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[CMake] install clang and other resource headers into `CLANG_RESOURCE_DIR/include` if `CLANG_RESOURCE_DIR` is not empty

Authored by paperchalice on Sep 25 2022, 2:25 AM.



When CLANG_RESOURCE_DIR is not empty, clang will look up builtin headers in CLANG_RESOURCE_DIR/include, this patch makes sure resource headers are installed into the correct location.
Resolve issue #57708.

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paperchalice created this revision.Sep 25 2022, 2:25 AM
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paperchalice requested review of this revision.Sep 25 2022, 2:25 AM
phosek added inline comments.Sep 26 2022, 11:47 PM

The property we maintain is that the build directory layout matches the installation directory which makes it possible to use the toolchain without having to install it first.

I believe we need to set the output_dir depending on the value of CLANG_RESOURCE_DIR as well to preserve that behavior.


nit: can we use if ... else?

Update the output_dir.

phosek accepted this revision.Sep 27 2022, 2:12 AM


This revision is now accepted and ready to land.Sep 27 2022, 2:12 AM

If it is ready to land, could you commit this change? I don't have commit right, thanks.

Let other projects consider CLANG_RESOURCE_DIR too.

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paperchalice retitled this revision from [CMake] install clang resource headers into `CLANG_RESOURCE_DIR/include` if `CLANG_RESOURCE_DIR` is not empty to [CMake] install clang and other resource headers into `CLANG_RESOURCE_DIR/include` if `CLANG_RESOURCE_DIR` is not empty.Oct 18 2022, 2:31 AM

Ping @phosek, but may need suggestions from other reviewers...
Thanks in advance if someone can commit this change.


Should support CLANG_RESOURCE_DIR in standalone mode?

paperchalice abandoned this revision.Oct 26 2022, 6:35 PM