Change Details

Currently libclang_rt is not provided for cross-building and as such is not connected to cross-tools. For building clang once in universe it is likely that libclang_rt won't exist for the universe toolchain but even if it did it would not support anything but the native arch. So explicitly check for support before enabling h_raw. For building clang once in universe I do a 'make kernel-toolchain' with a separate objdir. This never runs 'make libraries' so lib/libclang_rt is never compiled. Even if we connect that to cross-tools though I think a check like done in this diff would be needed here, or globally.

Currently libclang_rt is not provided for cross-building and as such is not connected to cross-tools. For building clang once in universe it is likely that libclang_rt won't exist for the universe toolchain but even if it did it would not support anything but the native arch. So explicitly check for support before enabling h_raw. For building clang once in universe I do a 'make kernel-toolchain' with a separate objdir. This never runs 'make libraries' so lib/libclang_rt is never compiled. Even if we connect that to cross-tools though I think a check like done in this diff would be needed here, or globally. Trying to resolve this failure: ``` --- h_raw.full --- /scratch/obj/root/git/freebsd/freebsd12-amd64/tmp/usr/bin/ld: error: cannot open /scratch/obj/root/git/freebsd/freebsd12-amd64/tmp/usr/lib/clang/6.0.0/lib/freebsd/libclang_rt.ubsan_standalone-x86_64.a: No such file or directory cc : error: linker command failed with exit code 1 (use -v to see invocation) ```

Currently libclang_rt is not provided for cross-building and as such is not connected to cross-tools. For building clang once in universe it is likely that libclang_rt won't exist for the universe toolchain but even if it did it would not support anything but the native arch. So explicitly check for support before enabling h_raw. For building clang once in universe I do a 'make kernel-toolchain' with a separate objdir. This never runs 'make libraries' so lib/libclang_rt is never compiled. Even if we connect that to cross-tools though I think a check like done in this diff would be needed here, or globally. Trying to resolve this failure: ``` --- h_raw.full --- /scratch/obj/root/git/freebsd/freebsd12-amd64/tmp/usr/bin/ld: error: cannot open /scratch/obj/root/git/freebsd/freebsd12-amd64/tmp/usr/lib/clang/6.0.0/lib/freebsd/libclang_rt.ubsan_standalone-x86_64.a: No such file or directory cc : error: linker command failed with exit code 1 (use -v to see invocation) ```