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Only use -mpreferred-stack-boundary with gcc versions that support it

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Eric Andersen 2001-11-10 11:23:47 +00:00
parent cd8c436d81
commit 30fcef430c
1 changed files with 5 additions and 3 deletions
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8
Makefile
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@ -111,9 +111,11 @@ export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
# use '-Os' optimization if available, else use -O2
OPTIMIZATION := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null \
>/dev/null 2>&1; then echo "-Os"; else echo "-O2" ; fi}
GCC_STACK_BOUNDRY := ${shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc /dev/null \
>/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; else echo "" ; fi}
OPTIMIZATIONS=$(OPTIMIZATION) -fomit-frame-pointer $(GCC_STACK_BOUNDRY)
WARNINGS=-Wall -Wstrict-prototypes -Wshadow
CFLAGS = -I $(TOPDIR)/include
CFLAGS = -I$(TOPDIR)/include
ARFLAGS = -r
#
@ -147,7 +149,7 @@ ifeq ($(strip $(DODEBUG)),true)
LDFLAGS += -Wl,-warn-common
STRIPCMD =
else
CFLAGS += $(WARNINGS) $(OPTIMIZATION) -fomit-frame-pointer -mpreferred-stack-boundary=2 -D_GNU_SOURCE
CFLAGS += $(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE
LDFLAGS += -s -Wl,-warn-common
STRIPCMD = $(STRIP) --remove-section=.note --remove-section=.comment $(PROG)
endif