linux-kernel - [PATCH RESEND] jump label: pass kbuild_cflags when checking for asm goto support

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Message-Id: <20170120234329.78868-1-dtwlin@google.com>
Date:   Fri, 20 Jan 2017 15:43:29 -0800
From:   David Lin <dtwlin@...gle.com>
To:     Michal Marek <mmarek@...e.com>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        jbaron@...mai.com, will.deacon@....com, rostedt@...dmis.org,
        gregkh@...uxfoundation.org, joelaf@...gle.com,
        David Lin <dtwlin@...gle.com>
Subject: [PATCH RESEND] 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.

Signed-off-by: David Lin <dtwlin@...gle.com>
Acked-by: Steven Rostedt <rostedt@...dmis.org>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 5f1a84735ff6..c5dec246b4ab 100644
--- a/Makefile
+++ b/Makefile
@@ -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
-- 
2.11.0.483.g087da7b7c-goog