diff options
Diffstat (limited to 'Rules.mak')
| -rw-r--r-- | Rules.mak | 43 |
1 files changed, 34 insertions, 9 deletions
@@ -94,20 +94,45 @@ export LC_COLLATE ARFLAGS:=r -# Some nice architecture specific optimizations -ifndef OPTIMIZATION - # use '-Os' optimization if available, else use -O2, allow Config to override OPTIMIZATION:= OPTIMIZATION+=$(call check_gcc,-Os,-O2) -ifeq ($(strip $(TARGET_ARCH)),arm) - OPTIMIZATION+=-fstrict-aliasing -endif + +# Some nice CPU specific optimizations ifeq ($(strip $(TARGET_ARCH)),i386) OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) - OPTIMIZATION+=$(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,\ - -malign-functions=0 -malign-jumps=0 -malign-loops=0) + OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0) + CPU_CFLAGS-$(CONFIG_386):="-march=i386" + CPU_CFLAGS-$(CONFIG_486):="-march=i486" + CPU_CFLAGS-$(CONFIG_586):="-march=i586" + CPU_CFLAGS-$(CONFIG_586MMX):="$(call check_gcc,-march=pentium-mmx,-march=i586)" + CPU_CFLAGS-$(CONFIG_686):="-march=i686" + CPU_CFLAGS-$(CONFIG_PENTIUMIII):="$(call check_gcc,-march=pentium3,-march=i686)" + CPU_CFLAGS-$(CONFIG_PENTIUM4):="$(call check_gcc,-march=pentium4,-march=i686)" + CPU_CFLAGS-$(CONFIG_K6):="$(call check_gcc,-march=k6,-march=i586)" + CPU_CFLAGS-$(CONFIG_K7):="$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)" + CPU_CFLAGS-$(CONFIG_CRUSOE):="-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0" + CPU_CFLAGS-$(CONFIG_WINCHIPC6):="$(call check_gcc,-march=winchip-c6,-march=i586)" + CPU_CFLAGS-$(CONFIG_WINCHIP2):="$(call check_gcc,-march=winchip2,-march=i586)" + CPU_CFLAGS-$(CONFIG_CYRIXIII):="$(call check_gcc,-march=c3,-march=i586)" endif + +ifeq ($(strip $(TARGET_ARCH)),arm) + OPTIMIZATION+=-fstrict-aliasing + CPU_CFLAGS-$(CONFIG_GENERIC_ARM):= + CPU_CFLAGS-$(CONFIG_ARM7TDMI):="-march=arm7tdmi" + CPU_CFLAGS-$(CONFIG_STRONGARM):="-march=strongarm" + CPU_CFLAGS-$(CONFIG_XSCALE):="$(call check_gcc,-march=xscale,-march=strongarm)" +endif + +ifeq ($(strip $(TARGET_ARCH)),sh) + OPTIMIZATION+=-fstrict-aliasing + CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):="-ml" + CPU_CFLAGS-$(ARCH_BIG_ENDIAN):="-mb" + CPU_CFLAGS-$(CONFIG_SH2)+="-m2" + CPU_CFLAGS-$(CONFIG_SH3)+="-m3" + CPU_CFLAGS-$(CONFIG_SH4)+="-m4" + CPU_CFLAGS-$(CONFIG_SH5)+="-m5" endif # Add a bunch of extra pedantic annoyingly strict checks @@ -115,7 +140,7 @@ WARNINGS+=-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \ - -I$(TOPDIR)include -iwithprefix include -I. -D_LIBC $(CPU_CFLAGS) $(ARCH_CFLAGS) + -I$(TOPDIR)include -iwithprefix include -I. -D_LIBC $(CPU_CFLAGS-y) $(ARCH_CFLAGS) NATIVE_CFLAGS:=-O2 -Wall ifeq ($(strip $(DODEBUG)),y) |