfiles
@@ -49,7 +50,3 @@ $(GENGRAPHS_DIR)/module-summary.html: $(BUILD_JIGSAW_TOOLS) $(GENGRAPHS_DIR)/tec
 	$(TOOL_MODULESUMMARY) -o $@ --module-path $(IMAGES_OUTPUTDIR)/jmods
 
 all: $(GENGRAPHS_DIR)/jdk.dot $(GENGRAPHS_DIR)/module-summary.html $(SPEC_DOTFILES_DIR)/java.se.dot
-
-################################################################################
-
-include MakeFileEnd.gmk

make/Global.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -108,7 +108,6 @@ help:
 	$(info $(_) MICRO="OPT1=x;OPT2=y"  # Control the MICRO test harness, use 'make test-only MICRO=help' to list)
 	$(info $(_) TEST_OPTS="OPT1=x;..." # Generic control of all test harnesses)
 	$(info $(_) TEST_VM_OPTS="ARG ..." # Same as setting TEST_OPTS to VM_OPTIONS="ARG ...")
-	$(info $(_) ALLOW="FOO,BAR"        # Do not warn that FOO and BAR are non-control variables)
 	$(info )
 	$(if $(all_confs), $(info Available configurations in $(build_dir):) $(foreach var,$(all_confs),$(info * $(var))), \
 	    $(info No configurations were found in $(build_dir).) $(info Run 'bash configure' to create a configuration.))
@@ -121,12 +120,12 @@ print-configurations:
 	@true
 
 test-prebuilt:
-	@( cd $(TOPDIR) && \
+	@( cd $(topdir) && \
 	    $(MAKE) --no-print-directory -r -R -I make/common/ -f make/RunTestsPrebuilt.gmk \
 	    test-prebuilt CUSTOM_MAKE_DIR=$(CUSTOM_MAKE_DIR) TEST="$(TEST)" )
 
 test-prebuilt-with-exit-code:
-	@( cd $(TOPDIR) && \
+	@( cd $(topdir) && \
 	    $(MAKE) --no-print-directory -r -R -I make/common/ -f make/RunTestsPrebuilt.gmk \
 	    test-prebuilt-with-exit-code CUSTOM_MAKE_DIR=$(CUSTOM_MAKE_DIR) TEST="$(TEST)" )
 

make/GraalBuilderImage.gmk

@@ -23,15 +23,20 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
 # This makefile creates a jdk image overlaid with statically linked core
 # libraries.
-################################################################################
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 
+################################################################################
+
+TARGETS :=
+
 $(eval $(call SetupCopyFiles, COPY_JDK_IMG, \
       SRC := $(JDK_IMAGE_DIR)/, \
       DEST := $(GRAAL_BUILDER_IMAGE_DIR)/, \
@@ -49,4 +54,6 @@ TARGETS += $(COPY_STATIC_LIBS)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all

make/Hsdis.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,14 +23,17 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+include JdkNativeCompilation.gmk
 
 ################################################################################
 # This makefile compiles and installs the hsdis library
+#
 ################################################################################
 
-include JdkNativeCompilation.gmk
-
 HSDIS_OUTPUT_DIR := $(SUPPORT_OUTPUTDIR)/hsdis
 REAL_HSDIS_NAME := hsdis-$(OPENJDK_TARGET_CPU_LEGACY_LIB)$(SHARED_LIBRARY_SUFFIX)
 BUILT_HSDIS_LIB := $(HSDIS_OUTPUT_DIR)/$(REAL_HSDIS_NAME)
@@ -198,8 +201,8 @@ endif
 
 TARGETS += install
 
-.PHONY: build install
-
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all default build install

make/Images.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include DebugInfoUtils.gmk
@@ -36,6 +37,9 @@ include Utils.gmk
 JDK_TARGETS :=
 JRE_TARGETS :=
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Images-pre.gmk))
+
 ################################################################################
 
 # All modules for the current target platform.
@@ -305,6 +309,12 @@ $(call SetupCopyDebuginfo,SYMBOLS)
 
 ################################################################################
 
+# Include custom post hook here to make it possible to augment the target lists
+# before actual target prerequisites are declared.
+$(eval $(call IncludeCustomExtension, Images-post.gmk))
+
+################################################################################
+
 $(JRE_TARGETS): $(JLINK_JRE_TARGETS)
 $(JDK_TARGETS): $(JLINK_JDK_TARGETS)
 
@@ -314,8 +324,4 @@ symbols: $(SYMBOLS_TARGETS)
 
 all: jdk jre symbols
 
-.PHONY: jdk jre symbols
-
-################################################################################
-
-include MakeFileEnd.gmk
+.PHONY: default all jdk jre symbols

make/Init.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,78 +23,263 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
 ################################################################################
-# Init.gmk sits between PreInit.gmk and Main.gmk when bootstrapping the build.
-# It is called from PreInit.gmk, and its main responsibility is to launch
-# Main.gmk with the proper make and the proper make arguments.
-# PreMain.gmk has provided us with a proper SPEC. This allows us to use the
-# value of $(MAKE) for all further make calls.
+# This is the bootstrapping part of the build. This file is included from the
+# top level Makefile, and is responsible for launching the Main.gmk file with
+# the proper make and the proper make arguments.
 ################################################################################
 
-# Our helper functions.
-include $(TOPDIR)/make/InitSupport.gmk
-include LogUtils.gmk
+# This must be the first rule
+default:
+.PHONY: default
 
 # Inclusion of this pseudo-target will cause make to execute this file
 # serially, regardless of -j.
 .NOTPARALLEL:
 
-# Parse COMPARE_BUILD (for makefile development)
-$(eval $(call ParseCompareBuild))
+ifeq ($(HAS_SPEC), )
+  ##############################################################################
+  # This is the default mode. We have not been recursively called with a SPEC.
+  ##############################################################################
 
-# Setup reproducible build environment
-$(eval $(call SetupReproducibleBuild))
+  # Include our helper functions.
+  include $(topdir)/make/InitSupport.gmk
 
-# If no LOG= was given on command line, but we have a non-standard default
-# value, use that instead and re-parse log level.
-ifeq ($(LOG), )
-  ifneq ($(DEFAULT_LOG), )
-    override LOG := $(DEFAULT_LOG)
-    $(eval $(call ParseLogLevel))
+  # Here are "global" targets, i.e. targets that can be executed without having
+  # a configuration. This will define ALL_GLOBAL_TARGETS.
+  include $(topdir)/make/Global.gmk
+
+  # Targets provided by Init.gmk.
+  ALL_INIT_TARGETS := print-modules print-targets print-configuration \
+      print-tests reconfigure pre-compare-build post-compare-build
+
+  # CALLED_TARGETS is the list of targets that the user provided,
+  # or "default" if unspecified.
+  CALLED_TARGETS := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), default)
+
+  # Extract non-global targets that require a spec file.
+  CALLED_SPEC_TARGETS := $(filter-out $(ALL_GLOBAL_TARGETS), $(CALLED_TARGETS))
+
+  # If we have only global targets, or if we are called with -qp (assuming an
+  # external part, e.g. bash completion, is trying to understand our targets),
+  # we will skip SPEC location and the sanity checks.
+  ifeq ($(CALLED_SPEC_TARGETS), )
+    ONLY_GLOBAL_TARGETS := true
+  endif
+  ifeq ($(findstring p, $(MAKEFLAGS))$(findstring q, $(MAKEFLAGS)), pq)
+    ONLY_GLOBAL_TARGETS := true
   endif
-endif
 
-ifeq ($(LOG_NOFILE), true)
-  # Disable build log if LOG=[level,]nofile was given
-  override BUILD_LOG_PIPE :=
-  override BUILD_LOG_PIPE_SIMPLE :=
-endif
+  ifeq ($(ONLY_GLOBAL_TARGETS), true)
+    ############################################################################
+    # We have only global targets, or are called with -pq.
+    ############################################################################
 
-ifeq ($(filter dist-clean, $(SEQUENTIAL_TARGETS)), dist-clean)
-  # We can't have a log file if we're about to remove it.
-  override BUILD_LOG_PIPE :=
-  override BUILD_LOG_PIPE_SIMPLE :=
-endif
+    ifeq ($(wildcard $(SPEC)), )
+      # If we have no SPEC provided, we will just make a "best effort" target list.
+      # First try to grab any available pre-existing main-targets.gmk.
+      main_targets_file := $(firstword $(wildcard $(build_dir)/*/make-support/main-targets.gmk))
+      ifneq ($(main_targets_file), )
+        # Extract the SPEC that corresponds to this main-targets.gmk file.
+        SPEC := $(patsubst %/make-support/main-targets.gmk, %/spec.gmk, $(main_targets_file))
+      else
+        # None found, pick an arbitrary SPEC for which to generate a file
+        SPEC := $(firstword $(all_spec_files))
+      endif
+    endif
 
-ifeq ($(OUTPUT_SYNC_SUPPORTED), true)
-  OUTPUT_SYNC_FLAG := -O$(OUTPUT_SYNC)
-endif
+    ifneq ($(wildcard $(SPEC)), )
+      $(eval $(call DefineMainTargets, LAZY, $(SPEC)))
+    else
+      # If we have no configurations we can not provide any main targets.
+      ALL_MAIN_TARGETS :=
+    endif
 
-##############################################################################
-# Init targets. These are handled fully, here and now.
-##############################################################################
+    ALL_TARGETS := $(sort $(ALL_GLOBAL_TARGETS) $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS))
 
-print-modules:
+    # Just list all our targets.
+    $(ALL_TARGETS):
+
+    .PHONY: $(ALL_TARGETS)
+
+  else
+    ############################################################################
+    # This is the normal case, we have been called from the command line by the
+    # user and we need to call ourself back with a proper SPEC.
+    # We have at least one non-global target, so we need to find a spec file.
+    ############################################################################
+
+    # Basic checks on environment and command line.
+    $(eval $(call CheckControlVariables))
+    $(eval $(call CheckDeprecatedEnvironment))
+    $(eval $(call CheckInvalidMakeFlags))
+
+    # Check that CONF_CHECK is valid.
+    $(eval $(call ParseConfCheckOption))
+
+    # Check that the LOG given is valid, and set LOG_LEVEL, LOG_NOFILE, MAKE_LOG_VARS and MAKE_LOG_FLAGS.
+    $(eval $(call ParseLogLevel))
+
+    # After this SPECS contain 1..N spec files (otherwise ParseConfAndSpec fails).
+    $(eval $(call ParseConfAndSpec))
+
+    # Extract main targets from Main.gmk using the spec(s) provided. In theory,
+    # with multiple specs, we should find the intersection of targets provided
+    # by all specs, but we approximate this by an arbitrary spec from the list.
+    # This will setup ALL_MAIN_TARGETS.
+    $(eval $(call DefineMainTargets, FORCE, $(firstword $(SPECS))))
+
+    # Separate called targets depending on type.
+    INIT_TARGETS := $(filter $(ALL_INIT_TARGETS), $(CALLED_SPEC_TARGETS))
+    MAIN_TARGETS := $(filter $(ALL_MAIN_TARGETS), $(CALLED_SPEC_TARGETS))
+    SEQUENTIAL_TARGETS := $(filter dist-clean clean%, $(MAIN_TARGETS))
+    PARALLEL_TARGETS := $(filter-out $(SEQUENTIAL_TARGETS), $(MAIN_TARGETS))
+
+    # The spec files depend on the autoconf source code. This check makes sure
+    # the configuration is up to date after changes to configure.
+    $(SPECS): $(wildcard $(topdir)/make/autoconf/*) \
+            $(if $(CUSTOM_CONFIG_DIR), $(wildcard $(CUSTOM_CONFIG_DIR)/*)) \
+            $(addprefix $(topdir)/make/conf/, version-numbers.conf branding.conf) \
+            $(if $(CUSTOM_CONF_DIR), $(wildcard $(addprefix $(CUSTOM_CONF_DIR)/, \
+                version-numbers.conf branding.conf)))
+        ifeq ($(CONF_CHECK), fail)
+	  @echo Error: The configuration is not up to date for \
+	      "'$(lastword $(subst /, , $(dir $@)))'."
+	  $(call PrintConfCheckFailed)
+	  @exit 2
+        else ifeq ($(CONF_CHECK), auto)
+	  @echo Note: The configuration is not up to date for \
+	      "'$(lastword $(subst /, , $(dir $@)))'."
+	  @( cd $(topdir) && \
+	      $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -f $(topdir)/make/Init.gmk \
+	      SPEC=$@ HAS_SPEC=true ACTUAL_TOPDIR=$(topdir) \
+	      reconfigure )
+        else ifeq ($(CONF_CHECK), ignore)
+          # Do nothing
+        endif
+
+    # Do not let make delete spec files even if aborted while doing a reconfigure
+    .PRECIOUS: $(SPECS)
+
+    # Unless reconfigure is explicitly called, let all main targets depend on
+    # the spec files to be up to date.
+    ifeq ($(findstring reconfigure, $(INIT_TARGETS)), )
+      $(MAIN_TARGETS): $(SPECS)
+    endif
+
+    make-info:
+        ifneq ($(findstring $(LOG_LEVEL), info debug trace), )
+	  $(info Running make as '$(strip $(MAKE) $(MFLAGS) \
+	      $(COMMAND_LINE_VARIABLES) $(MAKECMDGOALS))')
+        endif
+
+    MAKE_INIT_WITH_SPEC_ARGUMENTS := ACTUAL_TOPDIR=$(topdir) \
+        USER_MAKE_VARS="$(USER_MAKE_VARS)" MAKE_LOG_FLAGS=$(MAKE_LOG_FLAGS) \
+        $(MAKE_LOG_VARS) \
+        INIT_TARGETS="$(INIT_TARGETS)" \
+        SEQUENTIAL_TARGETS="$(SEQUENTIAL_TARGETS)" \
+        PARALLEL_TARGETS="$(PARALLEL_TARGETS)"
+
+    # Now the init and main targets will be called, once for each SPEC. The
+    # recipe will be run once for every target specified, but we only want to
+    # execute the recipe a single time, hence the TARGET_DONE with a dummy
+    # command if true.
+    # The COMPARE_BUILD part implements special support for makefile development.
+    $(ALL_INIT_TARGETS) $(ALL_MAIN_TARGETS): make-info
+	@$(if $(TARGET_DONE), \
+	  true \
+	, \
+	  ( cd $(topdir) && \
+	  $(foreach spec, $(SPECS), \
+	    $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -j 1 -f $(topdir)/make/Init.gmk \
+	        SPEC=$(spec) HAS_SPEC=true $(MAKE_INIT_WITH_SPEC_ARGUMENTS) \
+	        main && \
+	    $(if $(and $(COMPARE_BUILD), $(PARALLEL_TARGETS)), \
+	        $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -f $(topdir)/make/Init.gmk \
+	            SPEC=$(spec) HAS_SPEC=true ACTUAL_TOPDIR=$(topdir) \
+	            COMPARE_BUILD="$(COMPARE_BUILD)" pre-compare-build && \
+	        $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -j 1 -f $(topdir)/make/Init.gmk \
+	            SPEC=$(spec) HAS_SPEC=true $(MAKE_INIT_WITH_SPEC_ARGUMENTS) \
+	            COMPARE_BUILD="$(COMPARE_BUILD):NODRYRUN=true" main && \
+	        $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -f $(topdir)/make/Init.gmk \
+	            SPEC=$(spec) HAS_SPEC=true ACTUAL_TOPDIR=$(topdir) \
+	            COMPARE_BUILD="$(COMPARE_BUILD):NODRYRUN=true" post-compare-build && \
+	    ) \
+	  ) true ) \
+	  $(eval TARGET_DONE=true) \
+	)
+
+    .PHONY: $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS)
+
+  endif # $(ONLY_GLOBAL_TARGETS)!=true
+
+else # HAS_SPEC=true
+
+  ##############################################################################
+  # Now we have a spec. This part provides the "main" target that acts as a
+  # trampoline to call the Main.gmk with the value of $(MAKE) found in the spec
+  # file.
+  ##############################################################################
+
+  include $(SPEC)
+
+  # Our helper functions.
+  include $(TOPDIR)/make/InitSupport.gmk
+
+  # Parse COMPARE_BUILD (for makefile development)
+  $(eval $(call ParseCompareBuild))
+
+  # Setup reproducible build environment
+  $(eval $(call SetupReproducibleBuild))
+
+  # If no LOG= was given on command line, but we have a non-standard default
+  # value, use that instead and re-parse log level.
+  ifeq ($(LOG), )
+    ifneq ($(DEFAULT_LOG), )
+      override LOG := $(DEFAULT_LOG)
+      $(eval $(call ParseLogLevel))
+    endif
+  endif
+
+  ifeq ($(LOG_NOFILE), true)
+    # Disable build log if LOG=[level,]nofile was given
+    override BUILD_LOG_PIPE :=
+    override BUILD_LOG_PIPE_SIMPLE :=
+  endif
+
+  ifeq ($(filter dist-clean, $(SEQUENTIAL_TARGETS)), dist-clean)
+    # We can't have a log file if we're about to remove it.
+    override BUILD_LOG_PIPE :=
+    override BUILD_LOG_PIPE_SIMPLE :=
+  endif
+
+  ifeq ($(OUTPUT_SYNC_SUPPORTED), true)
+    OUTPUT_SYNC_FLAG := -O$(OUTPUT_SYNC)
+  endif
+
+  ##############################################################################
+  # Init targets
+  ##############################################################################
+
+  print-modules:
 	( cd $(TOPDIR) && \
 	    $(MAKE) $(MAKE_ARGS) -j 1 -f make/Main.gmk $(USER_MAKE_VARS) \
 	    NO_RECIPES=true print-modules )
 
-print-targets:
+  print-targets:
 	( cd $(TOPDIR) && \
 	    $(MAKE) $(MAKE_ARGS) -j 1 -f make/Main.gmk $(USER_MAKE_VARS) \
 	    NO_RECIPES=true print-targets )
 
-print-tests:
+  print-tests:
 	( cd $(TOPDIR) && \
 	    $(MAKE) $(MAKE_ARGS) -j 1 -f make/Main.gmk $(USER_MAKE_VARS) \
 	    NO_RECIPES=true print-tests )
 
-print-configuration:
-	$(ECHO) $(CONFIGURE_COMMAND_LINE)
+  print-configuration:
+	  $(ECHO) $(CONFIGURE_COMMAND_LINE)
 
-reconfigure:
+  reconfigure:
         ifneq ($(REAL_CONFIGURE_COMMAND_EXEC_FULL), )
 	  $(ECHO) "Re-running configure using original command line '$(REAL_CONFIGURE_COMMAND_EXEC_SHORT) $(REAL_CONFIGURE_COMMAND_LINE)'"
 	  $(eval RECONFIGURE_COMMAND := $(REAL_CONFIGURE_COMMAND_EXEC_FULL) $(REAL_CONFIGURE_COMMAND_LINE))
@@ -110,27 +295,25 @@ reconfigure:
 	    CUSTOM_CONFIG_DIR="$(CUSTOM_CONFIG_DIR)" \
 	    $(RECONFIGURE_COMMAND) )
 
-.PHONY: print-modules print-targets print-tests print-configuration reconfigure
+  ##############################################################################
+  # The main target, for delegating into Main.gmk
+  ##############################################################################
 
