From: Vineet Gupta <vgupta@synopsys.com>
Date: Thu, 21 Mar 2013 06:52:06 +0000 (+0530)
Subject: ARC: [build] silence make defconfig warnings with host gcc 4.7
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=af4c3ae3990bb5a2f0a53c7112c9d7696a3cab95;p=openwrt%2Fstaging%2Fblogic.git

ARC: [build] silence make defconfig warnings with host gcc 4.7

We do cross compiles for ARC Linux.
With gcc 4.7, a make defconfig spews out the following:

------------------->8--------------------------
make ARCH=arc defconfig
gcc: error: unrecognized command line option '-marc600'
gcc: error: unrecognized command line option '-mA7'
gcc: error: unrecognized command line option '-mno-sdata'
gcc: error: unrecognized command line option '-mno-mpy'
*** Default configuration is based on 'fpga_defconfig'
------------------->8--------------------------

This apparently is coming from LIBGCC line - which is strange to be
invoked for defconfig generation.

Reported-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 92379c7cbc1a..fa30453b1331 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -8,6 +8,10 @@
 
 UTS_MACHINE := arc
 
+ifeq ($(CROSS_COMPILE),)
+CROSS_COMPILE := arc-elf32-
+endif
+
 KBUILD_DEFCONFIG := fpga_defconfig
 
 cflags-y	+= -mA7 -fno-common -pipe -fno-builtin -D__linux__