Use linke to build-time-tools, disable libssp which does not work for cross-compile

toolchain/gcc/gcc-uclibc-3.x.mk

@@ -252,8 +252,8 @@ $(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.patched $(GCC_STAGING_PREREQ)
 		--enable-languages=$(GCC_CROSS_LANGUAGES) \
 		--disable-__cxa_atexit \
 		--enable-target-optspace \
-		--with-gnu-ld \
-		--with-as=$(TARGET_CROSS)as \
+		--with-build-time-tools=$(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/bin \
+		--disable-libssp \
 		$(GCC_WITH_HOST_GMP) \
 		$(GCC_WITH_HOST_MPFR) \
 		$(GCC_SHARED_LIBGCC) \
@@ -355,13 +355,14 @@ endif
 	touch $@
 
 cross_compiler:=$(STAGING_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-gcc
-cross_compiler gcc: uclibc-configured binutils gcc_initial \
-	$(LIBFLOAT_TARGET) uclibc \
-	$(GCC_BUILD_DIR2)/.installed $(GCC_BUILD_DIR2)/.libs_installed \
+cross_compiler gcc: gcc-config $(GCC_BUILD_DIR2)/.installed $(GCC_BUILD_DIR2)/.libs_installed \
 	$(GCC_TARGETS)
 
 gcc-source: $(DL_DIR)/$(GCC_SOURCE)
 
+gcc-config:uclibc-configured binutils gcc_initial $(LIBFLOAT_TARGET) \
+	uclibc $(GCC_BUILD_DIR2)/.configured
+
 gcc-clean:
 	rm -rf $(GCC_BUILD_DIR2)
 	for prog in cpp gcc gcc-[0-9]* protoize unprotoize gcov gccbug cc; do \