Fix build on non-x86_64 Linux#321
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abrown merged 1 commit intoWebAssembly:mainfrom Jun 9, 2023
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It looks like some macOS-specific CMake options to LLVM end up forcing an x86_64 build of some blake3 intrinsics (or something like that) which causes the build to fail on AArch64 Linux, for example. I found, though, that when removing these options it was then possible to build a toolchain for AArch64 Linux.
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Is this the same issue that is coming up in #236? I wonder if we should link to a bug here, or at least a comment. Seems like a upstream llvm bug in the build system. |
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Yes I believe it's the same issue. |
abrown
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abrown
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In WebAssembly#321, some OSX-specific `Makefile` additions to `LLVM_CMAKE_FLAGS` were skipped unless `make` is run on a Darwin OS. This allowed building wasi-sdk for aarch64. But, as reported in WebAssembly#336, this also broke arm64/x86_64 universal binaries that are built during CI. The reason for this is that CI's `main.yml` overrides `LLVM_CMAKE_FLAGS` to add caching but `make` will not append to a variable set on the command line. This changes uses the `override` keyword to append to such a variable, as suggested [here]. [here]: https://www.gnu.org/software/make/manual/html_node/Override-Directive.html
abrown
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In #321, some OSX-specific `Makefile` additions to `LLVM_CMAKE_FLAGS` were skipped unless `make` is run on a Darwin OS. This allowed building wasi-sdk for aarch64. But, as reported in #336, this also broke arm64/x86_64 universal binaries that are built during CI. The reason for this is that CI's `main.yml` overrides `LLVM_CMAKE_FLAGS` to add caching but `make` will not append to a variable set on the command line. This changes uses the `override` keyword to append to such a variable, as suggested [here]. [here]: https://www.gnu.org/software/make/manual/html_node/Override-Directive.html
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It looks like some macOS-specific CMake options to LLVM end up forcing an x86_64 build of some blake3 intrinsics (or something like that) which causes the build to fail on AArch64 Linux, for example. I found, though, that when removing these options it was then possible to build a toolchain for AArch64 Linux.