provide CXXFLAGS_FOR_BUILD

mk/vars.mk

@@ -178,9 +178,10 @@ TARGET_CONFIGURE_OPTS=	PATH='${TARGET_PATH}' \
 			CROSS_COMPILE='$(TARGET_CROSS)'
 
 HOST_CONFIGURE_OPTS=	CC_FOR_BUILD='${CC_FOR_BUILD}' \
-			CPPFLAGS_FOR_BUILD='${CPPFLAGS_FOR_BUILD}' \
 			CXX_FOR_BUILD='${CXX_FOR_BUILD}' \
+			CPPFLAGS_FOR_BUILD='${CPPFLAGS_FOR_BUILD}' \
 			CFLAGS_FOR_BUILD='${CFLAGS_FOR_BUILD}' \
+			CXXFLAGS_FOR_BUILD='${CXXFLAGS_FOR_BUILD}' \
 			LDFLAGS_FOR_BUILD='${LDFLAGS_FOR_BUILD}'
 
 PKG_SUFFIX:=		$(strip $(subst ",, $(ADK_PACKAGE_SUFFIX)))