-##############################################################################
-# The main target. This will delegate all other targets into Main.gmk.
-##############################################################################
+  MAIN_TARGETS := $(SEQUENTIAL_TARGETS) $(PARALLEL_TARGETS) $(COMPARE_BUILD_MAKE)
+  # If building the default target, add what they are to the description.
+  DESCRIPTION_TARGETS := $(strip $(MAIN_TARGETS))
+  ifeq ($(DESCRIPTION_TARGETS), default)
+    DESCRIPTION_TARGETS += ($(DEFAULT_MAKE_TARGET))
+  endif
+  TARGET_DESCRIPTION := target$(if $(word 2, $(MAIN_TARGETS)),s) \
+      '$(strip $(DESCRIPTION_TARGETS))' in configuration '$(CONF_NAME)'
 
-MAIN_TARGETS := $(SEQUENTIAL_TARGETS) $(PARALLEL_TARGETS) $(COMPARE_BUILD_MAKE)
-# If building the default target, add what they are to the description.
-DESCRIPTION_TARGETS := $(strip $(MAIN_TARGETS))
-ifeq ($(DESCRIPTION_TARGETS), default)
-  DESCRIPTION_TARGETS += ($(DEFAULT_MAKE_TARGET))
-endif
-TARGET_DESCRIPTION := target$(if $(word 2, $(MAIN_TARGETS)),s) \
-    '$(strip $(DESCRIPTION_TARGETS))' in configuration '$(CONF_NAME)'
+  # MAKEOVERRIDES is automatically set and propagated by Make to sub-Make calls.
+  # We need to clear it of the init-specific variables. The user-specified
+  # variables are explicitly propagated using $(USER_MAKE_VARS).
+  main: MAKEOVERRIDES :=
 
-# MAKEOVERRIDES is automatically set and propagated by Make to sub-Make calls.
-# We need to clear it of the init-specific variables. The user-specified
-# variables are explicitly propagated using $(USER_MAKE_VARS).
-main: MAKEOVERRIDES :=
-
-main: $(INIT_TARGETS)
+  main: $(INIT_TARGETS)
         ifneq ($(SEQUENTIAL_TARGETS)$(PARALLEL_TARGETS), )
 	  $(call RotateLogFiles)
 	  $(PRINTF) "Building $(TARGET_DESCRIPTION)\n" $(BUILD_LOG_PIPE_SIMPLE)
@@ -150,14 +333,14 @@ main: $(INIT_TARGETS)
             # treat it as NOT using jobs at all.
 	    ( cd $(TOPDIR) && \
 	        $(NICE) $(MAKE) $(MAKE_ARGS) $(OUTPUT_SYNC_FLAG) \
-	            $(if $(JOBS), -j $(JOBS)) \
+                    $(if $(JOBS), -j $(JOBS)) \
 	            -f make/Main.gmk $(USER_MAKE_VARS) \
 	            $(PARALLEL_TARGETS) $(COMPARE_BUILD_MAKE) $(BUILD_LOG_PIPE) || \
 	        ( exitcode=$$? && \
 	        $(PRINTF) "\nERROR: Build failed for $(TARGET_DESCRIPTION) (exit code $$exitcode) \n" \
 	            $(BUILD_LOG_PIPE_SIMPLE) && \
 	        cd $(TOPDIR) && $(MAKE) $(MAKE_ARGS) -j 1 -f make/Init.gmk \
-	            on-failure ; \
+	            HAS_SPEC=true on-failure ; \
 	        exit $$exitcode ) )
 	    $(call CleanupJavacServer)
 	    $(call StopGlobalTimer)
@@ -170,7 +353,7 @@ main: $(INIT_TARGETS)
 	  $(call ReportProfileTimes)
         endif
 
-on-failure:
+    on-failure:
 	$(call CleanupJavacServer)
 	$(call StopGlobalTimer)
 	$(call ReportBuildTimes)
@@ -182,18 +365,15 @@ on-failure:
 	  $(call CleanupCompareBuild)
         endif
 
-# Support targets for COMPARE_BUILD, used for makefile development
-pre-compare-build:
+    # Support targets for COMPARE_BUILD, used for makefile development
+    pre-compare-build:
 	$(call WaitForJavacServerFinish)
 	$(call PrepareCompareBuild)
 
-post-compare-build:
+    post-compare-build:
 	$(call WaitForJavacServerFinish)
 	$(call CleanupCompareBuild)
 	$(call CompareBuildDoComparison)
 
-.PHONY: main on-failure pre-compare-build post-compare-build
-
-################################################################################
-
-include MakeFileEnd.gmk
+  .PHONY: print-targets print-modules reconfigure main on-failure
+endif

make/InitSupport.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,114 +23,396 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
 ################################################################################
 # This file contains helper functions for Init.gmk.
+# It is divided in two parts, depending on if a SPEC is present or not
+# (HAS_SPEC is true or not).
 ################################################################################
 
-# Define basic logging setup
-BUILD_LOG := $(OUTPUTDIR)/build.log
-BUILD_PROFILE_LOG := $(OUTPUTDIR)/build-profile.log
+ifndef _INITSUPPORT_GMK
+_INITSUPPORT_GMK := 1
 
-BUILD_LOG_PIPE := > >($(TEE) -a $(BUILD_LOG)) 2> >($(TEE) -a $(BUILD_LOG) >&2) && wait
-# Use this for simple echo/printf commands that are never expected to print
-# to stderr.
-BUILD_LOG_PIPE_SIMPLE := | $(TEE) -a $(BUILD_LOG)
+ifeq ($(HAS_SPEC), )
 
-# Setup the build environment to match the requested specification on
-# level of reproducible builds
-define SetupReproducibleBuild
-  ifeq ($$(SOURCE_DATE), updated)
-    # For static values of SOURCE_DATE (not "updated"), these are set in spec.gmk
-    export SOURCE_DATE_EPOCH := $$(shell $$(DATE) +"%s")
-    export SOURCE_DATE_ISO_8601 := $$(call EpochToISO8601, $$(SOURCE_DATE_EPOCH))
+  # COMMA is defined in spec.gmk, but that is not included yet
+  COMMA := ,
+
+  # Include the corresponding closed file, if present.
+  ifneq ($(CUSTOM_MAKE_DIR), )
+    -include $(CUSTOM_MAKE_DIR)/InitSupport.gmk
   endif
-endef
 
-# Parse COMPARE_BUILD into COMPARE_BUILD_*
-# Syntax: COMPARE_BUILD=CONF=<configure options>:PATCH=<patch file>:
-#         MAKE=<make targets>:COMP_OPTS=<compare script options>:
-#         COMP_DIR=<compare script base dir>|<default>:
-#         FAIL=<bool>
-# If neither CONF or PATCH is given, assume <default> means CONF if it
-# begins with "--", otherwise assume it means PATCH.
-# MAKE and COMP_OPTS can only be used with CONF and/or PATCH specified.
-# If any value contains "+", it will be replaced by space.
-# FAIL can be set to false to have the return value of compare be ignored.
-define ParseCompareBuild
-  ifneq ($$(COMPARE_BUILD), )
-    COMPARE_BUILD_OUTPUTDIR := $(WORKSPACE_ROOT)/build/compare-build/$(CONF_NAME)
-    COMPARE_BUILD_FAIL := true
+  ##############################################################################
+  # Helper functions for the initial part of Init.gmk, before the spec file is
+  # loaded. Most of these functions provide parsing and setting up make options
+  # from the command-line.
+  ##############################################################################
 
-    ifneq ($$(findstring :, $$(COMPARE_BUILD)), )
-      $$(foreach part, $$(subst :, , $$(COMPARE_BUILD)), \
-        $$(if $$(filter PATCH=%, $$(part)), \
-          $$(eval COMPARE_BUILD_PATCH = $$(strip $$(patsubst PATCH=%, %, $$(part)))) \
-        ) \
-        $$(if $$(filter CONF=%, $$(part)), \
-          $$(eval COMPARE_BUILD_CONF = $$(strip $$(subst +, , $$(patsubst CONF=%, %, $$(part))))) \
-        ) \
-        $$(if $$(filter MAKE=%, $$(part)), \
-          $$(eval COMPARE_BUILD_MAKE = $$(strip $$(subst +, , $$(patsubst MAKE=%, %, $$(part))))) \
-        ) \
-        $$(if $$(filter COMP_OPTS=%, $$(part)), \
-          $$(eval COMPARE_BUILD_COMP_OPTS = $$(strip $$(subst +, , $$(patsubst COMP_OPTS=%, %, $$(part))))) \
-        ) \
-        $$(if $$(filter COMP_DIR=%, $$(part)), \
-          $$(eval COMPARE_BUILD_COMP_DIR = $$(strip $$(subst +, , $$(patsubst COMP_DIR=%, %, $$(part))))) \
-        ) \
-        $$(if $$(filter FAIL=%, $$(part)), \
-          $$(eval COMPARE_BUILD_FAIL = $$(strip $$(subst +, , $$(patsubst FAIL=%, %, $$(part))))) \
-        ) \
-        $$(if $$(filter NODRYRUN=%, $$(part)), \
-          $$(eval COMPARE_BUILD_NODRYRUN = $$(strip $$(subst +, , $$(patsubst NODRYRUN=%, %, $$(part))))) \
-        ) \
-      )
-    else
-      # Separate handling for single field case, to allow for spaces in values.
-      ifneq ($$(filter PATCH=%, $$(COMPARE_BUILD)), )
-        COMPARE_BUILD_PATCH = $$(strip $$(patsubst PATCH=%, %, $$(COMPARE_BUILD)))
-      else ifneq ($$(filter CONF=%, $$(COMPARE_BUILD)), )
-        COMPARE_BUILD_CONF = $$(strip $$(subst +, , $$(patsubst CONF=%, %, $$(COMPARE_BUILD))))
-      else ifneq ($$(filter --%, $$(COMPARE_BUILD)), )
-        # Assume CONF if value begins with --
-        COMPARE_BUILD_CONF = $$(strip $$(subst +, , $$(COMPARE_BUILD)))
+  # Make control variables, handled by Init.gmk
+  INIT_CONTROL_VARIABLES += LOG CONF CONF_NAME SPEC JOBS TEST_JOBS CONF_CHECK \
+      COMPARE_BUILD JTREG GTEST MICRO TEST_OPTS TEST_VM_OPTS TEST_DEPS
+
+  # All known make control variables
+  MAKE_CONTROL_VARIABLES := $(INIT_CONTROL_VARIABLES) TEST JDK_FILTER SPEC_FILTER
+
+  # Define a simple reverse function.
+  # Should maybe move to MakeBase.gmk, but we can't include that file now.
+  reverse = \
+      $(if $(strip $(1)), $(call reverse, $(wordlist 2, $(words $(1)), $(1)))) \
+          $(firstword $(1))
+
+  # The variable MAKEOVERRIDES contains variable assignments from the command
+  # line, but in reverse order to what the user entered.
+  # The '§' <=> '\ 'dance is needed to keep values with space in them connected.
+  COMMAND_LINE_VARIABLES := $(subst §,\ , $(call reverse, $(subst \ ,§,$(MAKEOVERRIDES))))
+
+  # A list like FOO="val1" BAR="val2" containing all user-supplied make
+  # variables that we should propagate.
+  # The '§' <=> '\ 'dance is needed to keep values with space in them connected.
+  USER_MAKE_VARS := $(subst §,\ , $(filter-out $(addsuffix =%, $(INIT_CONTROL_VARIABLES)), \
+      $(subst \ ,§,$(MAKEOVERRIDES))))
+
+  # Setup information about available configurations, if any.
+  ifneq ($(CUSTOM_ROOT), )
+    build_dir = $(CUSTOM_ROOT)/build
+  else
+    build_dir = $(topdir)/build
+  endif
+  all_spec_files = $(wildcard $(build_dir)/*/spec.gmk)
+  # Extract the configuration names from the path
+  all_confs = $(patsubst %/spec.gmk, %, $(patsubst $(build_dir)/%, %, $(all_spec_files)))
+
+  # Check for unknown command-line variables
+  define CheckControlVariables
+    command_line_variables := $$(strip $$(foreach var, \
+        $$(subst \ ,_,$$(MAKEOVERRIDES)), \
+        $$(firstword $$(subst =, , $$(var)))))
+    unknown_command_line_variables := $$(strip \
+        $$(filter-out $$(MAKE_CONTROL_VARIABLES), $$(command_line_variables)))
+    ifneq ($$(unknown_command_line_variables), )
+      $$(info Note: Command line contains non-control variables:)
+      $$(foreach var, $$(unknown_command_line_variables), $$(info * $$(var)=$$($$(var))))
+      $$(info Make sure it is not mistyped, and that you intend to override this variable.)
+      $$(info 'make help' will list known control variables.)
+      $$(info )
+    endif
+  endef
+
+  # Check for deprecated ALT_ variables
+  define CheckDeprecatedEnvironment
+    defined_alt_variables := $$(filter ALT_%, $$(.VARIABLES))
+    ifneq ($$(defined_alt_variables), )
+      $$(info Warning: You have the following ALT_ variables set:)
+      $$(foreach var, $$(defined_alt_variables), $$(info * $$(var)=$$($$(var))))
+      $$(info ALT_ variables are deprecated, and may result in a failed build.)
+      $$(info Please clean your environment.)
+      $$(info )
+    endif
+  endef
+
+  # Check for invalid make flags like -j
+  define CheckInvalidMakeFlags
+    # This is a trick to get this rule to execute before any other rules
+    # MAKEFLAGS only indicate -j if read in a recipe (!)
+    $$(topdir)/make/Init.gmk: .FORCE
+	$$(if $$(findstring --jobserver, $$(MAKEFLAGS)), \
+	    $$(info Error: 'make -jN' is not supported, use 'make JOBS=N') \
+	    $$(error Cannot continue) \
+	)
+    .FORCE:
+    .PHONY: .FORCE
+  endef
+
+  # Check that the CONF_CHECK option is valid and set up handling
+  define ParseConfCheckOption
+    ifeq ($$(CONF_CHECK), )
+      # Default behavior is fail
+      CONF_CHECK := fail
+    else ifneq ($$(filter-out auto fail ignore, $$(CONF_CHECK)), )
+      $$(info Error: CONF_CHECK must be one of: auto, fail or ignore.)
+      $$(error Cannot continue)
+    endif
+  endef
+
+  define ParseConfAndSpec
+    ifneq ($$(origin SPEC), undefined)
+      # We have been given a SPEC, check that it works out properly
+      ifneq ($$(origin CONF), undefined)
+        # We also have a CONF argument. We can't have both.
+        $$(info Error: Cannot use CONF=$$(CONF) and SPEC=$$(SPEC) at the same time. Choose one.)
+        $$(error Cannot continue)
+      endif
+      ifneq ($$(origin CONF_NAME), undefined)
+        # We also have a CONF_NAME argument. We can't have both.
+        $$(info Error: Cannot use CONF_NAME=$$(CONF_NAME) and SPEC=$$(SPEC) at the same time. Choose one.)
+        $$(error Cannot continue)
+      endif
+      ifeq ($$(wildcard $$(SPEC)), )
+        $$(info Error: Cannot locate spec.gmk, given by SPEC=$$(SPEC).)
+        $$(error Cannot continue)
+      endif
+      ifeq ($$(filter /%, $$(SPEC)), )
+        # If given with relative path, make it absolute
+        SPECS := $$(CURDIR)/$$(strip $$(SPEC))
       else
-        # Otherwise assume patch file
-        COMPARE_BUILD_PATCH = $$(strip $$(COMPARE_BUILD))
+        SPECS := $$(SPEC)
+      endif
+
+      # For now, unset this SPEC variable.
+      override SPEC :=
+    else
+      # Use spec.gmk files in the build output directory
+      ifeq ($$(all_spec_files), )
+        ifneq ($(CUSTOM_ROOT), )
+          $$(info Error: No configurations found for $$(CUSTOM_ROOT).)
+        else
+          $$(info Error: No configurations found for $$(topdir).)
+        endif
+        $$(info Please run 'bash configure' to create a configuration.)
+        $$(info )
+        $$(error Cannot continue)
+      endif
+
+      ifneq ($$(origin CONF_NAME), undefined)
+        ifneq ($$(origin CONF), undefined)
+          # We also have a CONF argument. We can't have both.
+          $$(info Error: Cannot use CONF=$$(CONF) and CONF_NAME=$$(CONF_NAME) at the same time. Choose one.)
+          $$(error Cannot continue)
+        endif
+        matching_conf := $$(strip $$(filter $$(CONF_NAME), $$(all_confs)))
+        ifeq ($$(matching_conf), )
+          $$(info Error: No configurations found matching CONF_NAME=$$(CONF_NAME).)
+          $$(info Available configurations in $$(build_dir):)
+          $$(foreach var, $$(all_confs), $$(info * $$(var)))
+          $$(error Cannot continue)
+        else ifneq ($$(words $$(matching_conf)), 1)
+          $$(info Error: Matching more than one configuration CONF_NAME=$$(CONF_NAME).)
+          $$(info Available configurations in $$(build_dir):)
+          $$(foreach var, $$(all_confs), $$(info * $$(var)))
+          $$(error Cannot continue)
+        else
+          $$(info Building configuration '$$(matching_conf)' (matching CONF_NAME=$$(CONF_NAME)))
+        endif
+        # Create a SPEC definition. This will contain the path to exactly one spec file.
+        SPECS := $$(build_dir)/$$(matching_conf)/spec.gmk
+      else ifneq ($$(origin CONF), undefined)
+        # User have given a CONF= argument.
+        ifeq ($$(CONF), )
+          # If given CONF=, match all configurations
+          matching_confs := $$(strip $$(all_confs))
+        else
+          # Otherwise select those that contain the given CONF string
+          ifeq ($$(patsubst !%,,$$(CONF)), )
+            # A CONF starting with ! means we should negate the search term
+            matching_confs := $$(strip $$(foreach var, $$(all_confs), \
+                $$(if $$(findstring $$(subst !,,$$(CONF)), $$(var)), ,$$(var))))
+          else
+            matching_confs := $$(strip $$(foreach var, $$(all_confs), \
+                $$(if $$(findstring $$(CONF), $$(var)), $$(var))))
+          endif
+          ifneq ($$(filter $$(CONF), $$(matching_confs)), )
+            # If we found an exact match, use that
+            matching_confs := $$(CONF)
+            # Don't repeat this output on make restarts caused by including
+            # generated files.
+            ifeq ($$(MAKE_RESTARTS), )
+              $$(info Using exact match for CONF=$$(CONF) (other matches are possible))
+            endif
+          endif
+        endif
+        ifeq ($$(matching_confs), )
+          $$(info Error: No configurations found matching CONF=$$(CONF).)
+          $$(info Available configurations in $$(build_dir):)
+          $$(foreach var, $$(all_confs), $$(info * $$(var)))
+          $$(error Cannot continue)
+        else
+          # Don't repeat this output on make restarts caused by including
+          # generated files.
+          ifeq ($$(MAKE_RESTARTS), )
+            ifeq ($$(words $$(matching_confs)), 1)
+              ifneq ($$(findstring $$(LOG_LEVEL), info debug trace), )
+                $$(info Building configuration '$$(matching_confs)' (matching CONF=$$(CONF)))
+              endif
+            else
+              $$(info Building these configurations (matching CONF=$$(CONF)):)
+              $$(foreach var, $$(matching_confs), $$(info * $$(var)))
+            endif
+          endif
+        endif
+
+        # Create a SPEC definition. This will contain the path to one or more spec.gmk files.
+        SPECS := $$(addsuffix /spec.gmk, $$(addprefix $$(build_dir)/, $$(matching_confs)))
+      else
+        # No CONF or SPEC given, check the available configurations
+        ifneq ($$(words $$(all_spec_files)), 1)
+          $$(info Error: No CONF given, but more than one configuration found.)
+          $$(info Available configurations in $$(build_dir):)
+          $$(foreach var, $$(all_confs), $$(info * $$(var)))
+          $$(info Please retry building with CONF=<config pattern> (or SPEC=<spec file>).)
+          $$(info )
+          $$(error Cannot continue)
+        endif
+
+        # We found exactly one configuration, use it
+        SPECS := $$(strip $$(all_spec_files))
       endif
     endif
-    ifneq ($$(COMPARE_BUILD_PATCH), )
-      ifneq ($$(wildcard $$(WORKSPACE_ROOT)/$$(COMPARE_BUILD_PATCH)), )
-        # Assume relative path, if file exists
-        COMPARE_BUILD_PATCH := $$(wildcard $$(WORKSPACE_ROOT)/$$(COMPARE_BUILD_PATCH))
-      else ifeq ($$(wildcard $$(COMPARE_BUILD_PATCH)), )
-        $$(error Patch file $$(COMPARE_BUILD_PATCH) does not exist)
+  endef
+
+  # Extract main targets from Main.gmk using the spec provided in $2.
+  #
+  # Param 1: FORCE = force generation of main-targets.gmk or LAZY = do not force.
+  # Param 2: The SPEC file to use.
+  define DefineMainTargets
+
+    # We will start by making sure the main-targets.gmk file is removed, if
+    # make has not been restarted. By the -include, we will trigger the
+    # rule for generating the file (which is never there since we removed it),
+    # thus generating it fresh, and make will restart, incrementing the restart
+    # count.
+    main_targets_file := $$(dir $(strip $2))make-support/main-targets.gmk
+
+    ifeq ($$(MAKE_RESTARTS), )
+      # Only do this if make has not been restarted, and if we do not force it.
+      ifeq ($(strip $1), FORCE)
+        $$(shell rm -f $$(main_targets_file))
       endif
-      ifneq ($$(COMPARE_BUILD_NODRYRUN), true)
-        PATCH_DRY_RUN := $$(shell cd $$(WORKSPACE_ROOT) && $$(PATCH) --dry-run -p1 < $$(COMPARE_BUILD_PATCH) > /dev/null 2>&1 || $$(ECHO) FAILED)
-        ifeq ($$(PATCH_DRY_RUN), FAILED)
-          $$(error Patch file $$(COMPARE_BUILD_PATCH) does not apply cleanly)
+    endif
+
+    $$(main_targets_file):
+	@( cd $$(topdir) && \
+	$$(MAKE) $$(MAKE_LOG_FLAGS) -r -R -f $$(topdir)/make/Main.gmk \
+	    -I $$(topdir)/make/common SPEC=$(strip $2) NO_RECIPES=true \
+	    $$(MAKE_LOG_VARS) \
+	    create-main-targets-include )
+
+    # Now include main-targets.gmk. This will define ALL_MAIN_TARGETS.
+    -include $$(main_targets_file)
+  endef
+
+  define PrintConfCheckFailed
+	@echo ' '
+	@echo "Please rerun configure! Easiest way to do this is by running"
+	@echo "'make reconfigure'."
+	@echo "This behavior may also be changed using CONF_CHECK=<ignore|auto>."
+	@echo ' '
+  endef
+
+else # $(HAS_SPEC)=true
+  ##############################################################################
+  # Helper functions for the 'main' target. These functions assume a single,
+  # proper and existing SPEC is included.
+  ##############################################################################
+
+  include $(TOPDIR)/make/common/MakeBase.gmk
+
+  # Define basic logging setup
+  BUILD_LOG := $(OUTPUTDIR)/build.log
+  BUILD_PROFILE_LOG := $(OUTPUTDIR)/build-profile.log
+
+  BUILD_LOG_PIPE := > >($(TEE) -a $(BUILD_LOG)) 2> >($(TEE) -a $(BUILD_LOG) >&2) && wait
+  # Use this for simple echo/printf commands that are never expected to print
+  # to stderr.
+  BUILD_LOG_PIPE_SIMPLE := | $(TEE) -a $(BUILD_LOG)
+
+  ifneq ($(CUSTOM_ROOT), )
+    topdir = $(CUSTOM_ROOT)
+  else
+    topdir = $(TOPDIR)
+  endif
+
+  # Setup the build environment to match the requested specification on
+  # level of reproducible builds
+  define SetupReproducibleBuild
+    ifeq ($$(SOURCE_DATE), updated)
+      # For static values of SOURCE_DATE (not "updated"), these are set in spec.gmk
+      export SOURCE_DATE_EPOCH := $$(shell $$(DATE) +"%s")
+      export SOURCE_DATE_ISO_8601 := $$(call EpochToISO8601, $$(SOURCE_DATE_EPOCH))
+    endif
+  endef
+
+  # Parse COMPARE_BUILD into COMPARE_BUILD_*
+  # Syntax: COMPARE_BUILD=CONF=<configure options>:PATCH=<patch file>:
+  #         MAKE=<make targets>:COMP_OPTS=<compare script options>:
+  #         COMP_DIR=<compare script base dir>|<default>:
+  #         FAIL=<bool>
+  # If neither CONF or PATCH is given, assume <default> means CONF if it
+  # begins with "--", otherwise assume it means PATCH.
+  # MAKE and COMP_OPTS can only be used with CONF and/or PATCH specified.
+  # If any value contains "+", it will be replaced by space.
+  # FAIL can be set to false to have the return value of compare be ignored.
+  define ParseCompareBuild
+    ifneq ($$(COMPARE_BUILD), )
+      COMPARE_BUILD_OUTPUTDIR := $(topdir)/build/compare-build/$(CONF_NAME)
+      COMPARE_BUILD_FAIL := true
+
+      ifneq ($$(findstring :, $$(COMPARE_BUILD)), )
+        $$(foreach part, $$(subst :, , $$(COMPARE_BUILD)), \
+          $$(if $$(filter PATCH=%, $$(part)), \
+            $$(eval COMPARE_BUILD_PATCH = $$(strip $$(patsubst PATCH=%, %, $$(part)))) \
+          ) \
+          $$(if $$(filter CONF=%, $$(part)), \
+            $$(eval COMPARE_BUILD_CONF = $$(strip $$(subst +, , $$(patsubst CONF=%, %, $$(part))))) \
+          ) \
+          $$(if $$(filter MAKE=%, $$(part)), \
+            $$(eval COMPARE_BUILD_MAKE = $$(strip $$(subst +, , $$(patsubst MAKE=%, %, $$(part))))) \
+          ) \
+          $$(if $$(filter COMP_OPTS=%, $$(part)), \
+            $$(eval COMPARE_BUILD_COMP_OPTS = $$(strip $$(subst +, , $$(patsubst COMP_OPTS=%, %, $$(part))))) \
+          ) \
+          $$(if $$(filter COMP_DIR=%, $$(part)), \
+            $$(eval COMPARE_BUILD_COMP_DIR = $$(strip $$(subst +, , $$(patsubst COMP_DIR=%, %, $$(part))))) \
+          ) \
+          $$(if $$(filter FAIL=%, $$(part)), \
+            $$(eval COMPARE_BUILD_FAIL = $$(strip $$(subst +, , $$(patsubst FAIL=%, %, $$(part))))) \
+          ) \
+          $$(if $$(filter NODRYRUN=%, $$(part)), \
+            $$(eval COMPARE_BUILD_NODRYRUN = $$(strip $$(subst +, , $$(patsubst NODRYRUN=%, %, $$(part))))) \
+          ) \
+        )
+      else
+        # Separate handling for single field case, to allow for spaces in values.
+        ifneq ($$(filter PATCH=%, $$(COMPARE_BUILD)), )
+          COMPARE_BUILD_PATCH = $$(strip $$(patsubst PATCH=%, %, $$(COMPARE_BUILD)))
+        else ifneq ($$(filter CONF=%, $$(COMPARE_BUILD)), )
+          COMPARE_BUILD_CONF = $$(strip $$(subst +, , $$(patsubst CONF=%, %, $$(COMPARE_BUILD))))
+        else ifneq ($$(filter --%, $$(COMPARE_BUILD)), )
+          # Assume CONF if value begins with --
+          COMPARE_BUILD_CONF = $$(strip $$(subst +, , $$(COMPARE_BUILD)))
+        else
+          # Otherwise assume patch file
+          COMPARE_BUILD_PATCH = $$(strip $$(COMPARE_BUILD))
         endif
       endif
+      ifneq ($$(COMPARE_BUILD_PATCH), )
+        ifneq ($$(wildcard $$(topdir)/$$(COMPARE_BUILD_PATCH)), )
+          # Assume relative path, if file exists
+          COMPARE_BUILD_PATCH := $$(wildcard $$(topdir)/$$(COMPARE_BUILD_PATCH))
+        else ifeq ($$(wildcard $$(COMPARE_BUILD_PATCH)), )
+          $$(error Patch file $$(COMPARE_BUILD_PATCH) does not exist)
+        endif
+        ifneq ($$(COMPARE_BUILD_NODRYRUN), true)
+          PATCH_DRY_RUN := $$(shell cd $$(topdir) && $$(PATCH) --dry-run -p1 < $$(COMPARE_BUILD_PATCH) > /dev/null 2>&1 || $$(ECHO) FAILED)
+          ifeq ($$(PATCH_DRY_RUN), FAILED)
+            $$(error Patch file $$(COMPARE_BUILD_PATCH) does not apply cleanly)
+          endif
+        endif
+      endif
+      ifneq ($$(COMPARE_BUILD_FAIL), true)
+        COMPARE_BUILD_IGNORE_RESULT := || true
+      endif
     endif
-    ifneq ($$(COMPARE_BUILD_FAIL), true)
-      COMPARE_BUILD_IGNORE_RESULT := || true
-    endif
-  endif
-endef
+  endef
 
