From 76d8dd2705a091078c871dff2024953749606dd0 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Fri, 17 May 2019 17:32:20 +0200 Subject: [PATCH] x86: cover for clang's lack of support of -mpreferred-stack-boundary= While clang supposedly supports -mstack-alignment= instead, I'm not using that alternative here due to being uncertain whether that's indeed an exact equivalent of the gcc option. Only make use of the option entirely conditional for now. Reported-by: Andrew Cooper Signed-off-by: Jan Beulich Acked-by: Andrew Cooper --- xen/arch/x86/efi/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/efi/Makefile b/xen/arch/x86/efi/Makefile index f223ef058e..4bc0a196e9 100644 --- a/xen/arch/x86/efi/Makefile +++ b/xen/arch/x86/efi/Makefile @@ -7,7 +7,8 @@ boot.init.o: buildid.o EFIOBJ := boot.init.o compat.o runtime.o -$(EFIOBJ): CFLAGS-stack-boundary := -mpreferred-stack-boundary=4 +$(call cc-option-add,cflags-stack-boundary,CC,-mpreferred-stack-boundary=4) +$(EFIOBJ): CFLAGS-stack-boundary := $(cflags-stack-boundary) obj-y := stub.o obj-$(XEN_BUILD_EFI) := $(EFIOBJ) relocs-dummy.o -- 2.30.2