From 5ec5529b82f314ca2cf9c262cdfc985d5fc468a0 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sun, 14 Jun 2009 09:33:00 -0400 Subject: 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 Acked-by: Jean-Christophe PLAGNIOL-VILLARD --- config.mk | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/config.mk b/config.mk index 8d47a8e..f5b9c28 100644 --- a/config.mk +++ b/config.mk @@ -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 ######################################################################### -- cgit v1.1