-# Prepare for a comparison rebuild
-define PrepareCompareBuild
+  # Prepare for a comparison rebuild
+  define PrepareCompareBuild
 	$(ECHO) "Preparing for comparison rebuild"
         # Apply patch, if any
-	$(if $(COMPARE_BUILD_PATCH), cd $(WORKSPACE_ROOT) && $(PATCH) -p1 < $(COMPARE_BUILD_PATCH))
+	$(if $(COMPARE_BUILD_PATCH), cd $(topdir) && $(PATCH) -p1 < $(COMPARE_BUILD_PATCH))
         # Move the first build away temporarily
-	$(RM) -r $(WORKSPACE_ROOT)/build/.compare-build-temp
-	$(MKDIR) -p $(WORKSPACE_ROOT)/build/.compare-build-temp
-	$(MV) $(OUTPUTDIR) $(WORKSPACE_ROOT)/build/.compare-build-temp
+	$(RM) -r $(topdir)/build/.compare-build-temp
+	$(MKDIR) -p $(topdir)/build/.compare-build-temp
+	$(MV) $(OUTPUTDIR) $(topdir)/build/.compare-build-temp
         # Restore an old compare-build, or create a new compare-build directory.
 	if test -d $(COMPARE_BUILD_OUTPUTDIR); then \
 	  $(MV) $(COMPARE_BUILD_OUTPUTDIR) $(OUTPUTDIR); \
@@ -140,23 +422,23 @@ define PrepareCompareBuild
         # Re-run configure with the same arguments (and possibly some additional),
         # must be done after patching.
 	( cd $(CONFIGURE_START_DIR) && PATH="$(ORIGINAL_PATH)" \
-	    $(BASH) $(WORKSPACE_ROOT)/configure $(CONFIGURE_COMMAND_LINE) $(COMPARE_BUILD_CONF))
-endef
+	    $(BASH) $(topdir)/configure $(CONFIGURE_COMMAND_LINE) $(COMPARE_BUILD_CONF))
+  endef
 
-# Cleanup after a compare build
-define CleanupCompareBuild
+  # Cleanup after a compare build
+  define CleanupCompareBuild
         # If running with a COMPARE_BUILD patch, reverse-apply it, but continue
         # even if that fails (can happen with removed files).
-	$(if $(COMPARE_BUILD_PATCH), cd $(WORKSPACE_ROOT) && $(PATCH) -R -p1 < $(COMPARE_BUILD_PATCH) || true)
+	$(if $(COMPARE_BUILD_PATCH), cd $(topdir) && $(PATCH) -R -p1 < $(COMPARE_BUILD_PATCH) || true)
         # Move this build away and restore the original build
-	$(MKDIR) -p $(WORKSPACE_ROOT)/build/compare-build
+	$(MKDIR) -p $(topdir)/build/compare-build
 	$(MV) $(OUTPUTDIR) $(COMPARE_BUILD_OUTPUTDIR)
-	$(MV) $(WORKSPACE_ROOT)/build/.compare-build-temp/$(CONF_NAME) $(OUTPUTDIR)
-	$(RM) -r $(WORKSPACE_ROOT)/build/.compare-build-temp
-endef
+	$(MV) $(topdir)/build/.compare-build-temp/$(CONF_NAME) $(OUTPUTDIR)
+	$(RM) -r $(topdir)/build/.compare-build-temp
+  endef
 
-# Do the actual comparison of two builds
-define CompareBuildDoComparison
+  # Do the actual comparison of two builds
+  define CompareBuildDoComparison
         # Compare first and second build. Ignore any error code from compare.sh.
 	$(ECHO) "Comparing between comparison rebuild (this/new) and baseline (other/old)"
 	$(if $(COMPARE_BUILD_COMP_DIR), \
@@ -166,9 +448,9 @@ define CompareBuildDoComparison
 	  +(cd $(COMPARE_BUILD_OUTPUTDIR) && ./compare.sh --diffs $(COMPARE_BUILD_COMP_OPTS) \
 	      -o $(OUTPUTDIR) $(COMPARE_BUILD_IGNORE_RESULT)) \
 	)
-endef
+  endef
 
-define PrintFailureReports
+  define PrintFailureReports
 	$(if $(filter none, $(LOG_REPORT)), , \
 	  $(RM) $(MAKESUPPORT_OUTPUTDIR)/failure-summary.log ; \
 	  $(if $(wildcard $(MAKESUPPORT_OUTPUTDIR)/failure-logs/*.log), \
@@ -190,9 +472,9 @@ define PrintFailureReports
 	    )  >> $(MAKESUPPORT_OUTPUTDIR)/failure-summary.log  \
 	  ) \
 	)
-endef
+  endef
 
-define PrintBuildLogFailures
+  define PrintBuildLogFailures
 	$(if $(filter none, $(LOG_REPORT)), , \
 	  if $(GREP) -q "recipe for target .* failed" $(BUILD_LOG) 2> /dev/null; then  \
 	    $(PRINTF) "\n=== Make failed targets repeated here ===\n" ; \
@@ -205,96 +487,96 @@ define PrintBuildLogFailures
 	  fi >> $(MAKESUPPORT_OUTPUTDIR)/failure-summary.log ; \
 	  $(CAT) $(MAKESUPPORT_OUTPUTDIR)/failure-summary.log \
 	)
-endef
+  endef
 
-define RotateLogFiles
+  define RotateLogFiles
 	$(RM) $(BUILD_LOG).old 2> /dev/null && \
 	$(MV) $(BUILD_LOG) $(BUILD_LOG).old 2> /dev/null || true
 	$(if $(findstring true, $(LOG_PROFILE_TIMES_FILE)), \
 	  $(RM) $(BUILD_PROFILE_LOG).old 2> /dev/null && \
 	  $(MV) $(BUILD_PROFILE_LOG) $(BUILD_PROFILE_LOG).old 2> /dev/null || true \
 	)
-endef
+  endef
 
-# Failure logs are only supported for "parallel" main targets, not the
-# (trivial) sequential make targets (such as clean and reconfigure),
-# since the failure-logs directory creation will conflict with clean.
-# We also make sure the javatmp directory exists, which is needed if a java
-# process (like javac) is using java.io.tmpdir.
-define PrepareFailureLogs
+  # Failure logs are only supported for "parallel" main targets, not the
+  # (trivial) sequential make targets (such as clean and reconfigure),
+  # since the failure-logs directory creation will conflict with clean.
+  # We also make sure the javatmp directory exists, which is needed if a java
+  # process (like javac) is using java.io.tmpdir.
+  define PrepareFailureLogs
 	$(RM) -r $(MAKESUPPORT_OUTPUTDIR)/failure-logs 2> /dev/null && \
 	$(MKDIR) -p $(MAKESUPPORT_OUTPUTDIR)/failure-logs
 	$(MKDIR) -p $(JAVA_TMP_DIR)
 	$(RM) $(MAKESUPPORT_OUTPUTDIR)/exit-with-error 2> /dev/null
-endef
+  endef
 
-# Remove any javac server logs and port files. This
-# prevents a new make run to reuse the previous servers.
-define PrepareJavacServer
+  # Remove any javac server logs and port files. This
+  # prevents a new make run to reuse the previous servers.
+  define PrepareJavacServer
 	$(if $(JAVAC_SERVER_DIR), \
 	  $(RM) -r $(JAVAC_SERVER_DIR) 2> /dev/null && \
 	  $(MKDIR) -p $(JAVAC_SERVER_DIR) \
 	)
-endef
+  endef
 
-define CleanupJavacServer
+  define CleanupJavacServer
 	[ -f $(JAVAC_SERVER_DIR)/server.port ] && $(ECHO) Stopping javac server && \
 	    $(TOUCH) $(JAVAC_SERVER_DIR)/server.port.stop; true
-endef
+  endef
 
-ifeq ($(call isBuildOs, windows), true)
-  # On windows we need to synchronize with the javac server to be able to
-  # move or remove the build output directory. Since we have no proper
-  # synchronization process, wait for a while and hope it helps. This is only
-  # used by build comparisons.
+  ifeq ($(call isBuildOs, windows), true)
+    # On windows we need to synchronize with the javac server to be able to
+    # move or remove the build output directory. Since we have no proper
+    # synchronization process, wait for a while and hope it helps. This is only
+    # used by build comparisons.
     define WaitForJavacServerFinish
 	$(if $(JAVAC_SERVER_DIR), \
 	  sleep 5 \
 	)
-  endef
-else
-  define WaitForJavacServerFinish
-  endef
-endif
+    endef
+  else
+    define WaitForJavacServerFinish
+    endef
+  endif
 
-##############################################################################
-# Functions for timers
-##############################################################################
+  ##############################################################################
+  # Functions for timers
+  ##############################################################################
 
-# Store the build times in this directory.
-BUILDTIMESDIR := $(OUTPUTDIR)/make-support/build-times
+  # Store the build times in this directory.
+  BUILDTIMESDIR = $(OUTPUTDIR)/make-support/build-times
 
-# Record starting time for build of a sub repository.
-define RecordStartTime
+  # Record starting time for build of a sub repository.
+  define RecordStartTime
 	$(DATE) '+%Y %m %d %H %M %S' | $(AWK) '{ print $$1,$$2,$$3,$$4,$$5,$$6,($$4*3600+$$5*60+$$6) }' > $(BUILDTIMESDIR)/build_time_start_$(strip $1) && \
 	$(DATE) '+%Y-%m-%d %H:%M:%S' > $(BUILDTIMESDIR)/build_time_start_$(strip $1)_human_readable
-endef
+  endef
 
