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 ($(HAVE_GCC3_OPTIONS),yes)
-OP_CFLAGS+= -falign-functions=0 -fno-gcse
-else
-OP_CFLAGS+= -malign-functions=0
-endif
ifdef TARGET_GPROF
USE_I386_LD=y
endif
BASE_LDFLAGS+=-Wl,-T,$(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
}
EOF
-have_gcc3_options="no"
-if $cc -fno-reorder-blocks -fno-optimize-sibling-calls -o $TMPO $TMPC 2> /dev/null ; then
- have_gcc3_options="yes"
-fi
-
##########################################
# SDL probe
echo "MAKE=$make" >> $config_mak
echo "INSTALL=$install" >> $config_mak
echo "CC=$cc" >> $config_mak
-if test "$have_gcc3_options" = "yes" ; then
- echo "HAVE_GCC3_OPTIONS=yes" >> $config_mak
-fi
echo "HOST_CC=$host_cc" >> $config_mak
echo "AR=$ar" >> $config_mak
echo "STRIP=$strip -s -R .comment -R .note" >> $config_mak