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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-03-05 16:59:37 +0900 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-03-07 10:59:06 -0500 |
| commit | e91df49fbb56858003ebe61191ae07b223a7b866 (patch) | |
| tree | 03f046a502e4d6d7bfe66afe7e07980adfa58a5b /lib | |
| parent | 3775dcd9c4ad9d7f19f2ff14989f5180aaba3d64 (diff) | |
| download | u-boot-imx-e91df49fbb56858003ebe61191ae07b223a7b866.zip u-boot-imx-e91df49fbb56858003ebe61191ae07b223a7b866.tar.gz u-boot-imx-e91df49fbb56858003ebe61191ae07b223a7b866.tar.bz2 | |
kbuild, blackfin: Add CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED
Many (but not all) of Blackfin boards give -O2 option
to compile under lib/ directory.
That means lib/ should be speed-optimized,
whereas other parts should be size-optimized.
We want to keep the same behavior,
but do not want to parse board/*/config.mk again and again.
We've got no choice but to invent a new method.
CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED, if it is enabled,
gives -O2 flag only for building under lib/ directory.
Dirty codes which I had marked as "FIX ME"
in board/${BOARD}/config.mk have been deleted.
Instead, CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED has been
defined in include/configs/${BOARD}.h.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Sonic Zhang <sonic.zhang@analog.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Makefile b/lib/Makefile index dedb97b..8814ff9 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -65,3 +65,5 @@ obj-y += vsprintf.o obj-$(CONFIG_RANDOM_MACADDR) += rand.o obj-$(CONFIG_BOOTP_RANDOM_DELAY) += rand.o obj-$(CONFIG_CMD_LINK_LOCAL) += rand.o + +subdir-ccflags-$(CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED) += -O2 |