LoongArch: Drop -ffreestanding from CFLAGS

As explained by Nick in the original issue: the kernel usually does a good job of providing library helpers that have similar semantics as their ordinary userspace libc equivalents, but -ffreestanding disables such libcall optimization and other related features in the compiler, which can lead to unexpected things such as CONFIG_FORTIFY_SOURCE not working (!). As it turns out to be the case, removing the flag does not impact the LoongArch kernel's normal operation at all; so just remove it to restore expected libcall semantics globally on this architecture. Closes: ClangBuiltLinux#1897 Reported-by: Nathan Chancellor <[email protected]> Suggested-by: Nick Desaulniers <[email protected]> Signed-off-by: WANG Xuerui <[email protected]>
intel-lab-lkp · Aug 4, 2023 · cba9c07 · cba9c07
1 parent c1a515d
commit cba9c07
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
@@ -83,7 +83,6 @@ KBUILD_CFLAGS_KERNEL		+= -fPIE
 LDFLAGS_vmlinux			+= -static -pie --no-dynamic-linker -z notext
 endif
 
-cflags-y += -ffreestanding
 cflags-y += $(call cc-option, -mno-check-zero-division)
 
 load-y		= 0x9000000000200000