add prereq checks for target/linux/* and target/image/*, check for fdisk for the x86 builds

SVN-Revision: 5569

target/Makefile

@@ -25,6 +25,10 @@ compile: linux-compile image_compile
 install: image_clean $(patsubst %,%-install,$(TARGETS-y)) image_install
 clean: $(patsubst %,%-clean,$(TARGETS-y)) image_clean
 
+prereq: FORCE
+	$(MAKE) -C linux/$(BOARD)-$(KERNEL) prereq
+	$(MAKE) -C image/$(BOARD) prereq
+
 image_clean: FORCE
 	$(MAKE) -C image/$(BOARD) clean
 	rm -f $(BIN_DIR)/openwrt-*

target/image/x86/Makefile

@@ -54,5 +54,8 @@ define Image/Build
 	cp $(LINUX_DIR)/arch/i386/boot/bzImage $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-vmlinuz
 endef
 
-
 $(eval $(call BuildImage))
+
+$(eval $(call RequireCommand,fdisk, \
+	Please install fdisk \
+))

target/linux/x86-2.6/Makefile

@@ -16,4 +16,6 @@ LINUX_RELEASE:=1
 LINUX_KERNEL_MD5SUM:=37ddefe96625502161f075b9d907f21e
 
 include $(INCLUDE_DIR)/kernel-build.mk
+
 $(eval $(call BuildKernel))
+