On Thu, Feb 07, 2019 at 02:01:51PM -0800, ndesaulniers@xxxxxxxxxx wrote: > This is needed because clang doesn't select which linker to use based on > $LD but rather -fuse-ld=$(LD). This is problematic especially for > cc-ldoption, which checks for linker flag support via invoking the > compiler, rather than the linker. > > Link: https://github.com/ClangBuiltLinux/linux/issues/342 > Suggested-by: Nathan Chancellor <natechancellor@xxxxxxxxx> > Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> > --- > Makefile | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Makefile b/Makefile > index 0eae4277206e..6307c17259ea 100644 > --- a/Makefile > +++ b/Makefile > @@ -502,6 +502,9 @@ endif > CLANG_FLAGS += -no-integrated-as > KBUILD_CFLAGS += $(CLANG_FLAGS) > KBUILD_AFLAGS += $(CLANG_FLAGS) > +ifneq ($(shell $(LD) --version 2>&1 | head -n 1 | grep LLD),) > +CLANG_FLAGS += -fuse-ld=lld > +endif This section needs to be moved up above KBUILD_CFLAGS otherwise it never actually gets passed along. With that change, please add: Reviewed-by: Nathan Chancellor <natechancellor@xxxxxxxxx> Tested-by: Nathan Chancellor <natechancellor@xxxxxxxxx> > export CLANG_FLAGS > endif > > -- > 2.20.1.791.gb4d0f1c61a-goog >
