diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2009-06-14 09:33:00 -0400 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-06-14 22:44:24 +0200 |
| commit | 5ec5529b82f314ca2cf9c262cdfc985d5fc468a0 (patch) | |
| tree | 1ae2f6bcf6155887f2a007ba25bd542d890f587e /config.mk | |
| parent | 92afd368bba7d98b2b7bfb51082c3639bb2119b3 (diff) | |
allow boards to customize compiler options on a per-file/dir basis
With our Blackfin boards, we like to build the compression routines with
-O2 as our tests show a pretty good size/speed tradeoff. For the rest of
U-Boot though, we want to stick with the default -Os as that is mostly
control code. So in our case, we would add a line like so to the board
specific config.mk file:
CFLAGS_lib_generic += -O2
Now all files under lib_generic/ will have -O2 appended to their build.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'config.mk')
| -rw-r--r-- | config.mk | 8 |
1 files changed, 5 insertions, 3 deletions
@@ -206,11 +206,13 @@ export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS ######################################################################### +# Allow boards to use custom optimize flags on a per dir/file basis +BCURDIR := $(notdir $(CURDIR)) $(obj)%.s: %.S - $(CPP) $(AFLAGS) -o $@ $< + $(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< $(obj)%.o: %.S - $(CC) $(AFLAGS) -c -o $@ $< + $(CC) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c $(obj)%.o: %.c - $(CC) $(CFLAGS) -c -o $@ $< + $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c ######################################################################### |