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| author | Joshua Henderson <joshua.henderson@microchip.com> | 2018-03-26 12:34:05 -0700 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@bootlin.com> | 2018-03-26 22:19:11 +0200 |
| commit | ed6a7e18af8f4dfddee6e6b144f20dfaf6926315 (patch) | |
| tree | d9c584030b27847ad4a7667db6ba070f85112295 | |
| parent | ef3304dabc1aef5c1035359211b1c3ca5d07eb3b (diff) | |
| download | buildroot-ed6a7e18af8f4dfddee6e6b144f20dfaf6926315.tar.gz buildroot-ed6a7e18af8f4dfddee6e6b144f20dfaf6926315.zip | |
Config.in: add -Ofast option
-Ofast (introduced in GCC 4.6) It combines the existing optimization level -O3
with options that can affect standards compliance but result in better optimized
code. For example, -Ofast enables -ffast-math.
Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
| -rw-r--r-- | Config.in | 11 | ||||
| -rw-r--r-- | package/Makefile.in | 3 |
2 files changed, 14 insertions, 0 deletions
@@ -527,6 +527,17 @@ config BR2_OPTIMIZE_S -ftree-vect-loop-version This is the default. +config BR2_OPTIMIZE_FAST + bool "optimize for fast" + depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 + help + Optimize for fast. Disregard strict standards + compliance. -Ofast enables all -O3 optimizations. It also + enables optimizations that are not valid for all + standard-compliant programs. It turns on -ffast-math and the + Fortran-specific -fstack-arrays, unless -fmax-stack-var-size + is specified, and -fno-protect-parens. + endchoice config BR2_GOOGLE_BREAKPAD_ENABLE diff --git a/package/Makefile.in b/package/Makefile.in index e387ce67fe..828e12e7d7 100644 --- a/package/Makefile.in +++ b/package/Makefile.in @@ -128,6 +128,9 @@ endif ifeq ($(BR2_OPTIMIZE_S),y) TARGET_OPTIMIZATION = -Os endif +ifeq ($(BR2_OPTIMIZE_FAST),y) +TARGET_OPTIMIZATION = -Ofast +endif ifeq ($(BR2_DEBUG_1),y) TARGET_DEBUGGING = -g1 endif |