-# Record ending time and calculate the difference and store it in a
-# easy to read format. Handles builds that cross midnight. Expects
-# that a build will never take 24 hours or more.
-define RecordEndTime
+  # Record ending time and calculate the difference and store it in a
+  # easy to read format. Handles builds that cross midnight. Expects
+  # that a build will never take 24 hours or more.
+  define RecordEndTime
 	$(DATE) '+%Y %m %d %H %M %S' | $(AWK) '{ print $$1,$$2,$$3,$$4,$$5,$$6,($$4*3600+$$5*60+$$6) }' > $(BUILDTIMESDIR)/build_time_end_$(strip $1)
 	$(DATE) '+%Y-%m-%d %H:%M:%S' > $(BUILDTIMESDIR)/build_time_end_$(strip $1)_human_readable
 	$(ECHO) `$(CAT) $(BUILDTIMESDIR)/build_time_start_$(strip $1)` `$(CAT) $(BUILDTIMESDIR)/build_time_end_$(strip $1)` $1 | \
 	    $(AWK) '{ F=$$7; T=$$14; if (F > T) { T+=3600*24 }; D=T-F; H=int(D/3600); \
 	    M=int((D-H*3600)/60); S=D-H*3600-M*60; printf("%02d:%02d:%02d %s\n",H,M,S,$$15); }' \
 	    > $(BUILDTIMESDIR)/build_time_diff_$(strip $1)
-endef
+  endef
 
-define StartGlobalTimer
+  define StartGlobalTimer
 	$(RM) -r $(BUILDTIMESDIR) 2> /dev/null && \
 	$(MKDIR) -p $(BUILDTIMESDIR) && \
 	$(call RecordStartTime,TOTAL)
-endef
+  endef
 
-define StopGlobalTimer
+  define StopGlobalTimer
 	$(call RecordEndTime,TOTAL)
-endef
+  endef
 
-# Find all build_time_* files and print their contents in a list sorted
-# on the name of the sub repository.
-define ReportBuildTimes
+  # Find all build_time_* files and print their contents in a list sorted
+  # on the name of the sub repository.
+  define ReportBuildTimes
 	$(PRINTF) $(LOG_INFO) -- \
 	    "----- Build times -------\nStart %s\nEnd   %s\n%s\n%s\n-------------------------\n" \
 	    "`$(CAT) $(BUILDTIMESDIR)/build_time_start_TOTAL_human_readable`" \
@@ -303,20 +585,119 @@ define ReportBuildTimes
 	    $(XARGS) $(CAT) | $(SORT) -k 2`" \
 	    "`$(CAT) $(BUILDTIMESDIR)/build_time_diff_TOTAL`" \
 	    $(BUILD_LOG_PIPE_SIMPLE)
+  endef
+
+  define ReportProfileTimes
+    $(if $(findstring true, $(LOG_PROFILE_TIMES_LOG)), \
+      [ ! -f $(BUILD_PROFILE_LOG) ] || \
+      { $(ECHO) Begin $(notdir $(BUILD_PROFILE_LOG)) && \
+        $(CAT) $(BUILD_PROFILE_LOG) && \
+        $(ECHO) End $(notdir $(BUILD_PROFILE_LOG)); \
+      } \
+      $(BUILD_LOG_PIPE_SIMPLE)
+    )
+  endef
+
+endif # HAS_SPEC
+
+# Look for a given option in the LOG variable, and if found, set a variable
+# and remove the option from the LOG variable
+# $1: The option to look for
+# $2: The variable to set to "true" if the option is found
+define ParseLogOption
+  ifneq ($$(findstring $1, $$(LOG)), )
+    override $2 := true
+    # First try to remove ",<option>" if it exists, otherwise just remove "<option>"
+    LOG_STRIPPED := $$(subst $1,, $$(subst $$(COMMA)$$(strip $1),, $$(LOG)))
+    # We might have ended up with a leading comma. Remove it. Need override
+    # since LOG is set from the command line.
+    override LOG := $$(strip $$(patsubst $$(COMMA)%, %, $$(LOG_STRIPPED)))
+  endif
 endef
 
-define ReportProfileTimes
-  $(if $(findstring true, $(LOG_PROFILE_TIMES_LOG)), \
-    [ ! -f $(BUILD_PROFILE_LOG) ] || \
-    { $(ECHO) Begin $(notdir $(BUILD_PROFILE_LOG)) && \
-      $(CAT) $(BUILD_PROFILE_LOG) && \
-      $(ECHO) End $(notdir $(BUILD_PROFILE_LOG)); \
-    } \
-    $(BUILD_LOG_PIPE_SIMPLE)
-  )
+# Look for a given option with an assignment in the LOG variable, and if found,
+# set a variable to that value and remove the option from the LOG variable
+# $1: The option to look for
+# $2: The variable to set to the value of the option, if found
+define ParseLogValue
+  ifneq ($$(findstring $1=, $$(LOG)), )
+    # Make words of out comma-separated list and find the one with opt=val
+    value := $$(strip $$(subst $$(strip $1)=,, $$(filter $$(strip $1)=%, $$(subst $$(COMMA), , $$(LOG)))))
+    override $2 := $$(value)
+    # First try to remove ",<option>" if it exists, otherwise just remove "<option>"
+    LOG_STRIPPED := $$(subst $$(strip $1)=$$(value),, \
+        $$(subst $$(COMMA)$$(strip $1)=$$(value),, $$(LOG)))
+    # We might have ended up with a leading comma. Remove it. Need override
+    # since LOG is set from the command line.
+    override LOG := $$(strip $$(patsubst $$(COMMA)%, %, $$(LOG_STRIPPED)))
+  endif
 endef
 
-################################################################################
 
-endif # include guard
-include MakeIncludeEnd.gmk
+define ParseLogLevel
+  # Catch old-style VERBOSE= command lines.
+  ifneq ($$(origin VERBOSE), undefined)
+    $$(info Error: VERBOSE is deprecated. Use LOG=<warn|info|debug|trace> instead.)
+    $$(error Cannot continue)
+  endif
+
+  # Setup logging according to LOG
+
+  # If "nofile" is present, do not log to a file
+  $$(eval $$(call ParseLogOption, nofile, LOG_NOFILE))
+
+  # If "cmdline" is present, print all executes "important" command lines.
+  $$(eval $$(call ParseLogOption, cmdlines, LOG_CMDLINES))
+
+  # If "report" is present, use non-standard reporting options at build failure.
+  $$(eval $$(call ParseLogValue, report, LOG_REPORT))
+  ifneq ($$(LOG_REPORT), )
+    ifeq ($$(filter $$(LOG_REPORT), none all default), )
+      $$(info Error: LOG=report has invalid value: $$(LOG_REPORT).)
+      $$(info Valid values: LOG=report=<none>|<all>|<default>)
+      $$(error Cannot continue)
+    endif
+  endif
+
+  # If "profile-to-log" is present, write shell times in build log
+  $$(eval $$(call ParseLogOption, profile-to-log, LOG_PROFILE_TIMES_LOG))
+
+  # If "profile" is present, write shell times in separate log file
+  # IMPORTANT: $(ParseLogOption profile-to-log) should go first. Otherwise
+  # parsing of 'LOG=debug,profile-to-log,nofile' ends up in the following error:
+  # Error: LOG contains unknown option or log level: debug-to-log.
+  $$(eval $$(call ParseLogOption, profile, LOG_PROFILE_TIMES_FILE))
+
+  # Treat LOG=profile-to-log as if it were LOG=profile,profile-to-log
+  LOG_PROFILE_TIMES_FILE := $$(firstword $$(LOG_PROFILE_TIMES_FILE) $$(LOG_PROFILE_TIMES_LOG))
+
+  override LOG_LEVEL := $$(LOG)
+
+  ifeq ($$(LOG_LEVEL), )
+    # Set LOG to "warn" as default if not set
+    override LOG_LEVEL := warn
+  endif
+
+  ifeq ($$(LOG_LEVEL), warn)
+    override MAKE_LOG_FLAGS := -s
+  else ifeq ($$(LOG_LEVEL), info)
+    override MAKE_LOG_FLAGS := -s
+  else ifeq ($$(LOG_LEVEL), debug)
+    override MAKE_LOG_FLAGS :=
+  else ifeq ($$(LOG_LEVEL), trace)
+    override MAKE_LOG_FLAGS :=
+  else
+    $$(info Error: LOG contains unknown option or log level: $$(LOG).)
+    $$(info LOG can be <level>[,<opt>[...]] where <opt> is nofile | cmdlines | profile | profile-to-log)
+    $$(info and <level> is warn | info | debug | trace)
+    $$(error Cannot continue)
+  endif
+endef
+
+MAKE_LOG_VARS = $(foreach v, \
+    LOG_LEVEL LOG_NOFILE LOG_CMDLINES LOG_REPORT LOG_PROFILE_TIMES_LOG \
+    LOG_PROFILE_TIMES_FILE, \
+    $v=$($v) \
+)
+
+endif # _INITSUPPORT_GMK

make/InterimImage.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include Execute.gmk
 include Modules.gmk
@@ -57,4 +58,6 @@ TARGETS += $(jlink_interim_image)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all

make/JrtfsJar.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,13 +23,14 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
-include JarArchive.gmk
 include JavaCompilation.gmk
+include JarArchive.gmk
 include TextFileProcessing.gmk
 
 # This rule will be depended on due to the MANIFEST line
@@ -77,7 +78,3 @@ $(eval $(call SetupJarArchive, BUILD_JRTFS_JAR, \
 ))
 
 all: $(BUILD_JRTFS_JAR)
-
-################################################################################
-
-include MakeFileEnd.gmk

make/MacBundles.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,8 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include TextFileProcessing.gmk
@@ -119,7 +118,3 @@ else # Not macosx
 endif # macosx
 
 .PHONY: jdk-bundle jre-bundle bundles
-
-################################################################################
-
-include MakeFileEnd.gmk

make/Main.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -24,35 +24,44 @@
 #
 
 ################################################################################
-# This is the main makefile containing most actual top level targets.
+# This is the main makefile containing most actual top level targets. It needs
+# to be called with a SPEC file defined.
 ################################################################################
 
-# Declare ALL_TARGETS as an immediate variable. This variable is a list of all
-# valid top level targets. It's used to declare them all as PHONY and to
-# generate the -only targets.
+# Declare default target
+default:
 
-ALL_TARGETS :=
+ifeq ($(wildcard $(SPEC)), )
+  $(error Main.gmk needs SPEC set to a proper spec.gmk)
+endif
 
-DEFAULT_TARGET := default-target
+# Now load the spec
+include $(SPEC)
 
-include MakeFileStart.gmk
-
-################################################################################
+# Load the vital tools for all the makefiles.
+include $(TOPDIR)/make/common/MakeBase.gmk
+include $(TOPDIR)/make/common/Modules.gmk
+include $(TOPDIR)/make/common/FindTests.gmk
 
 include $(TOPDIR)/make/MainSupport.gmk
 
-include FindTests.gmk
-include Modules.gmk
-
 # Are we requested to ignore dependencies?
 ifneq ($(findstring -only, $(MAKECMDGOALS)), )
   DEPS := none
 endif
 
+# Declare ALL_TARGETS as an immediate variable. This variable is a list of all
+# valid top level targets. It's used to declare them all as PHONY and to
+# generate the -only targets.
+ALL_TARGETS :=
+
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Main.gmk))
 
 # All modules for the current target platform.
 ALL_MODULES := $(call FindAllModules)
 
+################################################################################
 ################################################################################
 #
 # Recipes for all targets. Only recipes, dependencies are declared later.
@@ -347,14 +356,6 @@ $(eval $(call SetupTarget, vscode-project-ccls, \
     DEPS := compile-commands, \
 ))
 
-################################################################################
-# IDEA IntelliJ projects
-
-$(eval $(call SetupTarget, idea-gen-config, \
-    MAKEFILE := ide/idea/jdk/IdeaGenConfig, \
-    ARGS := IDEA_OUTPUT="$(IDEA_OUTPUT)" MODULES="$(MODULES)" TOPLEVEL_DIR="$(TOPLEVEL_DIR)" IDEA_OUTPUT_PARENT="$(IDEA_OUTPUT_PARENT)", \
-))
-
 ################################################################################
 # Build demos targets
 
@@ -1333,7 +1334,7 @@ ALL_TARGETS += buildtools hotspot hotspot-libs hotspot-static-libs \
 # Traditional targets typically run by users.
 # These can be considered aliases for the targets now named by a more
 # "modern" naming scheme.
-default-target: $(DEFAULT_MAKE_TARGET)
+default: $(DEFAULT_MAKE_TARGET)
 jdk: exploded-image
 images: product-images
 docs: docs-image
@@ -1368,6 +1369,7 @@ ALL_TARGETS += $(RUN_TEST_TARGETS) run-test exploded-run-test check \
     test-hotspot-jtreg test-hotspot-jtreg-native test-hotspot-gtest \
     test-jdk-jtreg-native test-docs
 
+################################################################################
 ################################################################################
 #
 # Clean targets
@@ -1484,8 +1486,10 @@ $(eval $(call SetupTarget, jbr-api, \
     TARGET := jbr-api \
 ))
 
+################################################################################
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Main-post.gmk))
+
 .PHONY: $(ALL_TARGETS)
 
 FRC: # Force target
-
-include MakeFileEnd.gmk

make/MainSupport.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,13 +23,13 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
 ################################################################################
 # This file contains helper functions for Main.gmk.
 ################################################################################
 
+ifndef _MAINSUPPORT_GMK
+_MAINSUPPORT_GMK := 1
+
 # Setup make rules for creating a top-level target.
 # Parameter 1 is the name of the rule. This name is used as variable prefix.
 #
@@ -218,5 +218,4 @@ endef
 
 ################################################################################
 
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _MAINSUPPORT_GMK

make/ModuleTools.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2013, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,8 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
-################################################################################
+ifndef _MODULE_TOOLS_GMK
+_MODULE_TOOLS_GMK := 1
 
 include JavaCompilation.gmk
 
@@ -51,7 +49,4 @@ TOOL_ADD_PACKAGES_ATTRIBUTE := $(BUILD_JAVA) $(JAVA_FLAGS_SMALL_BUILDJDK) \
     --add-exports java.base/jdk.internal.module=ALL-UNNAMED \
     build.tools.jigsaw.AddPackagesAttribute
 
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _MODULE_TOOLS_GMK

make/ModuleWrapper.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,29 +23,27 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
 ################################################################################
 # This makefile is called from Main.gmk, through a macro in MakeHelpers.gmk
 # and wraps calls to makefiles for specific modules and build phases. Having
 # this wrapper reduces the need for boilerplate code. It also provides
 # opportunity for automatic copying of files to an interim exploded runnable
 # image.
-################################################################################
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 
 MODULE_SRC := $(TOPDIR)/src/$(MODULE)
 
-# Define the snippet for MakeSnippetStart/End
-THIS_SNIPPET := modules/$(MODULE)/$(MAKEFILE_PREFIX).gmk
-
-include MakeSnippetStart.gmk
+# All makefiles should add the targets to be built to this variable.
+TARGETS :=
 
 # Include the file being wrapped.
-include $(THIS_SNIPPET)
-
-include MakeSnippetEnd.gmk
+include $(MAKEFILE_PREFIX).gmk
 
 ifeq ($(MAKEFILE_PREFIX), Lib)
   # We need to keep track of what libraries are generated/needed by this
@@ -130,12 +128,8 @@ $(eval $(call SetupCopyFiles, COPY_CONF, \
 ))
 
 ifeq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)
-  TARGETS := $(filter $(MAKESUPPORT_OUTPUTDIR)/compile-commands/%, $(TARGETS))
+  all: $(filter $(MAKESUPPORT_OUTPUTDIR)/compile-commands/%, $(TARGETS))
 else
-  TARGETS += $(COPY_LIBS_TO_BIN) $(COPY_LIBS_TO_LIB) \
+  all: $(TARGETS) $(COPY_LIBS_TO_BIN) $(COPY_LIBS_TO_LIB) \
       $(COPY_INCLUDE) $(COPY_CMDS) $(COPY_MAN) $(COPY_CONF) $(LINK_LIBS_TO_LIB)
 endif
-
-################################################################################
-
-include MakeFileEnd.gmk

