- for the native target gcc, drop --enable-optspace in favour of using the configured...

  Saves about 20% size without additional configure args:
   text    data     bss     dec     hex filename
4685000   17280  566360 5268640  5064a0 optspace/i586-linux-uclibc/4.2.0/cc1
3630655   15184  562172 4208011  40358b usrflags/i586-linux-uclibc/4.2.0/cc1
4853646   23532  568528 5445706  53184a optspace/i586-linux-uclibc/4.2.0/f951
3772121   21292  564148 4357561  427db9 usrflags/i586-linux-uclibc/4.2.0/f951

diff --git a/toolchain/gcc/Makefile.in b/toolchain/gcc/Makefile.in
index 41e23cf591ec825cf1eb8dd3b74793676c14e14c..1b6e241333a7ae005681679abeabcf3a2cf3fa80 100644 (file)
--- a/toolchain/gcc/Makefile.in
+++ b/toolchain/gcc/Makefile.in
@@ -30,18 +30,30 @@ SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
 else
 SOFT_FLOAT_CONFIG_OPTION:=--without-float
 endif
+
 # again... there must be a better way
 ifeq ($(findstring 4.,$(GCC_VERSION)),4.)
 SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
+ifeq ($(BR2_SOFT_FLOAT_FP),y)
+TARGET_SOFT_FLOAT:=-mfloat-abi=softfp
+else # no fp at all
+TARGET_SOFT_FLOAT:=-mfloat-abi=soft
 endif
+else # not gcc-4.x
 TARGET_SOFT_FLOAT:=-msoft-float
+endif
 ARCH_FPU_SUFFIX:=_nofpu
-else
+else # no softfloat support
 SOFT_FLOAT_CONFIG_OPTION:=
 TARGET_SOFT_FLOAT:=
 ARCH_FPU_SUFFIX:=
 endif
 
+TARGET_GCC_FLAGS= CFLAGS_FOR_TARGET="$(TARGET_CFLAGS) $(TARGET_SOFT_FLOAT)" \
+       CXXFLAGS_FOR_TARGET="$(TARGET_CFLAGS) $(TARGET_SOFT_FLOAT)" \
+       CFLAGS="$(TARGET_CFLAGS) $(TARGET_SOFT_FLOAT)" \
+       BOOT_CFLAGS="$(TARGET_CFLAGS) $(TARGET_SOFT_FLOAT)"
+
 ifeq ($(strip $(BR2_PACKAGE_GCC_TARGET)),y)
 TARGETS+=gcc_target
 endif

diff --git a/toolchain/gcc/gcc-uclibc-3.x.mk b/toolchain/gcc/gcc-uclibc-3.x.mk
index 9eb6d776c005ca7387822ddab43dc90e1a4c1975..c67a2699d55d3c975868a872bbe6f3373cf9828e 100644 (file)
--- a/toolchain/gcc/gcc-uclibc-3.x.mk
+++ b/toolchain/gcc/gcc-uclibc-3.x.mk
@@ -333,7 +333,8 @@ $(GCC_BUILD_DIR3)/.configured: $(GCC_BUILD_DIR3)/.prepared
        (cd $(GCC_BUILD_DIR3); rm -rf config.cache ; \
                PATH=$(TARGET_PATH) \
                CC_FOR_BUILD="$(HOSTCC)" \
-               BOOT_CFLAGS="$(TARGET_CFLAGS)" \
+               CFLAGS_FOR_BUILD="-g -O2" \
+               $(TARGET_GCC_FLAGS) \
                $(GCC_DIR)/configure \
                --prefix=/usr \
                --build=$(GNU_HOST_NAME) \
@@ -342,7 +343,6 @@ $(GCC_BUILD_DIR3)/.configured: $(GCC_BUILD_DIR3)/.prepared
                --enable-languages=$(GCC_TARGET_LANGUAGES) \
                --with-gxx-include-dir=/usr/include/c++ \
                --disable-__cxa_atexit \
-               --enable-target-optspace \
                --with-gnu-ld \
                $(GCC_SHARED_LIBGCC) \
                $(GCC_WITH_TARGET_GMP) \
@@ -354,12 +354,13 @@ $(GCC_BUILD_DIR3)/.configured: $(GCC_BUILD_DIR3)/.prepared
                $(GCC_WITH_CPU) $(GCC_WITH_ARCH) $(GCC_WITH_TUNE) \
                $(GCC_USE_SJLJ_EXCEPTIONS) \
                $(DISABLE_LARGEFILE) \
-               $(EXTRA_GCC_CONFIG_OPTIONS));
+               $(EXTRA_GCC_CONFIG_OPTIONS) \
+               $(EXTRA_TARGET_GCC_CONFIG_OPTIONS));
        touch $@
 
 $(GCC_BUILD_DIR3)/.compiled: $(GCC_BUILD_DIR3)/.configured
        PATH=$(TARGET_PATH) \
-       $(MAKE) $(TARGET_GCC_ARGS) -C $(GCC_BUILD_DIR3) all
+       $(MAKE) -C $(GCC_BUILD_DIR3) all
        touch $@
 
 #