[PATCH v2 1/5] x86/boot/compressed: prefer cc-option for CFLAGS additions

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We have an issue where as-option is testing new options with accumulated
CFLAGS. This makes it so that we can't use as-option to update AFLAGS
since many CFLAGS aren't valid AFLAGS. This is being fixed in a follow
up patch. Before doing so, move the assembler test for
-Wa,-mrelax-relocations=no from using as-option to cc-option.

Cc: Arvind Sankar <nivedita@xxxxxxxxxxxx>
Cc: x86@xxxxxxxxxx
Link: https://lore.kernel.org/llvm/CAK7LNATcHt7GcXZ=jMszyH=+M_LC9Qr6yeAGRCBbE6xriLxtUQ@xxxxxxxxxxxxxx/
Suggested-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
---
Changes v1 -> v2:
* Split off of v1 [1/3].
* Use cc-option to update CFLAGS, as per Masahiro.
* Add Masahiro's Suggested-by, Cc Arvind.

 arch/x86/boot/compressed/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 35ce1a64068b..85934204d905 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -49,7 +49,7 @@ KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 KBUILD_CFLAGS += -D__DISABLE_EXPORTS
 # Disable relocation relaxation in case the link is not PIE.
-KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mrelax-relocations=no)
+KBUILD_CFLAGS += $(call cc-option,-Wa$(comma)-mrelax-relocations=no)
 KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h
 
 # sev.c indirectly inludes inat-table.h which is generated during
-- 
2.37.2.672.g94769d06f0-goog




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