Commit 35f860f9 authored Feb 03, 2017 by David Lin Committed by Linus Torvalds Feb 03, 2017

jump label: pass kbuild_cflags when checking for asm goto support

Some versions of ARM GCC compiler such as Android toolchain throws in a
'-fpic' flag by default.  This causes the gcc-goto check script to fail
although some config would have '-fno-pic' flag in the KBUILD_CFLAGS.

This patch passes the KBUILD_CFLAGS to the check script so that the
script does not rely on the default config from different compilers.

Link: http://lkml.kernel.org/r/20170120234329.78868-1-dtwlin@google.com


Signed-off-by: David Lin <dtwlin@google.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Michal Marek <mmarek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 253fd0f0

Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -797,7 +797,7 @@ KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types)
		KBUILD_ARFLAGS := $(call ar-option,D)

		# check for 'asm goto'
		ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
		ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
		KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
		KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
		endif

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