make/PreInit.gmk

@@ -1,224 +0,0 @@
-#
-# Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# This file is the earliest part of the build bootstrap process (not counting
-# Makefile that includes it). Its main responsibility is to figure out what
-# configuration to use and pick up the corresponding SPEC file. It will then
-# call Init.gmk with this SPEC for further bootstrapping.
-################################################################################
-
-# This must be the first rule
-default:
-.PHONY: default
-
-# Inclusion of this pseudo-target will cause make to execute this file
-# serially, regardless of -j.
-.NOTPARALLEL:
-
-IS_PREINIT_ENV := true
-
-# Include our helper functions.
-include $(TOPDIR)/make/PreInitSupport.gmk
-include $(TOPDIR)/make/common/LogUtils.gmk
-
-# Here are "global" targets, i.e. targets that can be executed without having
-# a configuration. This will define ALL_GLOBAL_TARGETS.
-include $(TOPDIR)/make/Global.gmk
-
-# CALLED_TARGETS is the list of targets that the user provided,
-# or "default" if unspecified.
-CALLED_TARGETS := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), default)
-
-# Extract non-global targets that require a spec file.
-CALLED_SPEC_TARGETS := $(filter-out $(ALL_GLOBAL_TARGETS), $(CALLED_TARGETS))
-
-# If we have only global targets, or if we are called with -qp (assuming an
-# external part, e.g. bash completion, is trying to understand our targets),
-# we will skip SPEC location and the sanity checks.
-ifeq ($(CALLED_SPEC_TARGETS), )
-  SKIP_SPEC := true
-endif
-ifeq ($(findstring p, $(MAKEFLAGS))$(findstring q, $(MAKEFLAGS)), pq)
-  SKIP_SPEC := true
-endif
-
-ifneq ($(SKIP_SPEC), true)
-
-  ############################################################################
-  # This is the common case: we have been called from the command line by the
-  # user with a target that should be delegated to Main.gmk, so we need to
-  # figure out a proper SPEC and call Init.gmk with it.
-  ############################################################################
-
-  # Basic checks on environment and command line.
-  $(eval $(call CheckControlVariables))
-  $(eval $(call CheckDeprecatedEnvironment))
-  $(eval $(call CheckInvalidMakeFlags))
-
-  # Check that CONF_CHECK is valid.
-  $(eval $(call ParseConfCheckOption))
-
-  # Check that the LOG given is valid, and set LOG_LEVEL, LOG_NOFILE,
-  # MAKE_LOG_VARS and MAKE_LOG_FLAGS.
-  $(eval $(call ParseLogLevel))
-
-  # After this SPECS contain 1..N spec files (otherwise ParseConfAndSpec fails).
-  $(eval $(call ParseConfAndSpec))
-
-  # Extract main targets from Main.gmk using the spec(s) provided. In theory,
-  # with multiple specs, we should find the intersection of targets provided
-  # by all specs, but we approximate this by an arbitrary spec from the list.
-  # This will setup ALL_MAIN_TARGETS.
-  $(eval $(call DefineMainTargets, FORCE, $(firstword $(SPECS))))
-
-  # Targets provided by Init.gmk.
-  ALL_INIT_TARGETS := print-modules print-targets print-configuration \
-      print-tests reconfigure pre-compare-build post-compare-build
-
-  # Separate called targets depending on type.
-  INIT_TARGETS := $(filter $(ALL_INIT_TARGETS), $(CALLED_SPEC_TARGETS))
-  MAIN_TARGETS := $(filter $(ALL_MAIN_TARGETS), $(CALLED_SPEC_TARGETS))
-  SEQUENTIAL_TARGETS := $(filter dist-clean clean%, $(MAIN_TARGETS))
-  PARALLEL_TARGETS := $(filter-out $(SEQUENTIAL_TARGETS), $(MAIN_TARGETS))
-
-  MAKE_INIT_ARGS := $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -I $(TOPDIR)/make/common
-
-  # The spec files depend on the autoconf source code. This check makes sure
-  # the configuration is up to date after changes to configure.
-  $(SPECS): $(wildcard $(TOPDIR)/make/autoconf/*) \
-          $(if $(CUSTOM_CONFIG_DIR), $(wildcard $(CUSTOM_CONFIG_DIR)/*)) \
-          $(addprefix $(TOPDIR)/make/conf/, version-numbers.conf branding.conf) \
-          $(if $(CUSTOM_CONF_DIR), $(wildcard $(addprefix $(CUSTOM_CONF_DIR)/, \
-              version-numbers.conf branding.conf)))
-      ifeq ($(CONF_CHECK), fail)
-	@echo Error: The configuration is not up to date for \
-	    "'$(lastword $(subst /, , $(dir $@)))'."
-	$(call PrintConfCheckFailed)
-	@exit 2
-      else ifeq ($(CONF_CHECK), auto)
-	@echo Note: The configuration is not up to date for \
-	    "'$(lastword $(subst /, , $(dir $@)))'."
-	@( cd $(TOPDIR) && \
-	    $(MAKE) $(MAKE_INIT_ARGS) -f $(TOPDIR)/make/Init.gmk SPEC=$@ \
-	    reconfigure )
-      else ifeq ($(CONF_CHECK), ignore)
-        # Do nothing
-      endif
-
-  # Do not let make delete spec files even if aborted while doing a reconfigure
-  .PRECIOUS: $(SPECS)
-
-  # Unless reconfigure is explicitly called, let all main targets depend on
-  # the spec files to be up to date.
-  ifeq ($(findstring reconfigure, $(INIT_TARGETS)), )
-    $(MAIN_TARGETS): $(SPECS)
-  endif
-
-  make-info:
-      ifneq ($(findstring $(LOG_LEVEL), info debug trace), )
-	  $(info Running make as '$(strip $(MAKE) $(MFLAGS) \
-	      $(COMMAND_LINE_VARIABLES) $(MAKECMDGOALS))')
-      endif
-
-  MAKE_INIT_MAIN_TARGET_ARGS := \
-      USER_MAKE_VARS="$(USER_MAKE_VARS)" MAKE_LOG_FLAGS=$(MAKE_LOG_FLAGS) \
-      $(MAKE_LOG_VARS) \
-      INIT_TARGETS="$(INIT_TARGETS)" \
-      SEQUENTIAL_TARGETS="$(SEQUENTIAL_TARGETS)" \
-      PARALLEL_TARGETS="$(PARALLEL_TARGETS)"
-
-  # Now the init and main targets will be called, once for each SPEC. The
-  # recipe will be run once for every target specified, but we only want to
-  # execute the recipe a single time, hence the TARGET_DONE with a dummy
-  # command if true.
-  # The COMPARE_BUILD part implements special support for makefile development.
-  $(ALL_INIT_TARGETS) $(ALL_MAIN_TARGETS): make-info
-	@$(if $(TARGET_DONE), \
-	  true \
-	, \
-	  ( cd $(TOPDIR) && \
-	  $(foreach spec, $(SPECS), \
-	    $(MAKE) $(MAKE_INIT_ARGS) -j 1 -f $(TOPDIR)/make/Init.gmk \
-	        SPEC=$(spec) $(MAKE_INIT_MAIN_TARGET_ARGS) \
-	        main && \
-	    $(if $(and $(COMPARE_BUILD), $(PARALLEL_TARGETS)), \
-	      $(MAKE) $(MAKE_INIT_ARGS) -f $(TOPDIR)/make/Init.gmk \
-	          SPEC=$(spec) \
-	          COMPARE_BUILD="$(COMPARE_BUILD)" \
-	          pre-compare-build && \
-	      $(MAKE) $(MAKE_INIT_ARGS) -j 1 -f $(TOPDIR)/make/Init.gmk \
-	          SPEC=$(spec) $(MAKE_INIT_MAIN_TARGET_ARGS) \
-	          COMPARE_BUILD="$(COMPARE_BUILD):NODRYRUN=true" \
-	          main && \
-	      $(MAKE) $(MAKE_INIT_ARGS) -f $(TOPDIR)/make/Init.gmk \
-	          SPEC=$(spec) \
-	          COMPARE_BUILD="$(COMPARE_BUILD):NODRYRUN=true" \
-	          post-compare-build && \
-	    ) \
-	  ) true ) \
-	  $(eval TARGET_DONE=true) \
-	)
-
-  .PHONY: $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS)
-
-else # SKIP_SPEC=true
-
-  ############################################################################
-  # We have only global targets, or are called with -pq (from command
-  # completion). In this case we might not even have a configuration at all, but
-  # still need to handle the situation gracefully even if there is no SPEC file.
-  ############################################################################
-
-  ifeq ($(wildcard $(SPEC)), )
-    # If we have no SPEC provided, we will just make a "best effort" target list.
-    # First try to grab any available pre-existing main-targets.gmk.
-    main_targets_file := $(firstword $(wildcard $(build_dir)/*/make-support/main-targets.gmk))
-    ifneq ($(main_targets_file), )
-      # Extract the SPEC that corresponds to this main-targets.gmk file.
-      SPEC := $(patsubst %/make-support/main-targets.gmk, %/spec.gmk, $(main_targets_file))
-    else
-      # None found, pick an arbitrary SPEC for which to generate a file
-      SPEC := $(firstword $(all_spec_files))
-    endif
-  endif
-
-  ifneq ($(wildcard $(SPEC)), )
-    $(eval $(call DefineMainTargets, LAZY, $(SPEC)))
-  else
-    # If we have no configurations we can not provide any main targets.
-    ALL_MAIN_TARGETS :=
-  endif
-
-  ALL_TARGETS := $(sort $(ALL_GLOBAL_TARGETS) $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS))
-
-  # Just list all our targets.
-  $(ALL_TARGETS):
-
-  .PHONY: $(ALL_TARGETS)
-
-endif # $(SKIP_SPEC)!=true
-
-################################################################################

make/PreInitSupport.gmk

@@ -1,299 +0,0 @@
-#
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# Helper functions for PreInit.gmk, the initial part of initialization before
-# the SPEC file is loaded. Most of these functions provide parsing and setting
-# up make options from the command-line.
-################################################################################
-
-# Include the corresponding closed file, if present.
-ifneq ($(CUSTOM_MAKE_DIR), )
-  -include $(CUSTOM_MAKE_DIR)/PreInitSupport-pre.gmk
-endif
-
-# COMMA is defined in spec.gmk, but that is not included yet
-COMMA := ,
-
-# Essential control variables that are handled by PreInit.gmk or Init.gmk
-INIT_CONTROL_VARIABLES := LOG CONF CONF_NAME SPEC JOBS CONF_CHECK ALLOW \
-    COMPARE_BUILD
-
-# All known make control variables; these are handled in other makefiles
-MAKE_CONTROL_VARIABLES += JDK_FILTER SPEC_FILTER \
-    TEST TEST_JOBS JTREG GTEST MICRO TEST_OPTS TEST_VM_OPTS TEST_DEPS
-
-ALL_CONTROL_VARIABLES := $(INIT_CONTROL_VARIABLES) $(MAKE_CONTROL_VARIABLES)
-
-# Define a simple reverse function.
-# Should maybe move to MakeBase.gmk, but we can't include that file now.
-reverse = \
-    $(if $(strip $(1)), $(call reverse, $(wordlist 2, $(words $(1)), $(1)))) \
-        $(firstword $(1))
-
-# The variable MAKEOVERRIDES contains variable assignments from the command
-# line, but in reverse order to what the user entered.
-# The '§' <=> '\ 'dance is needed to keep values with space in them connected.
-COMMAND_LINE_VARIABLES := $(subst §,\ , $(call reverse, $(subst \ ,§,$(MAKEOVERRIDES))))
-
-# A list like FOO="val1" BAR="val2" containing all user-supplied make
-# variables that we should propagate.
-# The '§' <=> '\ 'dance is needed to keep values with space in them connected.
-# This explicit propagation is needed to avoid problems with characters that needs
-# escaping.
-USER_MAKE_VARS := $(subst §,\ , $(filter-out $(addsuffix =%, $(ALL_CONTROL_VARIABLES)), \
-    $(subst \ ,§,$(MAKEOVERRIDES))))
-
-# Setup information about available configurations, if any.
-ifneq ($(CUSTOM_ROOT), )
-  build_dir := $(CUSTOM_ROOT)/build
-else
-  build_dir := $(TOPDIR)/build
-endif
-all_spec_files := $(wildcard $(build_dir)/*/spec.gmk)
-# Extract the configuration names from the path
-all_confs := $(patsubst %/spec.gmk, %, $(patsubst $(build_dir)/%, %, $(all_spec_files)))
-
-# Check for unknown command-line variables
-define CheckControlVariables
-  command_line_variables := $$(strip $$(foreach var, \
-      $$(subst \ ,_,$$(MAKEOVERRIDES)), \
-      $$(firstword $$(subst =, , $$(var)))))
-  allowed_command_line_variables := $$(strip $$(subst $$(COMMA), , $$(ALLOW)))
-  unknown_command_line_variables := $$(strip \
-      $$(filter-out $$(ALL_CONTROL_VARIABLES) $$(allowed_command_line_variables), \
-      $$(command_line_variables)))
-  ifneq ($$(unknown_command_line_variables), )
-    $$(info Note: Command line contains non-control variables:)
-    $$(foreach var, $$(unknown_command_line_variables), $$(info * $$(var)=$$($$(var))))
-    $$(info Make sure it is not mistyped, and that you intend to override this variable.)
-    $$(info 'make help' will list known control variables.)
-    $$(info )
-  endif
-endef
-
-# Check for deprecated ALT_ variables
-define CheckDeprecatedEnvironment
-  defined_alt_variables := $$(filter ALT_%, $$(.VARIABLES))
-  ifneq ($$(defined_alt_variables), )
-    $$(info Warning: You have the following ALT_ variables set:)
-    $$(foreach var, $$(defined_alt_variables), $$(info * $$(var)=$$($$(var))))
-    $$(info ALT_ variables are deprecated, and may result in a failed build.)
-    $$(info Please clean your environment.)
-    $$(info )
-  endif
-endef
-
-# Check for invalid make flags like -j
-define CheckInvalidMakeFlags
-  # This is a trick to get this rule to execute before any other rules
-  # MAKEFLAGS only indicate -j if read in a recipe (!)
-  $$(TOPDIR)/make/PreInit.gmk: .FORCE
-	$$(if $$(findstring --jobserver, $$(MAKEFLAGS)), \
-	    $$(info Error: 'make -jN' is not supported, use 'make JOBS=N') \
-	    $$(error Cannot continue) \
-	)
-  .FORCE:
-  .PHONY: .FORCE
-endef
-
-# Check that the CONF_CHECK option is valid and set up handling
-define ParseConfCheckOption
-  ifeq ($$(CONF_CHECK), )
-    # Default behavior is fail
-    CONF_CHECK := fail
-  else ifneq ($$(filter-out auto fail ignore, $$(CONF_CHECK)), )
-    $$(info Error: CONF_CHECK must be one of: auto, fail or ignore.)
-    $$(error Cannot continue)
-  endif
-endef
-
-define ParseConfAndSpec
-  ifneq ($$(origin SPEC), undefined)
-    # We have been given a SPEC, check that it works out properly
-    ifneq ($$(origin CONF), undefined)
-      # We also have a CONF argument. We can't have both.
-      $$(info Error: Cannot use CONF=$$(CONF) and SPEC=$$(SPEC) at the same time. Choose one.)
-      $$(error Cannot continue)
-    endif
-    ifneq ($$(origin CONF_NAME), undefined)
-      # We also have a CONF_NAME argument. We can't have both.
-      $$(info Error: Cannot use CONF_NAME=$$(CONF_NAME) and SPEC=$$(SPEC) at the same time. Choose one.)
-      $$(error Cannot continue)
-    endif
-    ifeq ($$(wildcard $$(SPEC)), )
-      $$(info Error: Cannot locate spec.gmk, given by SPEC=$$(SPEC).)
-      $$(error Cannot continue)
-    endif
-    ifeq ($$(filter /%, $$(SPEC)), )
-      # If given with relative path, make it absolute
-      SPECS := $$(CURDIR)/$$(strip $$(SPEC))
-    else
-      SPECS := $$(SPEC)
-    endif
-
-    # For now, unset this SPEC variable.
-    override SPEC :=
-  else
-    # Use spec.gmk files in the build output directory
-    ifeq ($$(all_spec_files), )
-      ifneq ($(CUSTOM_ROOT), )
-        $$(info Error: No configurations found for $$(CUSTOM_ROOT).)
-      else
-        $$(info Error: No configurations found for $$(TOPDIR).)
-      endif
-      $$(info Please run 'bash configure' to create a configuration.)
-      $$(info )
-      $$(error Cannot continue)
-    endif
-
-    ifneq ($$(origin CONF_NAME), undefined)
-      ifneq ($$(origin CONF), undefined)
-        # We also have a CONF argument. We can't have both.
-        $$(info Error: Cannot use CONF=$$(CONF) and CONF_NAME=$$(CONF_NAME) at the same time. Choose one.)
-        $$(error Cannot continue)
-      endif
-      matching_conf := $$(strip $$(filter $$(CONF_NAME), $$(all_confs)))
-      ifeq ($$(matching_conf), )
-        $$(info Error: No configurations found matching CONF_NAME=$$(CONF_NAME).)
-        $$(info Available configurations in $$(build_dir):)
-        $$(foreach var, $$(all_confs), $$(info * $$(var)))
-        $$(error Cannot continue)
-      else ifneq ($$(words $$(matching_conf)), 1)
-        $$(info Error: Matching more than one configuration CONF_NAME=$$(CONF_NAME).)
-        $$(info Available configurations in $$(build_dir):)
-        $$(foreach var, $$(all_confs), $$(info * $$(var)))
-        $$(error Cannot continue)
-      else
-        $$(info Building configuration '$$(matching_conf)' (matching CONF_NAME=$$(CONF_NAME)))
-      endif
-      # Create a SPEC definition. This will contain the path to exactly one spec file.
-      SPECS := $$(build_dir)/$$(matching_conf)/spec.gmk
-    else ifneq ($$(origin CONF), undefined)
-      # User have given a CONF= argument.
-      ifeq ($$(CONF), )
-        # If given CONF=, match all configurations
-        matching_confs := $$(strip $$(all_confs))
-      else
-        # Otherwise select those that contain the given CONF string
-        ifeq ($$(patsubst !%,,$$(CONF)), )
-          # A CONF starting with ! means we should negate the search term
-          matching_confs := $$(strip $$(foreach var, $$(all_confs), \
-              $$(if $$(findstring $$(subst !,,$$(CONF)), $$(var)), ,$$(var))))
-        else
-          matching_confs := $$(strip $$(foreach var, $$(all_confs), \
-              $$(if $$(findstring $$(CONF), $$(var)), $$(var))))
-        endif
-        ifneq ($$(filter $$(CONF), $$(matching_confs)), )
-          ifneq ($$(word 2, $$(matching_confs)), )
-            # Don't repeat this output on make restarts caused by including
-            # generated files.
-            ifeq ($$(MAKE_RESTARTS), )
-              $$(info Using exact match for CONF=$$(CONF) (other matches are possible))
-            endif
-          endif
-          # If we found an exact match, use that
-          matching_confs := $$(CONF)
-        endif
-      endif
-      ifeq ($$(matching_confs), )
-        $$(info Error: No configurations found matching CONF=$$(CONF).)
-        $$(info Available configurations in $$(build_dir):)
-        $$(foreach var, $$(all_confs), $$(info * $$(var)))
-        $$(error Cannot continue)
-      else
-        # Don't repeat this output on make restarts caused by including
-        # generated files.
-        ifeq ($$(MAKE_RESTARTS), )
-          ifeq ($$(words $$(matching_confs)), 1)
-            ifneq ($$(findstring $$(LOG_LEVEL), info debug trace), )
-              $$(info Building configuration '$$(matching_confs)' (matching CONF=$$(CONF)))
-            endif
-          else
-            $$(info Building these configurations (matching CONF=$$(CONF)):)
-            $$(foreach var, $$(matching_confs), $$(info * $$(var)))
-          endif
-        endif
-      endif
-
-      # Create a SPEC definition. This will contain the path to one or more spec.gmk files.
-      SPECS := $$(addsuffix /spec.gmk, $$(addprefix $$(build_dir)/, $$(matching_confs)))
-    else
-      # No CONF or SPEC given, check the available configurations
-      ifneq ($$(words $$(all_spec_files)), 1)
-        $$(info Error: No CONF given, but more than one configuration found.)
-        $$(info Available configurations in $$(build_dir):)
-        $$(foreach var, $$(all_confs), $$(info * $$(var)))
-        $$(info Please retry building with CONF=<config pattern> (or SPEC=<spec file>).)
-        $$(info )
-        $$(error Cannot continue)
-      endif
-
-      # We found exactly one configuration, use it
-      SPECS := $$(strip $$(all_spec_files))
-    endif
-  endif
-endef
-
-# Extract main targets from Main.gmk using the spec provided in $2.
-#
-# Param 1: FORCE = force generation of main-targets.gmk or LAZY = do not force.
-# Param 2: The SPEC file to use.
-define DefineMainTargets
-
-  # We will start by making sure the main-targets.gmk file is removed, if
-  # make has not been restarted. By the -include, we will trigger the
-  # rule for generating the file (which is never there since we removed it),
-  # thus generating it fresh, and make will restart, incrementing the restart
-  # count.
-  main_targets_file := $$(dir $(strip $2))make-support/main-targets.gmk
-
-  ifeq ($$(MAKE_RESTARTS), )
-    # Only do this if make has not been restarted, and if we do not force it.
-    ifeq ($(strip $1), FORCE)
-      $$(shell rm -f $$(main_targets_file))
-    endif
-  endif
-
-  $$(main_targets_file):
-	@( cd $$(TOPDIR) && \
-	$$(MAKE) $$(MAKE_LOG_FLAGS) -r -R -f $$(TOPDIR)/make/Main.gmk \
-	    -I $$(TOPDIR)/make/common SPEC=$(strip $2) NO_RECIPES=true \
-	    $$(MAKE_LOG_VARS) \
-	    create-main-targets-include )
-
-  # Now include main-targets.gmk. This will define ALL_MAIN_TARGETS.
-  -include $$(main_targets_file)
-endef
-
-define PrintConfCheckFailed
-	@echo ' '
-	@echo "Please rerun configure! Easiest way to do this is by running"
-	@echo "'make reconfigure'."
-	@echo "This behavior may also be changed using CONF_CHECK=<ignore|auto>."
-	@echo ' '
-endef
-
-################################################################################

make/ReleaseFile.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2023, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,16 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
 
 ################################################################################
 # This makefile generates the "release" file into the exploded image. Jlink is
 # then responsible for using this as the base for release files in each linked
 # image.
+#
 ################################################################################
 
 BASE_RELEASE_FILE := $(JDK_OUTPUTDIR)/release
@@ -81,4 +85,10 @@ TARGETS += $(BASE_RELEASE_FILE)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+$(eval $(call IncludeCustomExtension, ReleaseFile.gmk))
+
+################################################################################
+
+all: $(TARGETS)
+
+.PHONY: all default

make/RunTests.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
+default: all
 
+include $(SPEC)
+include MakeBase.gmk
 include FindTests.gmk
 
 # We will always run multiple tests serially
@@ -71,13 +71,13 @@ ifeq ($(call isTargetOs, windows), true)
   endif
 endif
 
+################################################################################
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, RunTests.gmk))
 ################################################################################
 
 # This is the JDK that we will test
 JDK_UNDER_TEST := $(JDK_IMAGE_DIR)
-# The JDK used to compile jtreg test code. By default it is the same as
-# JDK_UNDER_TEST.
-JDK_FOR_COMPILE := $(JDK_IMAGE_DIR)
 
 TEST_RESULTS_DIR := $(OUTPUTDIR)/test-results
 TEST_SUPPORT_DIR := $(OUTPUTDIR)/test-support
@@ -108,8 +108,8 @@ ifneq ($(wildcard $(JTREG_FAILURE_HANDLER)), )
       #
 endif
 
-GTEST_LAUNCHER_DIRS := $(patsubst %/gtestLauncher$(EXECUTABLE_SUFFIX), %, \
-    $(wildcard $(TEST_IMAGE_DIR)/hotspot/gtest/*/gtestLauncher$(EXECUTABLE_SUFFIX)))
+GTEST_LAUNCHER_DIRS := $(patsubst %/gtestLauncher, %, \
+    $(wildcard $(TEST_IMAGE_DIR)/hotspot/gtest/*/gtestLauncher))
 GTEST_VARIANTS := $(strip $(patsubst $(TEST_IMAGE_DIR)/hotspot/gtest/%, %, \
     $(GTEST_LAUNCHER_DIRS)))
 
@@ -979,7 +979,6 @@ define SetupRunJtregTestBody
       $$(JTREG_JAVA) $$($1_JTREG_LAUNCHER_OPTIONS) \
           -Dprogram=jtreg -jar $$(JT_HOME)/lib/jtreg.jar \
           $$($1_JTREG_BASIC_OPTIONS) \
-          -compilejdk:$$(JDK_FOR_COMPILE) \
           -testjdk:$$(JDK_UNDER_TEST) \
           -dir:$$(JTREG_TOPDIR) \
           -reportDir:$$($1_TEST_RESULTS_DIR) \
@@ -1354,8 +1353,4 @@ endif
 
 all: run-test
 
-.PHONY: $(TARGETS)
-
-################################################################################
-
-include MakeFileEnd.gmk
+.PHONY: default all $(TARGETS)

make/RunTestsPrebuilt.gmk

@@ -24,11 +24,9 @@
 #
 
 ################################################################################
-# Initial bootstrapping, copied and stripped down from Makefile and PreInit.gmk.
+# Initial bootstrapping, copied and stripped down from Makefile and Init.gmk
 ################################################################################
 
-IS_PREINIT_ENV := true
-
 # In Cygwin, the MAKE variable gets prepended with the current directory if the
 # make executable is called using a Windows mixed path (c:/cygwin/bin/make.exe).
 ifneq ($(findstring :, $(MAKE)), )
@@ -59,7 +57,7 @@ TOPDIR := $(strip $(patsubst %/make/, %, $(dir $(makefile_path))))
 define SetupVariable
   ifeq ($$($1), )
     ifeq ($2, )
-      $$(info Error: Prebuilt variable $1 is missing, needed for test-prebuilt)
+      $$(info Error: Prebuilt variable $1 is missing, needed for run-tests-prebuilt)
       $$(error Cannot continue.)
     else ifeq ($2, OPTIONAL)
       ifneq ($$(findstring $$(LOG), info debug trace), )
@@ -137,8 +135,8 @@ $(eval $(call SetupVariable,JIB_JAR,OPTIONAL))
 # can include the prebuilt spec file ourselves, without an ephemeral spec
 # wrapper. This is required so we can include MakeBase which is needed for
 # CreateNewSpec.
-include $(TOPDIR)/make/PreInitSupport.gmk
-include $(TOPDIR)/make/common/LogUtils.gmk
+HAS_SPEC :=
+include $(TOPDIR)/make/InitSupport.gmk
 
 $(eval $(call CheckDeprecatedEnvironment))
 $(eval $(call CheckInvalidMakeFlags))
@@ -247,7 +245,7 @@ endif
 # Now we can include additional custom support.
 # This might define CUSTOM_NEW_SPEC_LINE
 ifneq ($(CUSTOM_MAKE_DIR), )
-  include $(CUSTOM_MAKE_DIR)/RunTestsPrebuilt-pre.gmk
+  include $(CUSTOM_MAKE_DIR)/RunTestsPrebuilt.gmk
 endif
 
 NEW_SPEC := $(OUTPUTDIR)/run-test-spec.gmk
@@ -297,10 +295,13 @@ test-prebuilt:
         # is unfortunately not available at this point.
 	$(call MakeDir, $(MAKESUPPORT_OUTPUTDIR)/failure-logs)
 	@$(RM) -f $(MAKESUPPORT_OUTPUTDIR)/exit-with-error
-        # We need to fill the FindTest cache before entering RunTests.gmk.
-	@cd $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) SPEC=$(SPEC) \
-	    -f RunTestsPrebuiltFindTests.gmk
-	@cd $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f RunTests.gmk run-test \
+        # The lazy initialization of the cache file in FindTests.gmk does not
+        # always work with RunTests.gmk. To guarantee that the jtreg test groups
+        # are always found and parsed, call FindTests.gmk stand alone once
+        # before calling RunTests.gmk.
+	@cd $(TOPDIR) && $(MAKE) $(MAKE_ARGS) -f make/common/FindTests.gmk \
+	    SPEC=$(SPEC) FINDTESTS_STAND_ALONE=true
+	@cd $(TOPDIR) && $(MAKE) $(MAKE_ARGS) -f make/RunTests.gmk run-test \
 	    TEST="$(TEST)"
 
 test-prebuilt-with-exit-code: test-prebuilt

make/RunTestsPrebuiltFindTests.gmk

@@ -1,38 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-include MakeFileStart.gmk
-
-################################################################################
-# This makefile is a thin wrapper around FindTests.gmk, just to make FindTest
-# fill the cache.
-################################################################################
-
-GENERATE_FIND_TESTS_FILE := true
-include FindTests.gmk
-
-################################################################################
-
-include MakeFileEnd.gmk

make/SourceRevision.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,7 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+include $(SPEC)
+include MakeBase.gmk
+
+$(eval $(call IncludeCustomExtension, SourceRevision-pre.gmk))
 
 ################################################################################
 # Keep track of what source revision is used to create the build, by creating
@@ -35,7 +38,6 @@ include MakeFileStart.gmk
 # bundle. As a part of creating this source bundle, the current SCM revisions of
 # all repos will be stored in a file in the top dir, which is then used when
 # creating the tracker file.
-################################################################################
 
 STORED_SOURCE_REVISION := $(TOPDIR)/.src-rev
 
@@ -154,6 +156,10 @@ endif
 
 ################################################################################
 
+$(eval $(call IncludeCustomExtension, SourceRevision-post.gmk))
+
+################################################################################
+
 store-source-revision: $(STORE_SOURCE_REVISION_TARGET)
 
 create-source-revision-tracker: $(CREATE_SOURCE_REVISION_TRACKER_TARGET)
@@ -161,7 +167,3 @@ create-source-revision-tracker: $(CREATE_SOURCE_REVISION_TRACKER_TARGET)
 FRC: # Force target
 
 .PHONY: store-source-revision create-source-revision-tracker
-
-################################################################################
-
-include MakeFileEnd.gmk

make/StaticLibs.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,9 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
 
-################################################################################
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include DebugInfoUtils.gmk
@@ -66,8 +67,10 @@ else ifeq ($(call isTargetOs, windows), true)
   BROKEN_STATIC_LIBS += splashscreen
   # libsspi_bridge has name conflicts with sunmscapi
   BROKEN_STATIC_LIBS += sspi_bridge
-  # dt_shmem define jdwpTransport_OnLoad which conflict with dt_socket
-  BROKEN_STATIC_LIBS += dt_shmem
+  # These libs define DllMain which conflict with Hotspot
+  BROKEN_STATIC_LIBS += awt dt_shmem dt_socket
+  # These libs are dependent on any of the above disabled libs
+  BROKEN_STATIC_LIBS += fontmanager jawt lcms net nio
 endif
 
 $(foreach module, $(STATIC_LIB_MODULES), \
@@ -104,8 +107,7 @@ else
 endif
 
 $(eval $(call SetupBuildLauncher, java, \
-    ENABLE_ARG_FILES := true, \
-    EXPAND_CLASSPATH_WILDCARDS := true, \
+    CFLAGS := -DEXPAND_CLASSPATH_WILDCARDS -DENABLE_ARG_FILES, \
     EXTRA_RCFLAGS := $(JAVA_RCFLAGS), \
     VERSION_INFO_RESOURCE := $(JAVA_VERSION_INFO_RESOURCE), \
     OPTIMIZATION := HIGH, \
@@ -184,8 +186,6 @@ static-jdk-image: $(copy-from-jdk-image) $(copy-static-launcher) $(copy-static-l
 
 TARGETS += static-jdk-image
 
-.PHONY: static-launcher static-jdk-image
+all: $(TARGETS)
 
-################################################################################
-
-include MakeFileEnd.gmk
+.PHONY: all static-launcher static-jdk-image

make/StaticLibsImage.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,12 +23,13 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
 # This makefile creates an image of the optional static versions of certain JDK
 # libraries.
-################################################################################
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
 
 include CopyFiles.gmk
 include Modules.gmk
@@ -37,6 +38,8 @@ ALL_MODULES = $(call FindAllModules)
 
 ################################################################################
 
+TARGETS :=
+
 ifneq ($(filter static-libs-image, $(MAKECMDGOALS)), )
   IMAGE_DEST_DIR = $(STATIC_LIBS_IMAGE_DIR)/lib
 else ifneq ($(filter static-libs-graal-image, $(MAKECMDGOALS)), )
@@ -69,9 +72,11 @@ ifneq ($(filter static-libs-image, $(MAKECMDGOALS)), )
   )
 endif
 
+################################################################################
+
 static-libs-image: $(HOTSPOT_VARIANT_STATIC_LIBS_TARGETS) $(STATIC_LIBS_TARGETS)
 static-libs-graal-image: $(STATIC_LIBS_TARGETS)
 
-################################################################################
+all: $(TARGETS)
 
-include MakeFileEnd.gmk
+.PHONY: all

make/TestImage.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,7 +23,13 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, TestImage-pre.gmk))
 
 ################################################################################
 
@@ -48,8 +54,4 @@ TARGETS += $(BUILD_INFO_PROPERTIES) $(README)
 prepare-test-image: $(TARGETS)
 all: prepare-test-image
 
-.PHONY: prepare-test-image
-
-################################################################################
-
-include MakeFileEnd.gmk
+.PHONY: default all prepare-test-image

make/ToolsHotspot.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,8 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
-################################################################################
+ifndef _TOOLS_HOTSPOT_GMK
+_TOOLS_HOTSPOT_GMK := 1
 
 include JavaCompilation.gmk
 
@@ -46,5 +44,4 @@ TOOL_JFR_GEN := $(JAVA_SMALL) -cp $(HOTSPOT_TOOLS_OUTPUTDIR) \
 
 ################################################################################
 
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _TOOLS_HOTSPOT_GMK

make/ToolsJdk.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,13 +23,14 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
-################################################################################
+ifndef _TOOLS_GMK
+_TOOLS_GMK := 1
 
 include JavaCompilation.gmk
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, Tools.gmk))
+
 ################################################################################
 # To avoid reevaluating the compilation setup for the tools each time this file
 # is included, the actual compilation is handled by CompileTools.gmk. The
@@ -136,5 +137,7 @@ PANDOC_HTML_MANPAGE_FILTER := $(BUILDTOOLS_OUTPUTDIR)/manpages/pandoc-html-manpa
 
 ################################################################################
 
-endif # include guard
-include MakeIncludeEnd.gmk
+# Hook to include the corresponding custom post file, if present.
+$(eval $(call IncludeCustomExtension, ToolsJdk-post.gmk))
+
+endif # _TOOLS_GMK

make/ToolsLangtools.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,11 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
+# This must be the first rule
+default: all
 
+include $(SPEC)
+include MakeBase.gmk
 include JavaCompilation.gmk
 
 ################################################################################
@@ -42,7 +43,3 @@ $(eval $(call SetupJavaCompilation, BUILD_TOOLS_LANGTOOLS, \
 ))
 
 all: $(BUILD_TOOLS_LANGTOOLS)
-
-################################################################################
-
-include MakeFileEnd.gmk

make/UpdateBuildDocs.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,14 +23,17 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+include ProcessMarkdown.gmk
 
 ################################################################################
 # This makefile updates the generated build html documentation.
+#
 ################################################################################
 
-include ProcessMarkdown.gmk
-
 ifeq ($(ENABLE_PANDOC), false)
   $(info No pandoc executable was detected by configure)
   $(error Cannot continue)
@@ -52,4 +55,10 @@ TARGETS += $(md_docs)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+$(eval $(call IncludeCustomExtension, UpdateBuildDocs.gmk))
+
+################################################################################
+
+all: $(TARGETS)
+
+.PHONY: all default

make/UpdateSleefSource.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,7 +23,15 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+################################################################################
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
+include CopyFiles.gmk
+include Execute.gmk
 
 ################################################################################
 # This file is responsible for updating the generated sleef source code files
@@ -32,9 +40,6 @@ include MakeFileStart.gmk
 # updated from upstream.
 ################################################################################
 
-include CopyFiles.gmk
-include Execute.gmk
-
 ifneq ($(COMPILE_TYPE), cross)
   $(error Only cross-compilation of libsleef is currently supported)
 endif
@@ -143,4 +148,6 @@ TARGETS := $(copy_generated_sleef_source)
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all default

make/UpdateX11Wrappers.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,7 +23,15 @@
 # questions.
 #
 
-include MakeFileStart.gmk
+################################################################################
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+include Execute.gmk
+include JdkNativeCompilation.gmk
+include ToolsJdk.gmk
 
 ################################################################################
 # This file is responsible for extracting the x11 native struct offsets to
@@ -35,10 +43,6 @@ include MakeFileStart.gmk
 # GensrcX11Wrappers.gmk to generate the Java code during the build.
 ################################################################################
 
-include Execute.gmk
-include JdkNativeCompilation.gmk
-include $(TOPDIR)/make/ToolsJdk.gmk
-
 ifeq ($(COMPILE_TYPE), cross)
   $(error It is not possible to update the x11wrappers when cross-compiling)
 endif
@@ -104,4 +108,6 @@ TARGETS += $(run_wrappergen) wrapper-information
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: all default

make/ZipSecurity.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,10 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
+default: all
 
+include $(SPEC)
+include MakeBase.gmk
 include ZipArchive.gmk
 
 ################################################################################
@@ -100,4 +100,6 @@ endif
 
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: default all

make/ZipSource.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,16 +23,19 @@
 # questions.
 #
 
-include MakeFileStart.gmk
-
-################################################################################
+default: all
 
+include $(SPEC)
+include MakeBase.gmk
 include Modules.gmk
 include ZipArchive.gmk
 
 SRC_ZIP_WORK_DIR := $(SUPPORT_OUTPUTDIR)/src
 $(if $(filter $(TOPDIR)/%, $(SUPPORT_OUTPUTDIR)), $(eval SRC_ZIP_BASE := $(TOPDIR)), $(eval SRC_ZIP_BASE := $(SUPPORT_OUTPUTDIR)))
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, ZipSource.gmk))
+
 ################################################################################
 # Create the directory structure for src.zip using symlinks.
 # <module>/<package>/<file>.java
@@ -92,8 +95,8 @@ zip: $(SRC_ZIP_SRCS)
 
 TARGETS += zip
 
-.PHONY: zip
-
 ################################################################################
 
-include MakeFileEnd.gmk
+all: $(TARGETS)
+
+.PHONY: default all zip

make/autoconf/basic.m4

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -84,15 +84,9 @@ AC_DEFUN_ONCE([BASIC_SETUP_PATHS],
 
   # We get the top-level directory from the supporting wrappers.
   BASIC_WINDOWS_VERIFY_DIR($TOPDIR, source)
-  orig_topdir="$TOPDIR"
   UTIL_FIXUP_PATH(TOPDIR)
   AC_MSG_CHECKING([for top-level directory])
   AC_MSG_RESULT([$TOPDIR])
-  if test "x$TOPDIR" != "x$orig_topdir"; then
-    AC_MSG_WARN([Your top dir was originally represented as $orig_topdir,])
-    AC_MSG_WARN([but after rewriting it became $TOPDIR.])
-    AC_MSG_WARN([This typically means you have characters like space in the path, which can cause all kind of trouble.])
-  fi
   AC_SUBST(TOPDIR)
 
   if test "x$CUSTOM_ROOT" != x; then
@@ -624,10 +618,4 @@ AC_DEFUN_ONCE([BASIC_POST_CONFIG_OUTPUT],
 
   # Make the compare script executable
   $CHMOD +x $OUTPUTDIR/compare.sh
-
-  # Copy the linker wrapper script for clang on AIX and make it executable
-  if test "x$TOOLCHAIN_TYPE" = xclang && test "x$OPENJDK_TARGET_OS" = xaix; then
-    $CP -f "$TOPDIR/make/scripts/aix/ld.sh" "$OUTPUTDIR/ld.sh"
-    $CHMOD +x "$OUTPUTDIR/ld.sh"
-  fi
 ])

make/autoconf/flags-cflags.m4

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -235,10 +235,9 @@ AC_DEFUN([FLAGS_SETUP_WARNINGS],
       CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
 
