turn the IXP4xx microcode check into a prereq check so that the error message is displayed before the compile starts

SVN-Revision: 6148

target/linux/ixp4xx-2.6/image/Makefile

@@ -51,3 +51,17 @@ define Image/Build/jffs2-128k
 endef
 
 $(eval $(call BuildImage))
+
+UCODEFILE:=IPL_ixp400NpeLibrary-2_3.zip
+
+define Require/npe-ucode
+	[ -f $(DL_DIR)/$(UCODEFILE) ]
+endef
+
+$(eval $(call Require,npe-ucode, \
+	You must manually download $(UCODEFILE) from \\\
+	http://www.intel.com/design/network/products/npfamily/ixp400_current.htm \\\
+	and put it in $(DL_DIR). \\\
+	You will need to agree to the Intel Public License to do so - please do read it! \
+))
+	

target/linux/ixp4xx-2.6/image/npe-ucode/Makefile

@@ -14,7 +14,6 @@ PKG_RELEASE:=1
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE:=IPL_ixp400NpeLibrary-2_3.zip
-PKG_SOURCE_URL:=http://www.intel.com/design/network/products/npfamily/ixp400_current.htm
 PKG_UNPACK:=unzip -d $(PKG_BUILD_DIR)/ $(DL_DIR)/$(PKG_SOURCE)
 
 include $(INCLUDE_DIR)/unpack.mk
@@ -32,12 +31,6 @@ $(PKG_BUILD_DIR)/NPE-B: $(PKG_BUILD_DIR)/.prepared
 	  $(HOSTCC) -Wall IxNpeMicrocode.c -o IxNpeMicrocode ; \
 	  ./IxNpeMicrocode -be )
 
-$(DL_DIR)/$(PKG_SOURCE):
-	mkdir -p $(DL_DIR)
-	echo "You must manually download $(PKG_SOURCE) from $(PKG_SOURCE_URL) and put it in $(DL_DIR)."
-	echo "You will need to agree to the Intel Public License to do so - please do read it!"
-	false
-
 download: $(DL_DIR)/$(PKG_SOURCE)
 prepare: $(PKG_BUILD_DIR)/.prepared
 compile: $(PKG_BUILD_DIR)/NPE-B