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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2014-03-05 16:59:37 +0900
committerTom Rini <trini@ti.com>2014-03-07 10:59:06 -0500
commite91df49fbb56858003ebe61191ae07b223a7b866 (patch)
tree03f046a502e4d6d7bfe66afe7e07980adfa58a5b /lib
parent3775dcd9c4ad9d7f19f2ff14989f5180aaba3d64 (diff)
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/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Makefile b/lib/Makefile
index dedb97b0ed8..8814ff9671c 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