nickdesaulniers added a comment. In D99556#2657509 <https://reviews.llvm.org/D99556#2657509>, @MaskRay wrote:
> gcc does not understand options in `-Wa,` so `-Wa,--version` needs to be used > this way: `gcc -Wa,--version -c -x assembler /dev/null -o /dev/null` > The verbose syntax makes it not that useful. If the kernel really wants to > use it, I have no issue with it. I agree; the kernel only uses the compiler as the driver for assembler sources, as the kernel assembler is almost entirely `-x assembler-with-cpp`, so the C pre processor must be run first over the sources. This is done to share important constants like the `PAGE_SIZE` between C and assembler. For this reason, the maintainer of the kernel build system (Kbuild) would prefer to detect assembler version via `$(CC) -Wa,--version`. @jcai19 would you mind adding a test like clang/test/Driver/version.c? clang/test/Driver/version.s perhaps? Testing that there is some output from `-Wa,--version` might be helpful. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D99556/new/ https://reviews.llvm.org/D99556 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
