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| author | Vadim Bendebury <vbendeb@chromium.org> | 2014-04-22 17:06:43 -0700 |
|---|---|---|
| committer | Isaac Christensen <isaac.christensen@se-eng.com> | 2014-10-02 21:37:01 +0200 |
| commit | 55cdc160bbe1827e8ab1a2370ab1ebb0162e9768 (patch) | |
| tree | 68ba7e486e088d09a825a28e985d98712cdea19a | |
| parent | daecc449ca1708a2412df6cd394e299ede36bfe2 (diff) | |
| download | coreboot-55cdc160bbe1827e8ab1a2370ab1ebb0162e9768.tar.xz | |
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 <vbendeb@chromium.org>
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 <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/7005
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
| -rw-r--r-- | Makefile.inc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Makefile.inc b/Makefile.inc index d307c60dec..8e9605770f 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 \ |