ar7: backport small fixes from linux-mips

[openwrt.git] / include / prereq.mk

diff --git a/include/prereq.mk b/include/prereq.mk
index eda7ca3..4a55c89 100644 (file)
--- a/include/prereq.mk
+++ b/include/prereq.mk
@@ -1,38 +1,37 @@
 # 
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2006-2007 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
 #
 
-$(TMP_DIR):
-       mkdir -p $@
+ifneq ($(__prereq_inc),1)
+__prereq_inc:=1
 
 prereq:
        if [ -f $(TMP_DIR)/.prereq-error ]; then \
                echo; \
                cat $(TMP_DIR)/.prereq-error; \
+               rm -f $(TMP_DIR)/.prereq-error; \
                echo; \
-               rm -rf $(TMP_DIR); \
                false; \
        fi
-       rm -rf $(TMP_DIR)
-       mkdir -p $(TMP_DIR)
 
-.SILENT: $(TMP_DIR) prereq
+.SILENT: prereq
+endif
 
 define Require
   export PREREQ_CHECK=1
   ifeq ($$(CHECK_$(1)),)
     prereq: prereq-$(1)
 
-    prereq-$(1): $(TMP_DIR) FORCE
+    prereq-$(1): FORCE
                echo -n "Checking '$(1)'... "
                if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
                        echo 'ok.'; \
                else \
                        echo 'failed.'; \
-                       echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
+                       echo -e "$(PKG_NAME): $(strip $(2))" | perl -ne 's/\\\s*/\n/g,print' >> $(TMP_DIR)/.prereq-error; \
                fi
 
     check-$(1): FORCE
@@ -52,3 +51,12 @@ define RequireCommand
   $$(eval $$(call Require,$(1),$(2)))
 endef
 
+define RequireHeader
+  define Require/$(1)
+    [ -e "$(1)" ]
+  endef
+  
+  $$(eval $$(call Require,$(1),$(2)))
+endef
+
+.NOTPARALLEL: