From: Michal Marek <mmarek@suse.cz>
Date: Wed, 1 Jul 2015 15:19:30 +0000 (+0200)
Subject: kbuild: Allow arch Makefiles to override {cpp,ld,c}flags
X-Git-Tag: omap-for-v4.3/fixes-merge-window~243^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61754c18752ffb78145671e94f053fb202fff041;p=pandora-kernel.git

kbuild: Allow arch Makefiles to override {cpp,ld,c}flags

Since commit a1c48bb1 (Makefile: Fix unrecognized cross-compiler command
line options), the arch Makefile is included earlier by the main
Makefile, preventing the arc architecture to set its -O3 compiler
option. Since there might be more use cases for an arch Makefile to
fine-tune the options, add support for ARCH_CPPFLAGS, ARCH_AFLAGS and
ARCH_CFLAGS variables that are appended to the respective kbuild
variables. The user still has the final say via the KCPPFLAGS, KAFLAGS
and KCFLAGS variables.

Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: stable@vger.kernel.org # 3.16+
Signed-off-by: Michal Marek <mmarek@suse.com>
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