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| author | Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua> | 2004-10-17 15:48:59 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@mars.ravnborg.org> | 2004-10-17 15:48:59 +0200 |
| commit | 1ceee1b789e4c34b677eacabc39d99b0d6132d0f (patch) | |
| tree | ce8a08fcfc668930fd1fd34691275e18d0c51c7f /Makefile | |
| parent | 78a14efa246b43d8bfcd64ffa214183a72f578b5 (diff) | |
| download | history-1ceee1b789e4c34b677eacabc39d99b0d6132d0f.tar.gz | |
kbuild: make gcc -align options .config-settable
With all alignment options set to 1 (minimum alignment),
I've got 5% smaller vmlinux compared to one built with
default code alignment.
Original implementation altered to use cc-option-align by sam.
From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Makefile b/Makefile index ba82153bbd815c..8e85b7de60f6d3 100644 --- a/Makefile +++ b/Makefile @@ -503,6 +503,13 @@ else CFLAGS += -O2 endif +#Add align options if CONFIG_CC_* is not equal to 0 +add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1))) +CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions) +CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels) +CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops) +CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps) + ifdef CONFIG_FRAME_POINTER CFLAGS += -fno-omit-frame-pointer else |