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authorMike Frysinger <vapier@gentoo.org>2009-06-14 09:33:00 -0400
committerWolfgang Denk <wd@denx.de>2009-06-14 22:44:24 +0200
commit5ec5529b82f314ca2cf9c262cdfc985d5fc468a0 (patch)
tree1ae2f6bcf6155887f2a007ba25bd542d890f587e
parent92afd368bba7d98b2b7bfb51082c3639bb2119b3 (diff)
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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>
-rw-r--r--config.mk8
1 files 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
#########################################################################