       # Additional warnings that are not activated by -Wall and -Wextra
-      WARNINGS_ENABLE_ADDITIONAL="-Winvalid-pch -Wpointer-arith -Wreturn-type \
-          -Wsign-compare -Wtrampolines -Wtype-limits -Wundef -Wuninitialized \
-          -Wunused-const-variable=1 -Wunused-function -Wunused-result \
-          -Wunused-value"
+      WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wreturn-type -Wsign-compare \
+          -Wtrampolines -Wundef -Wunused-const-variable=1 -Wunused-function \
+          -Wunused-result -Wunused-value -Wtype-limits -Wuninitialized"
       WARNINGS_ENABLE_ADDITIONAL_CXX="-Woverloaded-virtual -Wreorder"
       WARNINGS_ENABLE_ALL_CFLAGS="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL"
       WARNINGS_ENABLE_ALL_CXXFLAGS="$WARNINGS_ENABLE_ALL_CFLAGS $WARNINGS_ENABLE_ADDITIONAL_CXX"
@@ -278,7 +277,7 @@ AC_DEFUN([FLAGS_SETUP_WARNINGS],
 AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS],
 [
   # bounds, memory and behavior checking options
-  if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
+  if test "x$TOOLCHAIN_TYPE" = xgcc; then
     case $DEBUG_LEVEL in
     release )
       # no adjustment
@@ -347,7 +346,7 @@ AC_DEFUN([FLAGS_SETUP_OPTIMIZATION],
     C_O_FLAG_DEBUG="-Od"
     C_O_FLAG_DEBUG_JVM=""
     C_O_FLAG_NONE="-Od"
-    C_O_FLAG_SIZE="-O1"
+    C_O_FLAG_SIZE="-Os"
   fi
 
   # Now copy to C++ flags
@@ -517,6 +516,12 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
         -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer"
   fi
 
+  if test "x$TOOLCHAIN_TYPE" = xclang && test "x$OPENJDK_TARGET_OS" = xaix; then
+    # clang compiler on aix needs -ffunction-sections
+    TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -ffunction-sections -ftls-model -fno-math-errno -fstack-protector"
+    TOOLCHAIN_CFLAGS_JDK="-ffunction-sections -fsigned-char -fstack-protector"
+  fi
+
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fstack-protector"
     TOOLCHAIN_CFLAGS_JDK="-fvisibility=hidden -pipe -fstack-protector"
@@ -536,7 +541,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
     # Restrict the debug information created by Clang to avoid
     # too big object files and speed the build up a little bit
     # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
-    TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info -fstack-protector"
+    TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info"
 
     # In principle the stack alignment below is cpu- and ABI-dependent and
     # should agree with values of StackAlignmentInBytes in various
@@ -554,19 +559,13 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
       TOOLCHAIN_CFLAGS_JDK="-pipe"
       TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX
     fi
-
-    if test "x$OPENJDK_TARGET_OS" = xaix; then
-      TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -ffunction-sections -ftls-model -fno-math-errno"
-      TOOLCHAIN_CFLAGS_JDK="-ffunction-sections -fsigned-char"
-    fi
-
-    TOOLCHAIN_CFLAGS_JDK="$TOOLCHAIN_CFLAGS_JDK -fvisibility=hidden -fstack-protector"
+    TOOLCHAIN_CFLAGS_JDK="$TOOLCHAIN_CFLAGS_JDK -fvisibility=hidden"
 
   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     # The -utf-8 option sets source and execution character sets to UTF-8 to enable correct
     # compilation of all source files regardless of the active code page on Windows.
-    TOOLCHAIN_CFLAGS_JVM="-nologo -MD -Zc:preprocessor -Zc:inline -Zc:throwingNew -permissive- -utf-8 -MP"
-    TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:preprocessor -Zc:inline -Zc:throwingNew -permissive- -utf-8 -Zc:wchar_t-"
+    TOOLCHAIN_CFLAGS_JVM="-nologo -MD -Zc:preprocessor -Zc:inline -permissive- -utf-8 -MP"
+    TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:preprocessor -Zc:inline -permissive- -utf-8 -Zc:wchar_t-"
   fi
 
   # CFLAGS C language level for JDK sources (hotspot only uses C++)
@@ -719,7 +718,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
       elif test "x$FLAGS_CPU" = xppc64le; then
         # Little endian machine uses ELFv2 ABI.
         # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
-        $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power10"
+        $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8"
       fi
     elif test "x$FLAGS_CPU" = xs390x; then
       $1_CFLAGS_CPU="-mbackchain -march=z10"
@@ -737,11 +736,6 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
         # for all archs except arm and ppc, prevent gcc to omit frame pointer
         $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
       fi
-      if test "x$FLAGS_CPU" = xppc64le; then
-        # Little endian machine uses ELFv2 ABI.
-        # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
-        $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power10"
-      fi
     fi
     if test "x$OPENJDK_TARGET_OS" = xaix; then
       $1_CFLAGS_CPU="-mcpu=pwr8"
@@ -836,22 +830,6 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
 
   FLAGS_SETUP_BRANCH_PROTECTION
 
-  if test "x$FLAGS_CPU" = xriscv64; then
-    AC_MSG_CHECKING([if RVV/vector sigcontext supported])
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <linux/ptrace.h>],
-        [
-          return (int)sizeof(struct __riscv_v_ext_state);
-        ])],
-        [
-          AC_MSG_RESULT([yes])
-        ],
-        [
-          $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -DNO_RVV_SIGCONTEXT"
-          AC_MSG_RESULT([no])
-        ]
-    )
-  fi
-
   # EXPORT to API
   CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM \
       $TOOLCHAIN_CFLAGS_JVM ${$1_TOOLCHAIN_CFLAGS_JVM} \

make/autoconf/flags-ldflags.m4

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -79,7 +79,7 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
     fi
     if test "x$OPENJDK_TARGET_OS" = xaix; then
       BASIC_LDFLAGS="-Wl,-b64 -Wl,-brtl -Wl,-bnorwexec -Wl,-bnolibpath -Wl,-bnoexpall \
-        -Wl,-bernotok -Wl,-bdatapsize:64k -Wl,-btextpsize:64k -Wl,-bstackpsize:64k -fuse-ld=$OUTPUTDIR/ld.sh"
+        -Wl,-bernotok -Wl,-bdatapsize:64k -Wl,-btextpsize:64k -Wl,-bstackpsize:64k"
       BASIC_LDFLAGS_JVM_ONLY="$BASIC_LDFLAGS_JVM_ONLY -Wl,-lC_r -Wl,-bbigtoc"
     fi
 
@@ -197,8 +197,8 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_CPU_DEP],
   $2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \
       ${$1_CPU_EXECUTABLE_LDFLAGS} $REPRODUCIBLE_LDFLAGS $FILE_MACRO_LDFLAGS"
 
-  $2LDFLAGS_STATIC_JDK="$BASIC_LDFLAGS $OS_LDFLAGS ${$2EXTRA_LDFLAGS} \
-      $REPRODUCIBLE_LDFLAGS $FILE_MACRO_LDFLAGS"
+  $2LDFLAGS_STATIC_JDK="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY \
+      $OS_LDFLAGS ${$2EXTRA_LDFLAGS} $REPRODUCIBLE_LDFLAGS $FILE_MACRO_LDFLAGS"
 
   $2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS $OS_LDFLAGS_JVM_ONLY \
       $DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY \

make/autoconf/jdk-options.m4

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -471,7 +471,6 @@ AC_DEFUN_ONCE([JDKOPT_SETUP_ADDRESS_SANITIZER],
           fi
           if test "x$TOOLCHAIN_TYPE" = "xclang"; then
             ASAN_CFLAGS="$ASAN_CFLAGS -fsanitize-address-use-after-return=never"
-            ASAN_LDFLAGS="$ASAN_LDFLAGS -shared-libasan"
           fi
         elif test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
           # -Oy- is equivalent to -fno-omit-frame-pointer in GCC/Clang.
@@ -541,11 +540,10 @@ AC_DEFUN_ONCE([JDKOPT_SETUP_UNDEFINED_BEHAVIOR_SANITIZER],
       OPTIONAL: true)
 
   # GCC reports lots of likely false positives for stringop-truncation and format-overflow.
-  # GCC 13 also for array-bounds and stringop-overflow
   # Silence them for now.
   UBSAN_CHECKS="-fsanitize=undefined -fsanitize=float-divide-by-zero -fno-sanitize=shift-base -fno-sanitize=alignment \
       $ADDITIONAL_UBSAN_CHECKS"
-  UBSAN_CFLAGS="$UBSAN_CHECKS -Wno-stringop-truncation -Wno-format-overflow -Wno-array-bounds -Wno-stringop-overflow -fno-omit-frame-pointer -DUNDEFINED_BEHAVIOR_SANITIZER"
+  UBSAN_CFLAGS="$UBSAN_CHECKS -Wno-stringop-truncation -Wno-format-overflow -fno-omit-frame-pointer -DUNDEFINED_BEHAVIOR_SANITIZER"
   UBSAN_LDFLAGS="$UBSAN_CHECKS"
   UTIL_ARG_ENABLE(NAME: ubsan, DEFAULT: false, RESULT: UBSAN_ENABLED,
       DESC: [enable UndefinedBehaviorSanitizer],

make/autoconf/lib-hsdis.m4

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -40,9 +40,6 @@ AC_DEFUN([LIB_SETUP_HSDIS_CAPSTONE],
     HSDIS_CFLAGS="-I${CAPSTONE}/include/capstone"
     if test "x$OPENJDK_TARGET_OS" != xwindows; then
       HSDIS_LDFLAGS="-L${CAPSTONE}/lib"
-      if test "x$OPENJDK_TARGET_CPU_BITS" = "x64" ; then
-        HSDIS_LDFLAGS="-L${CAPSTONE}/lib64 $HSDIS_LDFLAGS"
-      fi
       HSDIS_LIBS="-lcapstone"
     else
       HSDIS_LDFLAGS="-nodefaultlib:libcmt.lib"

make/autoconf/lib-wayland.m4

@@ -86,12 +86,6 @@ AC_DEFUN_ONCE([LIB_SETUP_WAYLAND],
     else
         WAYLAND_PROTOCOLS_ROOT=/usr/share/wayland-protocols/
     fi
-    AC_MSG_CHECKING([for wayland-protocols])
-    if test -d "$WAYLAND_PROTOCOLS_ROOT"; then
-      AC_MSG_RESULT([yes])
-    else
-      AC_MSG_ERROR([Can't find 'wayland-protocols' under $WAYLAND_PROTOCOLS_ROOT.])
-    fi
     GTK_SHELL1_PROTOCOL_PATH=
     if test "x${with_gtk_shell1_protocol}" != x && test "x${with_gtk_shell1_protocol}" != xno; then
       AC_MSG_CHECKING([for the gtk-shell1 Wayland protocol])
@@ -154,7 +148,7 @@ AC_DEFUN_ONCE([LIB_SETUP_WAYLAND],
         VULKAN_FOUND=no
 
         if test "x${with_vulkan_include}" != x; then
-          AC_MSG_CHECKING([for ${with_vulkan_include}/vulkan/vulkan.h])
+          AC_MSG_CHECKING([for vulkan.h])
           if test -s "${with_vulkan_include}/vulkan/vulkan.h"; then
             VULKAN_FOUND=yes
             VULKAN_FLAGS="-DVK_USE_PLATFORM_WAYLAND_KHR -I${with_vulkan_include} -DVULKAN_ENABLED"
@@ -165,15 +159,14 @@ AC_DEFUN_ONCE([LIB_SETUP_WAYLAND],
           fi
         fi
 
-        if test "x$VULKAN_FOUND" = xno && test "x${VULKAN_SDK}" != x; then
-          AC_MSG_CHECKING([for ${VULKAN_SDK}/include/vulkan/vulkan.h])
-          if test -s "${VULKAN_SDK}/include/vulkan/vulkan.h"; then
-            VULKAN_FOUND=yes
-            VULKAN_FLAGS="-DVK_USE_PLATFORM_WAYLAND_KHR -I${VULKAN_SDK}/include -DVULKAN_ENABLED"
-            AC_MSG_RESULT([yes])
-          else
-            AC_MSG_RESULT([no])
-          fi
+        if test "x$VULKAN_FOUND" = xno; then
+          # Check vulkan sdk location
+          AC_CHECK_HEADERS([$VULKAN_SDK/include/vulkan/vulkan.h],
+            [ VULKAN_FOUND=yes
+              VULKAN_FLAGS="-DVK_USE_PLATFORM_WAYLAND_KHR -I${VULKAN_SDK}/include -DVULKAN_ENABLED"
+            ],
+            [ VULKAN_FOUND=no; break ]
+          )
         fi
 
         if test "x$VULKAN_FOUND" = xno; then

make/autoconf/util_paths.m4

@@ -77,10 +77,7 @@ AC_DEFUN([UTIL_FIXUP_PATH],
           imported_path=""
         fi
       fi
-      [ imported_path_lower=`$ECHO $imported_path | $TR '[:upper:]' '[:lower:]'` ]
-      [ orig_path_lower=`$ECHO $path | $TR '[:upper:]' '[:lower:]'` ]
-      # If only case differs, keep original path
-      if test "x$imported_path_lower" != "x$orig_path_lower"; then
+      if test "x$imported_path" != "x$path"; then
         $1="$imported_path"
       fi
     else
@@ -360,8 +357,6 @@ AC_DEFUN([UTIL_SETUP_TOOL],
           fi
           $1="$tool_command"
         fi
-        # Make sure we add fixpath if needed
-        UTIL_FIXUP_EXECUTABLE($1)
         if test "x$tool_args" != x; then
           # If we got arguments, re-append them to the command after the fixup.
           $1="[$]$1 $tool_args"

make/common/CopyFiles.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,11 +23,14 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including CopyFiles.gmk)
+endif
 
 ################################################################################
+#
 # Code for handling the SetupCopyFiles macro.
+#
 ################################################################################
 
 define AddFileToCopy
@@ -107,8 +110,3 @@ define SetupCopyFilesBody
   )
 
 endef
-
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk

make/common/DebugInfoUtils.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,11 +23,14 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including DebugInfoUtils.gmk)
+endif
 
 ################################################################################
+#
 # Common debuginfo utility functions
+#
 ################################################################################
 
 ################################################################################
@@ -53,6 +56,3 @@ else
         $(if $(wildcard $1), $(call containing, .dSYM/, $(call FindFiles, $1)))
   endif
 endif
-
-endif # include guard
-include MakeIncludeEnd.gmk

make/common/Execute.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,13 +23,17 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including Execute.gmk)
+endif
 
 ################################################################################
+#
 # Code for handling the SetupExecute macro.
+#
 ################################################################################
 
+
 ################################################################################
 # Setup make rules for executing an arbitrary command.
 #
@@ -192,8 +196,3 @@ define SetupExecuteBody
   $1_TARGET := $$($1_FINAL_RESULT)
 
 endef
-
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk

make/common/FileUtils.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,11 +23,14 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including FileUtils.gmk)
+endif
 
 ################################################################################
+#
 # Common file utility functions
+#
 ################################################################################
 
 ################################################################################
@@ -304,8 +307,3 @@ ifeq ($(DISABLE_CACHE_FIND), true)
 else
   FindFiles = $(CacheFindFiles)
 endif
-
-################################################################################
-
-include MakeIncludeEnd.gmk
-endif # include guard

make/common/FindTests.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,21 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifndef _FIND_TESTS_GMK
+_FIND_TESTS_GMK := 1
 
-################################################################################
+# This makefile can be called directly to just trigger generation of the cache
+# makefile. If so, SPEC and MakeBase.gmk need to be included.
+ifeq ($(FINDTESTS_STAND_ALONE), true)
+  include $(SPEC)
+  include MakeBase.gmk
+endif
+
+# Make sure this variable is not lazy evaled.
+ALL_NAMED_TESTS :=
+
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, common/FindTests.gmk))
 
 # TEST_BASEDIRS might have been set by a custom extension
 TEST_BASEDIRS += $(TOPDIR)/test $(TOPDIR)
@@ -92,5 +103,4 @@ ALL_NAMED_TESTS += failure-handler make
 
 ################################################################################
 
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _FIND_TESTS_GMK

make/common/JarArchive.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,12 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifndef _JAR_ARCHIVE_GMK
+_JAR_ARCHIVE_GMK := 1
 
-################################################################################
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including JarArchive.gmk)
+endif
 
 include MakeIO.gmk
 
@@ -281,7 +283,4 @@ define SetupJarArchiveBody
   $1 += $$($1_JAR)
 endef
 
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _JAR_ARCHIVE_GMK

make/common/JavaCompilation.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,15 +23,19 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifndef _JAVA_COMPILATION_GMK
+_JAVA_COMPILATION_GMK := 1
 
-################################################################################
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including JavaCompilation.gmk)
+endif
 
 include MakeIO.gmk
 
-# Java compilation needs SetupJarArchive if we're generating a jar file
+# Java compilation needs SetupJarArchive and/or SetupZipArchive, if we're
+# generating a jar file or a source zip.
 include JarArchive.gmk
+include ZipArchive.gmk
 
 ###
 ### Definitions for common release targets
@@ -152,6 +156,7 @@ endef
 #   COPY_FILES myapp/foo/setting.txt means copy this file over to the package myapp/foo
 #   CLEAN .properties means copy and clean all properties file to the corresponding package in BIN.
 #   CLEAN_FILES myapp/foo/setting.txt means clean this file over to the package myapp/foo
+#   SRCZIP Create a src.zip based on the found sources and copied files.
 #   INCLUDE_FILES "com/sun/SolarisFoobar.java" means only compile this file!
 #   EXCLUDE_FILES "com/sun/SolarisFoobar.java" means do not compile this particular file!
 #       "SolarisFoobar.java" means do not compile SolarisFoobar, wherever it is found.
@@ -534,6 +539,19 @@ define SetupJavaCompilationBody
       # Add jar to target list
       $1 += $$($1_JAR)
     endif
+
+    # Check if a srczip was specified, then setup the rules for the srczip.
+    ifneq ($$($1_SRCZIP), )
+      $$(eval $$(call SetupZipArchive, ZIP_ARCHIVE_$1, \
+          SRC := $$($1_SRC), \
+          ZIP := $$($1_SRCZIP), \
+          INCLUDES := $$($1_INCLUDES), \
+          EXCLUDES := $$($1_EXCLUDES), \
+          EXCLUDE_FILES := $$($1_EXCLUDE_FILES)))
+
+      # Add zip to target list
+      $1 += $$($1_SRCZIP)
+    endif
   endif # Source files found
 endef
 
@@ -548,7 +566,4 @@ SetupJavaCompilationCompileTarget = \
 SetupJavaCompilationApiTarget = \
     $(strip $2)/_the.$(strip $1)_pubapi
 
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _JAVA_COMPILATION_GMK

make/common/JdkNativeCompilation.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,13 +23,18 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifndef _JDK_NATIVE_COMPILATION_GMK
+_JDK_NATIVE_COMPILATION_GMK := 1
 
-################################################################################
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including JdkNativeCompilation.gmk)
+endif
 
 include NativeCompilation.gmk
 
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, common/JdkNativeCompilation.gmk))
+
 FindSrcDirsForComponent += \
   $(call uniq, $(wildcard \
       $(TOPDIR)/src/$(strip $1)/$(OPENJDK_TARGET_OS)/native/$(strip $2) \
@@ -261,9 +266,6 @@ JDK_RCFLAGS=$(RCFLAGS) \
 #     will be replaced with proper values for hotspot.
 #   HEADERS_FROM_SRC -- if false, does not add source dirs automatically as
 #     header include dirs. (Defaults to true.)
-#   JAVA_HEADERS -- if false, does not add the directory with the generated
-#     headers from the Java compilation of the current module to the search
-#     path for include files. (Defaults to true.)
 #   JDK_LIBS -- libraries generated by the JDK build system to link against.
 #     These take the form <module>:<basename>. For the current module, the
 #     module name and colon can be omitted. The basename should be specified
@@ -383,9 +385,7 @@ define SetupJdkNativeCompilationBody
 
