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8296904: Improve handling of macos xcode toolchain

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Reviewed-by: erikj, ihse
This commit is contained in:
Christoph Langer
2022-11-23 07:08:00 +00:00
parent b4bd287f73
commit 470f3424fc
3 changed files with 80 additions and 54 deletions
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doc/building.md
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@@ -316,12 +316,12 @@ ongoing efforts to loosen this strict coupling between compiler and operating
system (see [JDK-8288293](https://bugs.openjdk.org/browse/JDK-8288293)) but it
will likely be a very long time before this goal can be realized.
Operating system Supported toolchain
------------------ -------------------------
Linux gcc, clang
macOS Apple Xcode (using clang)
AIX IBM XL C/C++
Windows Microsoft Visual Studio
| Operating system | Supported toolchain |
| ------------------ | ------------------------- |
| Linux | gcc, clang |
| macOS | Apple Xcode (using clang) |
| AIX | IBM XL C/C++ |
| Windows | Microsoft Visual Studio |
Please see the individual sections on the toolchains for version
recommendations. As a reference, these versions of the toolchains are used, at
@@ -330,11 +330,11 @@ possible to compile the JDK with both older and newer versions, but the closer
you stay to this list, the more likely you are to compile successfully without
issues.
Operating system Toolchain version
------------------ -------------------------------------------------------
Linux gcc 11.2.0
macOS Apple Xcode 10.1 (using clang 10.0.0)
Windows Microsoft Visual Studio 2022 update 17.1.0
| Operating system | Toolchain version |
| ------------------ | ------------------------------------------ |
| Linux | gcc 11.2.0 |
| macOS | Apple Xcode 10.1 (using clang 10.0.0) |
| Windows | Microsoft Visual Studio 2022 update 17.1.0 |
All compilers are expected to be able to compile to the C99 language standard,
as some C99 features are used in the source code. Microsoft Visual Studio
@@ -362,20 +362,20 @@ To use clang instead of gcc on Linux, use `--with-toolchain-type=clang`.
The oldest supported version of Xcode is 8.
You will need the Xcode command lines developers tools to be able to build
the JDK. (Actually, *only* the command lines tools are needed, not the IDE.)
You will need the Xcode command line developer tools to be able to build
the JDK. (Actually, *only* the command line tools are needed, not the IDE.)
The simplest way to install these is to run:
```
xcode-select --install
```
It is advisable to keep an older version of Xcode for building the JDK when
updating Xcode. This [blog page](
http://iosdevelopertips.com/xcode/install-multiple-versions-of-xcode.html) has
good suggestions on managing multiple Xcode versions. To use a specific version
of Xcode, use `xcode-select -s` before running `configure`, or use
`--with-toolchain-path` to point to the version of Xcode to use, e.g.
`configure --with-toolchain-path=/Applications/Xcode8.app/Contents/Developer/usr/bin`
When updating Xcode, it is advisable to keep an older version for building the JDK.
To use a specific version of Xcode you have multiple options:
* Use `xcode-select -s` before running `configure`, e.g. `xcode-select -s /Applications/Xcode13.1.app`. The drawback is that the setting
is system wide and you may have to revert it after an OpenJDK build.
* Use configure option `--with-xcode-path`, e.g. `configure --with-xcode-path=/Applications/Xcode13.1.app`
This allows using a specific Xcode version for an OpenJDK build, independently of the active Xcode version by `xcode-select`.
If you have recently (inadvertently) updated your OS and/or Xcode version, and
the JDK can no longer be built, please see the section on [Problems with the