don't overwrite version.mk, substitute REVISION instead

SVN-Revision: 31271

include/version.mk

@@ -5,6 +5,9 @@
 # See /LICENSE for more information.
 #
 
+# Substituted by SDK, do not remove
+# REVISION:=x
+
 PKG_CONFIG_DEPENDS += \
 	CONFIG_VERSION_NUMBER \
 	CONFIG_VERSION_NICK \

target/sdk/Makefile

@@ -56,7 +56,7 @@ $(BIN_DIR)/$(SDK_NAME).tar.bz2: clean
 		> $(SDK_BUILD_DIR)/feeds.conf.default
 	cat $(TOPDIR)/feeds.conf.default \
 		>> $(SDK_BUILD_DIR)/feeds.conf.default
-	echo REVISION:="$(REVISION)" > $(SDK_BUILD_DIR)/include/version.mk
+	$(SED) 's,^# REVISION:=.*,REVISION:=$(REVISION),g' $(SDK_BUILD_DIR)/include/version.mk
 	find $(SDK_BUILD_DIR) -name .git | $(XARGS) rm -rf
 	find $(SDK_BUILD_DIR) -name .svn | $(XARGS) rm -rf
 	find $(SDK_BUILD_DIR) -name CVS | $(XARGS) rm -rf