From c133c86f41a5be64876ad611debb189d5d8b479e Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 19 Jul 2006 13:25:09 +0000
Subject: add a simple prerequisite check

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4168 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 Makefile | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 5b966b752..25f60e1e5 100644
--- a/Makefile
+++ b/Makefile
@@ -81,11 +81,24 @@ toolchain/%: FORCE
 	@[ -f .config ] || $(NO_TRACE_MAKE) menuconfig
 	@$< -D .config Config.in &> /dev/null
 
+.prereq: $(TOPDIR)/include/prereq.mk .pkginfo
+	@$(NO_TRACE_MAKE) -s -f $(TOPDIR)/include/prereq.mk prereq 2>/dev/null || { \
+		echo "Prerequisite check failed. Use FORCE=1 to override."; \
+		false; \
+	}
+	@touch $@
+
+prereq: .prereq FORCE
+
 download: .config FORCE
 	$(MAKE) toolchain/download
 	$(MAKE) package/download
 	$(MAKE) target/download
 
+ifeq ($(FORCE),)
+world: .prereq
+endif
+
 world: .config FORCE
 	$(MAKE) toolchain/install
 	$(MAKE) target/compile
-- 
cgit v1.2.3