Use a nifty macro to make testing gcc features simpler
and much easier to read.
-Erik
diff --git a/Rules.mak b/Rules.mak
index f6022dc..56c4025 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -125,6 +125,9 @@
-e 's/sh[234]/sh/' \
-e 's/mips.*/mips/' \
}
+# 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)
#--------------------------------------------------------
# Arch specific compiler optimization stuff should go here.
@@ -132,8 +135,8 @@
# for OPTIMIZATION...
# use '-Os' optimization if available, else use -O2
-OPTIMIZATION := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null \
- >/dev/null 2>&1; then echo "-Os"; else echo "-O2" ; fi}
+OPTIMIZATION:=
+OPTIMIZATION+=${call check_gcc,-Os,-O2}
# Some nice architecture specific optimizations
ifeq ($(strip $(TARGET_ARCH)),arm)
@@ -141,13 +144,9 @@
endif
ifeq ($(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+=$(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,\
+ -malign-functions=0 -malign-jumps=0 -malign-loops=0)
endif
OPTIMIZATIONS:=$(OPTIMIZATION) -fomit-frame-pointer