BACKPORT: FROMLIST: Makefile: lld: tell clang to use lld

This is needed because clang doesn't select which linker to use based on $LD but rather -fuse-ld=lld. This is problematic especially for cc-ldoption, which checks for linker flag support via invoking the compiler, rather than the linker. (am from https://lkml.org/lkml/2019/2/11/1947) Bug: 63740206 Change-Id: I3edf2f0f6c0bac842bef22194bd48a993fc0e3c0 Link: ClangBuiltLinux/linux#342 Suggested-by: Nathan Chancellor <[email protected]> Reviewed-by: Nathan Chancellor <[email protected]> Tested-by: Nathan Chancellor <[email protected]> Signed-off-by: Nick Desaulniers <[email protected]>
hisi-oss · Feb 6, 2025 · e1c89b0 · e1c89b0
1 parent 93b575e
commit e1c89b0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/Makefile b/Makefile
@@ -609,6 +609,9 @@ endif
 # Use make W=1 to enable them (see scripts/Makefile.build)
 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
+ifneq ($(LLVM),)
+KBUILD_CFLAGS += -fuse-ld=lld
+endif
 
 ifeq ($(mixed-targets),1)
 # ===========================================================================