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Michal Marek 4a9e44d553 kbuild: Allow arch Makefiles to override {cpp,ld,c}flags 
commit 61754c1875 upstream.

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>
Signed-off-by: Michal Marek <mmarek@suse.com>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-08-10 09:54:09 +01:00
..
00-INDEX kbuild: document environment variables 2009-01-02 20:43:25 +01:00
kbuild.txt kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN} and LDFLAGS_vmlinux 2012-05-05 21:19:33 +02:00
kconfig-language.txt kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT 2014-04-07 16:36:09 -07:00
kconfig.txt Documentation/kbuild/kconfig.txt: 'make listnewconfig' replaces: yes "" | make oldconfig 2013-10-08 23:51:50 +02:00
makefiles.txt kbuild: Allow arch Makefiles to override {cpp,ld,c}flags 2015-08-10 09:54:09 +01:00
modules.txt kbuild: Fix a typo in documentation 2014-06-10 14:14:29 +02:00