   # Add the module specific java header dir
   ifneq ($$(MODULE), )
-    ifneq ($$($1_JAVA_HEADERS), false)
-      $1_SRC_HEADER_FLAGS += $$(addprefix -I, $$(call GetJavaHeaderDir, $$(MODULE)))
-    endif
+    $1_SRC_HEADER_FLAGS += $$(addprefix -I, $$(call GetJavaHeaderDir, $$(MODULE)))
   endif
 
   $1_JDK_LIBS += $$($1_JDK_LIBS_$$(OPENJDK_TARGET_OS))
@@ -494,7 +494,4 @@ define SetupJdkExecutableBody
   $$(eval $$(call SetupJdkNativeCompilation, $1))
 endef
 
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _JDK_NATIVE_COMPILATION_GMK

make/common/LogUtils.gmk

@@ -1,138 +0,0 @@
-#
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-include $(TOPDIR)/make/common/MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
-################################################################################
-# This file contains helper functions for logging.
-################################################################################
-
-# Look for a given option in the LOG variable, and if found, set a variable
-# and remove the option from the LOG variable
-# $1: The option to look for
-# $2: The variable to set to "true" if the option is found
-define ParseLogOption
-  ifneq ($$(findstring $1, $$(LOG)), )
-    override $2 := true
-    # First try to remove ",<option>" if it exists, otherwise just remove "<option>"
-    LOG_STRIPPED := $$(subst $1,, $$(subst $$(COMMA)$$(strip $1),, $$(LOG)))
-    # We might have ended up with a leading comma. Remove it. Need override
-    # since LOG is set from the command line.
-    override LOG := $$(strip $$(patsubst $$(COMMA)%, %, $$(LOG_STRIPPED)))
-  endif
-endef
-
-# Look for a given option with an assignment in the LOG variable, and if found,
-# set a variable to that value and remove the option from the LOG variable
-# $1: The option to look for
-# $2: The variable to set to the value of the option, if found
-define ParseLogValue
-  ifneq ($$(findstring $1=, $$(LOG)), )
-    # Make words of out comma-separated list and find the one with opt=val
-    value := $$(strip $$(subst $$(strip $1)=,, $$(filter $$(strip $1)=%, $$(subst $$(COMMA), , $$(LOG)))))
-    override $2 := $$(value)
-    # First try to remove ",<option>" if it exists, otherwise just remove "<option>"
-    LOG_STRIPPED := $$(subst $$(strip $1)=$$(value),, \
-        $$(subst $$(COMMA)$$(strip $1)=$$(value),, $$(LOG)))
-    # We might have ended up with a leading comma. Remove it. Need override
-    # since LOG is set from the command line.
-    override LOG := $$(strip $$(patsubst $$(COMMA)%, %, $$(LOG_STRIPPED)))
-  endif
-endef
-
-define ParseLogLevel
-  # Catch old-style VERBOSE= command lines.
-  ifneq ($$(origin VERBOSE), undefined)
-    $$(info Error: VERBOSE is deprecated. Use LOG=<warn|info|debug|trace> instead.)
-    $$(error Cannot continue)
-  endif
-
-  # Setup logging according to LOG
-
-  # If "nofile" is present, do not log to a file
-  $$(eval $$(call ParseLogOption, nofile, LOG_NOFILE))
-
-  # If "cmdline" is present, print all executes "important" command lines.
-  $$(eval $$(call ParseLogOption, cmdlines, LOG_CMDLINES))
-
-  # If "report" is present, use non-standard reporting options at build failure.
-  $$(eval $$(call ParseLogValue, report, LOG_REPORT))
-  ifneq ($$(LOG_REPORT), )
-    ifeq ($$(filter $$(LOG_REPORT), none all default), )
-      $$(info Error: LOG=report has invalid value: $$(LOG_REPORT).)
-      $$(info Valid values: LOG=report=<none>|<all>|<default>)
-      $$(error Cannot continue)
-    endif
-  endif
-
-  # If "profile-to-log" is present, write shell times in build log
-  $$(eval $$(call ParseLogOption, profile-to-log, LOG_PROFILE_TIMES_LOG))
-
-  # If "profile" is present, write shell times in separate log file
-  # IMPORTANT: $(ParseLogOption profile-to-log) should go first. Otherwise
-  # parsing of 'LOG=debug,profile-to-log,nofile' ends up in the following error:
-  # Error: LOG contains unknown option or log level: debug-to-log.
-  $$(eval $$(call ParseLogOption, profile, LOG_PROFILE_TIMES_FILE))
-
-  # If "flow" is present, log makefile execution flow
-  $$(eval $$(call ParseLogOption, flow, LOG_FLOW))
-
-  # Treat LOG=profile-to-log as if it were LOG=profile,profile-to-log
-  LOG_PROFILE_TIMES_FILE := $$(firstword $$(LOG_PROFILE_TIMES_FILE) $$(LOG_PROFILE_TIMES_LOG))
-
-  override LOG_LEVEL := $$(LOG)
-
-  ifeq ($$(LOG_LEVEL), )
-    # Set LOG to "warn" as default if not set
-    override LOG_LEVEL := warn
-  endif
-
-  ifeq ($$(LOG_LEVEL), warn)
-    override MAKE_LOG_FLAGS := -s
-  else ifeq ($$(LOG_LEVEL), info)
-    override MAKE_LOG_FLAGS := -s
-  else ifeq ($$(LOG_LEVEL), debug)
-    override MAKE_LOG_FLAGS :=
-  else ifeq ($$(LOG_LEVEL), trace)
-    override MAKE_LOG_FLAGS :=
-  else
-    $$(info Error: LOG contains unknown option or log level: $$(LOG).)
-    $$(info LOG can be <level>[,<opt>[...]] where <opt> is nofile | cmdlines | profile | profile-to-log)
-    $$(info and <level> is warn | info | debug | trace)
-    $$(error Cannot continue)
-  endif
-endef
-
-MAKE_LOG_VARS = $(foreach v, \
-    LOG_LEVEL LOG_NOFILE LOG_CMDLINES LOG_REPORT LOG_PROFILE_TIMES_LOG \
-    LOG_PROFILE_TIMES_FILE LOG_FLOW, \
-    $v=$($v) \
-)
-
-################################################################################
-
-endif # include guard
-include $(TOPDIR)/make/common/MakeIncludeEnd.gmk

make/common/MakeBase.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,11 +23,6 @@
 # questions.
 #
 
-MAKEBASE_INCLUDED := true
-
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
 ################################################################################
 # MakeBase provides the core functionality needed and used by all makefiles. It
 # should be included by all makefiles. MakeBase provides essential
@@ -35,6 +30,13 @@ ifeq ($(INCLUDE), true)
 # execution, logging and fixpath functionality.
 ################################################################################
 
+ifndef _MAKEBASE_GMK
+_MAKEBASE_GMK := 1
+
+ifeq ($(wildcard $(SPEC)), )
+  $(error MakeBase.gmk needs SPEC set to a proper spec.gmk)
+endif
+
 # By defining this pseudo target, make will automatically remove targets
 # if their recipe fails so that a rebuild is automatically triggered on the
 # next make invocation.
@@ -310,5 +312,7 @@ ExecuteWithLog = \
 
 ################################################################################
 
-include MakeIncludeEnd.gmk
-endif # include guard
+# Hook to include the corresponding custom file, if present.
+$(eval $(call IncludeCustomExtension, common/MakeBase.gmk))
+
+endif # _MAKEBASE_GMK

make/common/MakeFileEnd.gmk

@@ -1,42 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# MakeFileEnd.gmk should be included last of all in all top-level makefiles
-################################################################################
-
-# Hook to include the corresponding custom file, if present.
-ifneq ($(NO_CUSTOM_EXTENSIONS), true)
-  CUSTOM_POST_NAME := $(subst .gmk,-post.gmk, $(THIS_MAKEFILE))
-  $(eval $(call IncludeCustomExtension, $(CUSTOM_POST_NAME)))
-endif
-
-all: $(TARGETS)
-
-ifeq ($(LOG_FLOW), true)
-  $(info :Leave $(THIS_MAKEFILE) [now executing rules])
-endif
-
-.PHONY: default all

make/common/MakeFileStart.gmk

@@ -1,66 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# MakeFileStart.gmk should be included first of all in all top-level makefiles
-################################################################################
-
-# This must be the first rule
-default: $(if $(DEFAULT_TARGET), $(DEFAULT_TARGET), all)
-
-THIS_MAKEFILE_PATH := $(firstword $(MAKEFILE_LIST))
-
-ifeq ($(SPEC), )
-  $(error $(THIS_MAKEFILE_PATH): SPEC is not set)
-endif
-
-ifeq ($(wildcard $(SPEC)), )
-  $(error $(THIS_MAKEFILE_PATH): spec.gmk file $(SPEC) is missing)
-endif
-
-ifneq ($(words $(MAKEFILE_LIST)), 2)
-  $(error $(THIS_MAKEFILE_PATH): This file is not supposed to be included)
-endif
-
-# We need spec.gmk to get $(TOPDIR)
-include $(SPEC)
-
-THIS_MAKEFILE := $(patsubst make/%,%,$(patsubst $(TOPDIR)/%,%,$(THIS_MAKEFILE_PATH)))
-
-ifeq ($(LOG_FLOW), true)
-  $(info :Enter $(THIS_MAKEFILE))
-endif
-
-include $(TOPDIR)/make/common/MakeBase.gmk
-
-TARGETS :=
-
-all:
-
-# Hook to include the corresponding custom file, if present.
-ifneq ($(NO_CUSTOM_EXTENSIONS), true)
-  CUSTOM_PRE_NAME := $(subst .gmk,-pre.gmk, $(THIS_MAKEFILE))
-  $(eval $(call IncludeCustomExtension, $(CUSTOM_PRE_NAME)))
-endif

make/common/MakeIO.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,14 +23,18 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including MakeIO.gmk)
+endif
 
 ################################################################################
+#
 # Functions for dealing with reading and writing from makefiles. Prior to GNU
 # Make 4.0, this was tricky business.
+#
 ################################################################################
 
+
 ################################################################################
 # ListPathsSafely can be used to print command parameters to a file. This is
 # typically done if the command line length risk being too long for the
@@ -237,8 +241,3 @@ else # HAS_FILE_FUNCTION = false
     $$(call ListPathsSafely_IfPrintf,$1,$2,29751,30000)
   endef
 endif # HAS_FILE_FUNCTION
-
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk

make/common/MakeIncludeEnd.gmk

@@ -1,45 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# MakeIncludeEnd.gmk should be included last of all in all include files
-################################################################################
-
-# Hook to include the corresponding custom file, if present.
-ifneq ($(NO_CUSTOM_EXTENSIONS), true)
-  CUSTOM_POST_NAME := $(subst .gmk,-post.gmk, $(THIS_INCLUDE))
-  $(eval $(call IncludeCustomExtension, $(CUSTOM_POST_NAME)))
-endif
-
-# Pop our helper name off the stack
-HELPER_STACK := $(wordlist 2, $(words $(HELPER_STACK)), $(HELPER_STACK))
-
-# Print an indented message, also counting the top-level makefile as a level
-ifeq ($(LOG_FLOW), true)
-  $(info :$(foreach s, top $(HELPER_STACK),    )Leave $(THIS_INCLUDE))
-endif
-
-# Restore the previous helper name
-THIS_INCLUDE := $(firstword $(HELPER_STACK))

make/common/MakeIncludeStart.gmk

@@ -1,83 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# MakeIncludeStart.gmk should be included first of all in all include files
-################################################################################
-
-# Get the next to last word (by prepending a padding element)
-THIS_INCLUDE_PATH := $(word $(words ${MAKEFILE_LIST}),padding ${MAKEFILE_LIST})
-THIS_INCLUDE := $(patsubst $(TOPDIR)/make/%,%,$(THIS_INCLUDE_PATH))
-
-# Print an indented message, also counting the top-level makefile as a level
-ifneq ($(INCLUDE_GUARD_$(THIS_INCLUDE)), true)
-  THIS_INCLUDE_MSG := include
-else
-  THIS_INCLUDE_MSG := included already
-endif
-
-ifeq ($(LOG_FLOW), true)
-  $(info :$(foreach s, top $(HELPER_STACK),    )Enter $(THIS_INCLUDE) [$(THIS_INCLUDE_MSG)])
-endif
-
-ifneq ($(filter $(THIS_INCLUDE), $(HELPER_STACK)), )
-  $(error Internal makefile error: Include loop detected: $(THIS_INCLUDE) $(HELPER_STACK))
-endif
-
-ifeq ($(words $(MAKEFILE_LIST)), 2)
-  $(error $(THIS_INCLUDE_PATH): This file is supposed to be included)
-endif
-
-# In a preinit environment, we do not have any SPEC
-ifneq ($(IS_PREINIT_ENV), true)
-  ifeq ($(SPEC), )
-    $(error $(THIS_INCLUDE_PATH): SPEC is not set)
-  endif
-
-  ifeq ($(wildcard $(SPEC)), )
-    $(error $(THIS_INCLUDE_PATH): spec.gmk file $(SPEC) is missing)
-  endif
-
-  ifneq ($(MAKEBASE_INCLUDED), true)
-    $(error $(THIS_INCLUDE_PATH): MakeBase.gmk is not included)
-  endif
-endif
-
-# Push our helper name onto the stack
-HELPER_STACK := $(THIS_INCLUDE) $(HELPER_STACK)
-
-# Setup an automatic include guard
-ifneq ($(INCLUDE_GUARD_$(THIS_INCLUDE)), true)
-  INCLUDE_GUARD_$(THIS_INCLUDE) := true
-  INCLUDE := true
-
-  # Hook to include the corresponding custom file, if present.
-  ifneq ($(NO_CUSTOM_EXTENSIONS), true)
-    CUSTOM_PRE_NAME := $(subst .gmk,-pre.gmk, $(THIS_INCLUDE))
-    $(eval $(call IncludeCustomExtension, $(CUSTOM_PRE_NAME)))
-  endif
-else
-  INCLUDE := false
-endif

make/common/MakeSnippetEnd.gmk

@@ -1,45 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# MakeSnippetEnd.gmk should be included after including a makefile snippet
-################################################################################
-
-# Hook to include the corresponding custom file, if present.
-ifneq ($(NO_CUSTOM_EXTENSIONS), true)
-  CUSTOM_POST_NAME := $(subst .gmk,-post.gmk, $(THIS_SNIPPET))
-  $(eval $(call IncludeCustomExtension, $(CUSTOM_POST_NAME)))
-endif
-
-# Pop our helper name off the stack
-HELPER_STACK := $(wordlist 2, $(words $(HELPER_STACK)), $(HELPER_STACK))
-
-# Print an indented message, also counting the top-level makefile as a level
-ifeq ($(LOG_FLOW), true)
-  $(info :$(foreach s, top $(HELPER_STACK),    )Leave $(THIS_SNIPPET))
-endif
-
-# Restore the previous helper name
-THIS_SNIPPET := $(firstword $(HELPER_STACK))

make/common/MakeSnippetStart.gmk

@@ -1,46 +0,0 @@
-#
-# Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-################################################################################
-# MakeSnippetStart.gmk should be included before including a makefile snippet
-################################################################################
-
-ifeq ($(THIS_SNIPPET), )
-  $(error Internal makefile error: THIS_SNIPPET is not defined)
-endif
-
-# Print an indented message, also counting the top-level makefile as a level
-ifeq ($(LOG_FLOW), true)
-  $(info :$(foreach s, top $(HELPER_STACK),    )Enter $(THIS_SNIPPET) [snippet])
-endif
-
-# Push our helper name onto the stack
-HELPER_STACK := $(THIS_SNIPPET) $(HELPER_STACK)
-
-# Hook to include the corresponding custom file, if present.
-ifneq ($(NO_CUSTOM_EXTENSIONS), true)
-  CUSTOM_PRE_NAME := $(subst .gmk,-pre.gmk, $(THIS_SNIPPET))
-  $(eval $(call IncludeCustomExtension, $(CUSTOM_PRE_NAME)))
-endif

make/common/Modules.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,8 +23,8 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifndef _MODULES_GMK
+_MODULES_GMK := 1
 
 ################################################################################
 # Setup module sets for classloaders
@@ -45,6 +45,11 @@ include $(TOPDIR)/make/conf/docs-modules.conf
 
 include $(TOPDIR)/make/conf/build-module-sets.conf
 
+################################################################################
+# Hook to include the corresponding custom file, if present.
+# Allowing MODULE list extensions setup above.
+$(eval $(call IncludeCustomExtension, common/Modules.gmk))
+
 ################################################################################
 # Depending on the configuration, we might need to filter out some modules that
 # normally should have been included
@@ -87,7 +92,7 @@ SRC_SUBDIRS += share/classes
 
 SPEC_SUBDIRS += share/specs
 
-MAN_SUBDIRS += share/man windows/man
+MAN_SUBDIRS += share/man
 
 # Find all module-info.java files for the current build target platform and
 # configuration.
@@ -309,5 +314,4 @@ endef
 
 ################################################################################
 
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _MODULES_GMK

make/common/NativeCompilation.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,15 +23,19 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
 ################################################################################
 # This is the top-level entry point for our native compilation and linking.
 # It contains the SetupNativeCompilation macro, but is supported by helper
 # macros in the make/common/native directory.
 ################################################################################
 
+ifndef _NATIVE_COMPILATION_GMK
+_NATIVE_COMPILATION_GMK := 1
+
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including NativeCompilation.gmk)
+endif
+
 include MakeIO.gmk
 include native/CompileFile.gmk
 include native/DebugSymbols.gmk
@@ -219,7 +223,6 @@ define SetupNativeCompilationBody
   ifeq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)
     # Override all targets (this is a hack)
     $1 := $$($1_ALL_OBJS_JSON) $$($1_LDFLAGS_FILE)
-    TARGETS := $(filter $(MAKESUPPORT_OUTPUTDIR)/compile-commands/%, $(TARGETS))
   endif
 endef
 
@@ -406,7 +409,4 @@ define ImportDependencyFile
   endif
 endef
 
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _NATIVE_COMPILATION_GMK

make/common/ProcessMarkdown.gmk

@@ -1,4 +1,4 @@
-# Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -22,10 +22,9 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
-
-################################################################################
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including ProcessMarkdown.gmk)
+endif
 
 include TextFileProcessing.gmk
 
@@ -182,8 +181,3 @@ define SetupProcessMarkdownBody
     )
   endif
 endef
-
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk

make/common/TestFilesCompilation.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2015, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2015, 2024, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -23,10 +23,13 @@
 # questions.
 #
 
-include MakeIncludeStart.gmk
-ifeq ($(INCLUDE), true)
+ifndef _TEST_FILES_COMPILATION_GMK
+_TEST_FILES_COMPILATION_GMK := 1
+
+ifeq ($(_MAKEBASE_GMK), )
+  $(error You must include MakeBase.gmk prior to including TestFilesCompilation.gmk)
+endif
 
-################################################################################
 
 include JdkNativeCompilation.gmk
 
@@ -139,7 +142,4 @@ define SetupTestFilesCompilationBody
 
 endef
 
-################################################################################
-
-endif # include guard
-include MakeIncludeEnd.gmk
+endif # _TEST_FILES_COMPILATION_GMK