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| author | Vincent Palatin <vpalatin@chromium.org> | 2015-04-27 14:47:19 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-05-19 02:46:27 +0000 |
| commit | 2650ff3d70c9933e4c3dcd1401ca66b4426def4a (patch) | |
| tree | 7a4658b060d3439a525a7562c226358d55424035 /Makefile.toolchain | |
| parent | cb29daa58c0fa5866a7847c454967ef0376c7688 (diff) | |
| download | chrome-ec-2650ff3d70c9933e4c3dcd1401ca66b4426def4a.tar.gz | |
Add option to enable GCC LTO
Add CONFIG_LTO to use GCC Link-Time Optimizations to try to reduce the
flash footprint of the firmware.
Add additional protection to some functions/data to avoid removal by the
linker when their usage is not obvious.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=make buildall (with and without LTO enable on all boards)
Change-Id: I586b8c1eda4592b416c85383b65153c1d5ab0059
Reviewed-on: https://chromium-review.googlesource.com/271291
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'Makefile.toolchain')
| -rw-r--r-- | Makefile.toolchain | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile.toolchain b/Makefile.toolchain index 8beb7b2c0f..f875751115 100644 --- a/Makefile.toolchain +++ b/Makefile.toolchain @@ -55,7 +55,7 @@ LIBFTDI_LDLIBS=$(shell $(PKG_CONFIG) --libs lib${LIBFTDI_NAME}) BUILD_CFLAGS= $(LIBFTDI_CFLAGS) $(CPPFLAGS) -O3 $(CFLAGS_DEBUG) $(CFLAGS_WARN) HOST_CFLAGS=$(CPPFLAGS) -O3 $(CFLAGS_DEBUG) $(CFLAGS_WARN) -DHOST_TOOLS_BUILD -LDFLAGS=-nostdlib -Wl,-X -Wl,--gc-sections -Wl,--build-id=none +LDFLAGS=-nostdlib -Wl,-X -Wl,--gc-sections -Wl,--build-id=none $(LDFLAGS_EXTRA) BUILD_LDFLAGS=$(LIBFTDI_LDLIBS) HOST_TEST_LDFLAGS=-T core/host/host_exe.lds -lrt -pthread -rdynamic -lm\ $(if $(TEST_COVERAGE),-fprofile-arcs,) |