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Makefile.IMA: generate autoconf.h if needed

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Makefile.IMA: use ld -gc-collect on gc -combine result
 (by using trylink script). Saves ~3k.
This commit is contained in:
Denis Vlasenko 2008-04-12 13:46:39 +00:00
parent eecd588c53
commit 55e06c1edf
1 changed files with 20 additions and 5 deletions
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25
scripts/Makefile.IMA
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@ -146,21 +146,36 @@ lib-all-y += $(patsubst %,libbb/%,$(sort $(lib-y)))
lib-y:= lib-y:=
comma:=, comma:=,
busybox: $(usage_stuff) include/applet_tables.h busybox_unstripped.o: $(usage_stuff) include/applet_tables.h include/autoconf.h
$(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) \ $(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) \
$(patsubst %,-Wl$(comma)%,$(LDFLAGS) $(EXTRA_LDFLAGS)) \ $(patsubst %,-Wl$(comma)%,$(LDFLAGS) $(EXTRA_LDFLAGS)) \
-DGCC_COMBINE=1 \ -DGCC_COMBINE=1 \
--combine $(WHOLE_PROGRAM) \ --combine $(WHOLE_PROGRAM) \
-funit-at-a-time -Wno-error -std=gnu99 \ -funit-at-a-time -Wno-error -std=gnu99 \
-o $(@)_unstripped $(lib-all-y:.o=.c) \ -c -o busybox_unstripped.o \
-Wl,--start-group -lcrypt -lm -Wl,--end-group $(lib-all-y:.o=.c)
busybox: busybox_unstripped.o
$(srctree)/scripts/trylink \
busybox_unstripped \
"$(CC)" \
"$(CFLAGS)" \
"$(LDFLAGS)" \
"busybox_unstripped.o" \
"" \
"crypt m"
cp -f $(@)_unstripped $@ cp -f $(@)_unstripped $@
-$(STRIP) -s -R .note -R .comment -R .version $@ -$(STRIP) -s -R .note -R .comment -R .version $@
applets/usage: # If .config is newer than include/autoconf.h, someone tinkered
# with it and forgot to run make oldconfig.
include/autoconf.h: .config
$(MAKE) -f $(srctree)/Makefile silentoldconfig
applets/usage: include/autoconf.h
$(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/usage applets/usage.c $(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/usage applets/usage.c
applets/applet_tables: applets/applet_tables: include/autoconf.h
$(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/applet_tables applets/applet_tables.c $(HOSTCC) -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -I$(srctree)/include -o applets/applet_tables applets/applet_tables.c
include/usage_compressed.h: $(srctree)/include/usage.h applets/usage include/usage_compressed.h: $(srctree)/include/usage.h applets/usage