From 9fbed27a7a1101c926718dfa9b49aff1d04477b5 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Sat, 5 Mar 2022 21:56:05 +0900 Subject: kbuild: add --target to correctly cross-compile UAPI headers with Clang When you compile-test UAPI headers (CONFIG_UAPI_HEADER_TEST=y) with Clang, they are currently compiled for the host target (likely x86_64) regardless of the given ARCH=. In fact, some exported headers include libc headers. For example, include/uapi/linux/agpgart.h includes after being exported. The header search paths should match to the target we are compiling them for. Pick up the --target triple from KBUILD_CFLAGS in the same ways as commit 7f58b487e9ff ("kbuild: make Clang build userprogs for target architecture"). Signed-off-by: Masahiro Yamada Reviewed-by: Nathan Chancellor Reviewed-by: Nick Desaulniers --- usr/include/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'usr') diff --git a/usr/include/Makefile b/usr/include/Makefile index ac206fb27c65..4215801e1110 100644 --- a/usr/include/Makefile +++ b/usr/include/Makefile @@ -10,7 +10,7 @@ UAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration # In theory, we do not care -m32 or -m64 for header compile tests. # It is here just because CONFIG_CC_CAN_LINK is tested with -m32 or -m64. -UAPI_CFLAGS += $(filter -m32 -m64, $(KBUILD_CFLAGS)) +UAPI_CFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) # USERCFLAGS might contain sysroot location for CC. UAPI_CFLAGS += $(USERCFLAGS) -- cgit