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Date: Thu, 30 Aug 2018 05:31:08 -0700 From: tip-bot for Ben Hutchings <tipbot@...or.com> To: linux-tip-commits@...r.kernel.org Cc: tglx@...utronix.de, ben@...adent.org.uk, hpa@...or.com, linux-kernel@...r.kernel.org, helmutg@...ian.org, mingo@...nel.org Subject: [tip:x86/urgent] x86: Allow generating user-space headers without a compiler Commit-ID: 3c76014d27e97bd641202007744fb37c18743adf Gitweb: https://git.kernel.org/tip/3c76014d27e97bd641202007744fb37c18743adf Author: Ben Hutchings <ben@...adent.org.uk> AuthorDate: Wed, 29 Aug 2018 20:43:17 +0100 Committer: Thomas Gleixner <tglx@...utronix.de> CommitDate: Thu, 30 Aug 2018 14:28:19 +0200 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@...ian.org> Signed-off-by: Ben Hutchings <ben@...adent.org.uk> Signed-off-by: Thomas Gleixner <tglx@...utronix.de> Cc: stable@...r.kernel.org Link: https://lkml.kernel.org/r/20180829194317.GA4765@decadent.org.uk --- arch/x86/Makefile | 11 +++++++---- 1 file 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
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