move cflags default setting to target makefiles

SVN-Revision: 14866

include/target.mk

@@ -150,6 +150,13 @@ ifeq ($(DUMP),1)
     # remove duplicates
     FEATURES:=$(sort $(FEATURES))
   endif
+  DEFAULT_CFLAGS_i386=-O2 -pipe -march=i486 -funit-at-a-time
+  DEFAULT_CFLAGS_x86_64=-O2 -pipe -march=athlon64 -funit-at-a-time
+  DEFAULT_CFLAGS_mips=-Os -pipe -mips32 -mtune=mips32 -funit-at-a-time
+  DEFAULT_CFLAGS_mipsel=$(DEFAULT_CFLAGS_mips)
+  DEFAULT_CFLAGS_arm=-Os -pipe -march=armv5te -mtune=xscale -funit-at-a-time
+  DEFAULT_CFLAGS_armeb=$(DEFAULT_CFLAGS_arm)
+  DEFAULT_CFLAGS=$(if $(DEFAULT_CFLAGS_$(ARCH)),$(DEFAULT_CFLAGS_$(ARCH)),-Os -pipe -funit-at-a-time)
 endif
 
 define BuildTargets/DumpCurrent
@@ -163,6 +170,7 @@ define BuildTargets/DumpCurrent
 	 echo 'Target-Arch: $(ARCH)'; \
 	 echo 'Target-Features: $(FEATURES)'; \
 	 echo 'Target-Depends: $(DEPENDS)'; \
+	 echo 'Target-Optimization: $(if $(CFLAGS),$(CFLAGS),$(DEFAULT_CFLAGS))'; \
 	 echo 'Linux-Version: $(LINUX_VERSION)'; \
 	 echo 'Linux-Release: $(LINUX_RELEASE)'; \
 	 echo 'Linux-Kernel-Arch: $(LINUX_KARCH)'; \

rules.mk

@@ -29,6 +29,7 @@ confvar=$(call merge,$(foreach v,$(1),$(if $($(v)),y,n)))
 strip_last=$(patsubst %.$(lastword $(subst .,$(space),$(1))),%,$(1))
 
 _SINGLE=export MAKEFLAGS=$(space);
+CFLAGS:=
 ARCH:=$(subst i486,i386,$(subst i586,i386,$(subst i686,i386,$(call qstrip,$(CONFIG_ARCH)))))
 BOARD:=$(call qstrip,$(CONFIG_TARGET_BOARD))
 TARGET_OPTIMIZATION:=$(call qstrip,$(CONFIG_TARGET_OPTIMIZATION))

scripts/metadata.pl

@@ -52,6 +52,7 @@ sub parse_target_metadata() {
 		/^Target-Features:\s*(.+)\s*$/ and $target->{features} = [ split(/\s+/, $1) ];
 		/^Target-Depends:\s*(.+)\s*$/ and $target->{depends} = [ split(/\s+/, $1) ];
 		/^Target-Description:/ and $target->{desc} = get_multiline(*FILE);
+		/^Target-Optimization:\s*(.+)\s*$/ and $target->{cflags} = $1;
 		/^Linux-Version:\s*(.+)\s*$/ and $target->{version} = $1;
 		/^Linux-Release:\s*(.+)\s*$/ and $target->{release} = $1;
 		/^Linux-Kernel-Arch:\s*(.+)\s*$/ and $target->{karch} = $1;
@@ -325,6 +326,16 @@ EOF
 	foreach my $target (@target) {
 		$target->{subtarget} or	print "\t\tdefault \"".$target->{board}."\" if TARGET_".$target->{conf}."\n";
 	}
+	print <<EOF;
+
+config DEFAULT_TARGET_OPTIMIZATION
+	string
+EOF
+	foreach my $target (@target) {
+		next if @{$target->{subtargets}} > 0;
+		print "\tdefault \"".$target->{cflags}."\" if TARGET_".$target->{conf}."\n";
+	}
+	print "\tdefault \"-Os -pipe -funit-at-a-time\"\n";
 
 	my %kver;
 	foreach my $target (@target) {
@@ -332,8 +343,10 @@ EOF
 		next if $kver{$v};
 		$kver{$v} = 1;
 		print <<EOF;
+
 config LINUX_$v
 	bool
+
 EOF
 	}
 	foreach my $def (sort keys %defaults) {

target/linux/ar71xx/Makefile

@@ -10,6 +10,7 @@ ARCH:=mips
 BOARD:=ar71xx
 BOARDNAME:=Atheros AR71xx/AR913x
 FEATURES:=squashfs tgz
+CFLAGS:=-Os -pipe -mips32r2 -mtune=mips32r2 -funit-at-a-time
 
 LINUX_VERSION:=2.6.28.7
 

target/linux/storm/Makefile

@@ -10,6 +10,7 @@ ARCH:=arm
 BOARD:=storm
 BOARDNAME:=Storm SL3512
 FEATURES:=squashfs pci broken
+CFLAGS:=-Os -pipe -march=armv4 -mtune=arm9tdmi -funit-at-a-time
 
 LINUX_VERSION:=2.6.23.17
 

toolchain/Config.in

@@ -104,16 +104,7 @@ config SOFT_FLOAT
 config TARGET_OPTIMIZATION
 	string
 	prompt "Target Optimizations" if TOOLCHAINOPTS
-	default "-O2 -pipe -march=i686 -funit-at-a-time" if TARGET_x86_mediacenter
+	default DEFAULT_TARGET_OPTIMIZATION
-	default "-O2 -pipe -march=i486 -funit-at-a-time" if TARGET_x86
-	default "-Os -pipe -march=i486 -funit-at-a-time" if TARGET_rdc
-	default "-Os -pipe -march=i486 -funit-at-a-time" if TARGET_uml && i386
-	default "-Os -pipe -march=athlon64 -funit-at-a-time" if TARGET_uml && x86_64
-	default "-Os -pipe -mips32r2 -mtune=mips32r2 -funit-at-a-time" if TARGET_ar71xx
-	default "-Os -pipe -mips32 -mtune=mips32 -funit-at-a-time" if mipsel || mips
-	default "-Os -pipe -march=armv5te -mtune=xscale -funit-at-a-time" if TARGET_ixp4xx || TARGET_iop32x || TARGET_pxa || TARGET_orion
-	default "-Os -pipe -march=armv4 -mtune=arm9tdmi -funit-at-a-time" if TARGET_storm
-	default "-Os -pipe -funit-at-a-time"
 	help
 	  Optimizations to use when building for the target host.