fix up scons vs ccache

SVN-Revision: 32902

include/scons.mk

 export PLATFORM=posix
 
 SCONS_VARS = \
-	CC="$(TARGET_CC)" \
-	CXX="$(TARGET_CXX)" \
+	CC="$(TARGET_CC_NOCACHE)" \
+	CXX="$(TARGET_CXX_NOCACHE)" \
 	CFLAGS="$(TARGET_CFLAGS) $(EXTRA_CFLAGS)" \
 	CXXFLAGS="$(TARGET_CFLAGS) $(EXTRA_CFLAGS)" \
 	CPPFLAGS="$(TARGET_CPPFLAGS) $(EXTRA_CPPFLAGS)" \

rules.mk

@@ -185,13 +185,14 @@ INSTALL_DIR:=install -d -m0755
 INSTALL_DATA:=install -m0644
 INSTALL_CONF:=install -m0600
 
+TARGET_CC_NOCACHE:=$(TARGET_CC)
+TARGET_CXX_NOCACHE:=$(TARGET_CXX)
+HOSTCC_NOCACHE:=$(HOSTCC)
+export TARGET_CC_NOCACHE
+export TARGET_CXX_NOCACHE
+export HOSTCC_NOCACHE
+
 ifneq ($(CONFIG_CCACHE),)
-  TARGET_CC_NOCACHE:=$(TARGET_CC)
-  TARGET_CXX_NOCACHE:=$(TARGET_CXX)
-  HOSTCC_NOCACHE:=$(HOSTCC)
-  export TARGET_CC_NOCACHE
-  export TARGET_CXX_NOCACHE
-  export HOSTCC_NOCACHE
   TARGET_CC:= ccache_cc
   TARGET_CXX:= ccache_cxx
   HOSTCC:= ccache $(HOSTCC)