diff options
| -rw-r--r-- | Rules.mak | 23 |
1 files changed, 12 insertions, 11 deletions
@@ -37,8 +37,13 @@ UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION) LIBC:=$(TOPDIR)libc/libc.a LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name) +# A nifty macro to make testing gcc features easier +check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ + then echo "$(1)"; else echo "$(2)"; fi) + # check if we have nawk, otherwise user awk -AWK:= ${shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; else echo "/usr/bin/awk"; fi} +AWK:=$(shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; \ + else echo "/usr/bin/awk"; fi) NATIVE_ARCH:= ${shell uname -m | sed \ -e 's/i.86/i386/' \ @@ -74,25 +79,21 @@ ARFLAGS:=r ifndef OPTIMIZATION # use '-Os' optimization if available, else use -O2, allow Config to override -OPTIMIZATION:= ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \ - then echo "-Os"; else echo "-O2" ; fi} +OPTIMIZATION:= +OPTIMIZATION+=${call check_gcc,-Os,-O2} ifeq ($(strip $(TARGET_ARCH)),arm) OPTIMIZATION+=-fstrict-aliasing endif ifeq ($(strip $(TARGET_ARCH)),i386) OPTIMIZATION+=-march=i386 - OPTIMIZATION += ${shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc \ - /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi} - OPTIMIZATION += ${shell if $(CC) -falign-functions=1 -falign-jumps=0 -falign-loops=0 \ - -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo \ - "-falign-functions=1 -falign-jumps=0 -falign-loops=0"; else \ - if $(CC) -malign-functions=0 -malign-jumps=0 -S -o /dev/null -xc \ - /dev/null >/dev/null 2>&1; then echo "-malign-functions=0 -malign-jumps=0"; fi; fi} + OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) + OPTIMIZATION+=$(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,\ + -malign-functions=0 -malign-jumps=0 -malign-loops=0) endif endif # Add a bunch of extra pedantic annoyingly strict checks -WARNINGS+=-Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing +WARNINGS+=-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \ |