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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-08-22 19:42:29 +0900 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-08-28 17:18:48 -0400 |
| commit | 4a8ed8e24886adf47086125f81307eaa8c358437 (patch) | |
| tree | 4f3ed3773631da2b41bae0d3f5a4693435abbf3b | |
| parent | a6f47d2434f27e7c98dde811436912f0dd63a53e (diff) | |
| download | blackbird-obmc-uboot-4a8ed8e24886adf47086125f81307eaa8c358437.tar.gz blackbird-obmc-uboot-4a8ed8e24886adf47086125f81307eaa8c358437.zip | |
kconfig: add CONFIG_CC_OPTIMIZE_FOR_SIZE
Copy the Kconfig option from "init/Kconfig" of Linux v3.16 tag
and adjust the help document.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| -rw-r--r-- | Kconfig | 10 | ||||
| -rw-r--r-- | Makefile | 6 |
2 files changed, 15 insertions, 1 deletions
@@ -46,6 +46,16 @@ config LOCALVERSION_AUTO which is done within the script "scripts/setlocalversion".) +config CC_OPTIMIZE_FOR_SIZE + bool "Optimize for size" + depends on !SPL_BUILD + default y + help + Enabling this option will pass "-Os" instead of "-O2" to gcc + resulting in a smaller U-Boot image. + + This option is enabled by default for U-Boot. + endmenu # General setup menu "Boot images" @@ -529,7 +529,11 @@ else include/config/auto.conf: ; endif # $(dot-config) -KBUILD_CFLAGS += -Os #-fomit-frame-pointer +ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE +KBUILD_CFLAGS += -Os +else +KBUILD_CFLAGS += -O2 +endif ifdef BUILD_TAG KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' |
