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| author | Ben Hutchings <ben@decadent.org.uk> | 2018-08-29 21:43:17 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-08-31 17:08:22 +0200 |
| commit | 829fe4aa9ac16417a904ad1de1307de906854bcf (patch) | |
| tree | 88ce51cc7bcf33e82882aec78a7f2e2350a7608e /arch/x86 | |
| parent | x86/dumpstack: Don't dump kernel memory based on usermode RIP (diff) | |
| download | linux-829fe4aa9ac16417a904ad1de1307de906854bcf.tar.xz linux-829fe4aa9ac16417a904ad1de1307de906854bcf.zip | |
x86: Allow generating user-space headers without a compiler
When bootstrapping an architecture, it's usual to generate the kernel's
user-space headers (make headers_install) before building a compiler. Move
the compiler check (for asm goto support) to the archprepare target so that
it is only done when building code for the target.
Fixes: e501ce957a78 ("x86: Force asm-goto")
Reported-by: Helmut Grohne <helmutg@debian.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180829194317.GA4765@decadent.org.uk
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Makefile | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 8fc8f94ef5f5..8f6e7eb8ae9f 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -175,10 +175,6 @@ ifdef CONFIG_FUNCTION_GRAPH_TRACER endif endif -ifndef CC_HAVE_ASM_GOTO - $(error Compiler lacks asm-goto support.) -endif - ifeq ($(ACCUMULATE_OUTGOING_ARGS), 1) # This compiler flag is not supported by Clang: KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args,) @@ -300,6 +296,13 @@ PHONY += vdso_install vdso_install: $(Q)$(MAKE) $(build)=arch/x86/entry/vdso $@ +archprepare: checkbin +checkbin: +ifndef CC_HAVE_ASM_GOTO + @echo Compiler lacks asm-goto support. + @exit 1 +endif + archclean: $(Q)rm -rf $(objtree)/arch/i386 $(Q)rm -rf $(objtree)/arch/x86_64 |