X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/83b31e078f713ebc761f90030d71e12618bd68ad..9c3bf81864220c186fee4ea201400cf7e17b90ac:/Makefile

diff --git a/Makefile b/Makefile
index 72b24d14e..4bdc4651e 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ ifneq ($(OPENWRT_BUILD),1)
   # but we can't include that file in this context
   empty:=
   space:= $(empty) $(empty)
-  _SINGLE=MAKEFLAGS=$(space)
+  _SINGLE=export MAKEFLAGS=$(space);
 
   override OPENWRT_BUILD=1
   export OPENWRT_BUILD
@@ -50,18 +50,29 @@ $(BUILD_DIR)/.prepared: Makefile
 
 clean: FORCE
 	rm -rf $(BUILD_DIR) $(BIN_DIR)
-	$(SUBMAKE) target/linux/clean
+	$(_SINGLE)$(SUBMAKE) target/linux/clean
 
 dirclean: clean
-	rm -rf $(STAGING_DIR) $(STAGING_DIR_HOST) $(STAGING_DIR_TOOLCHAIN) $(TOOLCHAIN_DIR) $(BUILD_DIR_HOST)
+	rm -rf $(STAGING_DIR) $(STAGING_DIR_HOST) $(STAGING_DIR_TOOLCHAIN) $(TOOLCHAIN_DIR) $(BUILD_DIR_HOST) $(BUILD_DIR_TOOLCHAIN)
 	rm -rf $(TMP_DIR)
 
+tmp/.prereq_packages: .config
+	unset ERROR; \
+	for package in $(sort $(prereq-y) $(prereq-m)); do \
+		$(_SINGLE)$(NO_TRACE_MAKE) -s -r -C package/$$package prereq || ERROR=1; \
+	done; \
+	if [ -n "$$ERROR" ]; then \
+		echo "Package prerequisite check failed."; \
+		false; \
+	fi
+	touch $@
+
 # check prerequisites before starting to build
-prereq: $(package/stamp-prereq) $(target/stamp-prereq) ;
+prereq: $(target/stamp-prereq) tmp/.prereq_packages
 
 prepare: .config $(tools/stamp-install) $(toolchain/stamp-install)
 world: prepare $(target/stamp-compile) $(package/stamp-cleanup) $(package/stamp-compile) $(package/stamp-install) $(package/stamp-rootfs-prepare) $(target/stamp-install) FORCE
-	$(SUBMAKE) package/index
+	$(_SINGLE)$(SUBMAKE) package/index
 
 # update all feeds, re-create index files, install symlinks
 package/symlinks: