diff options
Diffstat (limited to 'Makefile.target')
| -rw-r--r-- | Makefile.target | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/Makefile.target b/Makefile.target index c0a79f9699..38899ff14f 100644 --- a/Makefile.target +++ b/Makefile.target @@ -70,16 +70,26 @@ BASE_LDFLAGS+=-static endif # We require -O2 to avoid the stack setup prologue in EXIT_TB -OP_CFLAGS = -Wall -O2 -g -fno-strict-aliasing +OP_CFLAGS := -Wall -O2 -g -fno-strict-aliasing + +# cc-option +# Usage: OP_CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0) + +cc-option = $(shell if $(CC) $(OP_CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ + > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) + +OP_CFLAGS+=$(call cc-option, -fno-reorder-blocks, "") +OP_CFLAGS+=$(call cc-option, -fno-gcse, "") +OP_CFLAGS+=$(call cc-option, -fno-tree-ch, "") +OP_CFLAGS+=$(call cc-option, -fno-optimize-sibling-calls, "") +OP_CFLAGS+=$(call cc-option, -fno-crossjumping, "") +OP_CFLAGS+=$(call cc-option, -fno-align-labels, "") +OP_CFLAGS+=$(call cc-option, -fno-align-jumps, "") +OP_CFLAGS+=$(call cc-option, -fno-align-functions, $(call cc-option, -malign-functions=0, "")) ifeq ($(ARCH),i386) HELPER_CFLAGS+=-fomit-frame-pointer OP_CFLAGS+=-mpreferred-stack-boundary=2 -fomit-frame-pointer -ifeq ($(HAVE_GCC3_OPTIONS),yes) -OP_CFLAGS+= -falign-functions=0 -fno-gcse -else -OP_CFLAGS+= -malign-functions=0 -endif ifdef TARGET_GPROF USE_I386_LD=y endif @@ -163,11 +173,6 @@ ifeq ($(ARCH),mips) BASE_LDFLAGS+=-Wl,-T,$(SRC_PATH)/$(ARCH).ld endif -ifeq ($(HAVE_GCC3_OPTIONS),yes) -# very important to generate a return at the end of every operation -OP_CFLAGS+=-fno-reorder-blocks -fno-optimize-sibling-calls -endif - ifeq ($(CONFIG_DARWIN),yes) LIBS+=-lmx endif |