Make init-compiler.sh fall back to and work with generic compiler #14756
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CI run to show that this works on macos as well: dotnet/runtime#100828 |
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I have made one major change from the previous version of this PR (#14696). I did some testing on macOS, and it looks like only the version-less |
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cc @akoeplinger @am11 @janvorli @tmds @jakubch1 any chance you can test to confirm this doesn't break anything for you? |
akoeplinger
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May 13, 2024
If a version-specific compiler (eg, clang-17) is passed to the script, it works as before. And like before, if a generic compiler (eg clang) is passed to the script, it prefers to find and use the few specific/known/tested versions of compilers (eg, clang means use clang-18 if possible). However, unlike before, if none of those specific known versions are found, it correctly falls back to the generic compiler binary (eg clang) in $PATH. The script was actually supposed to do all this already, but it seems to have been broken when warning messages were added. These warning messages were parsed by msbuild. Msbuild would see the warning messages and fail the build. With a generic compiler, this script now also invokes it via $compiler -dumpversion (which works on both clang and gcc) to find the version for various (existing) version checks. The compiler was already being invoked to check if -fuse-ld=lld is supported. Fixes: dotnet#14632
Co-authored-by: Adeel Mujahid <[email protected]>
We just need the actual path to commands, not any error/warning messages.
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I don't have merge powers, can someone please merge this for me? |
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If a version-specific compiler (eg, clang-17) is passed to the script, it works as before. And like before, if a generic compiler (eg clang) is passed to the script, it prefers to find and use the few specific/known/tested versions of compilers (eg, clang means use clang-18 if possible). However, unlike before, if none of those specific known versions are found, it correctly falls back to the generic compiler binary (eg clang) in $PATH.
The script was actually supposed to do all this already, but it seems to have been broken when warning messages were added. These warning messages were parsed by msbuild. Msbuild would see the warning messages and fail the build.
With a generic compiler, this script now also invokes it via $compiler -dumpversion (which works on both clang and gcc) to find the version for various (existing) version checks. The compiler was already being invoked to check if -fuse-ld=lld is supported.
Fixes: #14632