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Disable compiler options dangerous for op compilation.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2495 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-03-18 23:23:31 +00:00
parent 11f295118c
commit 6c041c54bc
2 changed files with 16 additions and 19 deletions
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27
Makefile.target
View File

@ -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

8
configure vendored
View File

@ -475,11 +475,6 @@ int main(void) {
}
EOF
have_gcc3_options="no"
if $cc -fno-reorder-blocks -fno-optimize-sibling-calls -o $TMPO $TMPC 2> /dev/null ; then
have_gcc3_options="yes"
fi
##########################################
# SDL probe
@ -654,9 +649,6 @@ echo "#define CONFIG_QEMU_SHAREDIR \"$prefix$datasuffix\"" >> $config_h
echo "MAKE=$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