On 6/17/22 11:08, Nathan Chancellor wrote: > When clang is invoked without a '--target' flag, code is generated for > the default target, which is usually the host (it is configurable via > cmake). As a result, the has-stack-protector scripts will generate code > for the default target but check for x86 specific segment registers, > which cannot succeed if the default target is not x86. I guess the real root cause here is the direct use of '$(CC)' without any other flags. Adding '$(CLANG_FLAGS)' seems like a pretty normal fix, like in scripts/Kconfig.include. I suspect there's another one of these here: arch/x86/um/vdso/Makefile: cmd_vdso = $(CC) -nostdlib -o $@ but I wouldn't be surprised if UML doesn't work with clang in the first place.
