New patch to review for coreboot: 00d2245 Provide a way to compile some files with -O0 option

[Isaac Christensen]

Isaac Christensen ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7005

-gerrit

commit 00d2245275d18a2ed12c93df6f774d95bcf4957b
Author: Vadim Bendebury 
Date:   Tue Apr 22 17:06:43 2014 -0700

Provide a way to compile some files with -O0 option

When preparing an image for source level debugging, it is convenient
    to be able to compile some modules with -O0, which makes it much
    easier to follow the execution flow.

This patch allows to do it by defining GDB_DEBUG=1 in the environment
    before invoking make. Adding this feature as a common config flag is
    problematic, because we don't want to compile the entire image with
    -O0.

Signed-off-by: Vadim Bendebury 
    Reviewed-on: https://chromium-review.googlesource.com/196359
    (cherry picked from commit dde4928c045d12e502cb109015a710cd9fdf2a04)

Changed from CFLAGS to CFLAGS_common.

Change-Id: Ie0be653509509eeb64ea3a7229f54c0c812840a9
    Signed-off-by: Isaac Christensen 
---
 Makefile.inc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Makefile.inc b/Makefile.inc
index 382eead..fe04a7a 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -218,7 +218,7 @@ CPPFLAGS_common := -Isrc -Isrc/include -I$(obj)
 CPPFLAGS_common += -Isrc/device/oprom/include
 CPPFLAGS_common += -include $(src)/include/kconfig.h

-CFLAGS_common += -Os -pipe -g -nostdinc
+CFLAGS_common += -pipe -g -nostdinc
 CFLAGS_common += -nostdlib -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes
 CFLAGS_common += -Wwrite-strings -Wredundant-decls -Wno-trigraphs
 CFLAGS_common += -Wstrict-aliasing -Wshadow
@@ -226,6 +226,12 @@ ifeq ($(CONFIG_WARNINGS_ARE_ERRORS),y)
 CFLAGS_common += -Werror
 endif
 CFLAGS_common += -fno-common -ffreestanding -fno-builtin -fomit-frame-pointer
+ifneq ($(GDB_DEBUG),)
+CFLAGS_common += -O0
+else
+CFLAGS_common += -Os
+endif
+

additional-dirs := $(objutil)/cbfstool $(objutil)/romcc $(objutil)/ifdtool \
    	   $(objutil)/ifdfake $(objutil)/options $(objutil)/fletcher \