Add two debug rules the examine the values of runtime make variables. Based on patch...

SVN-Revision: 23389

diff --git a/rules.mk b/rules.mk
index 49044c8cfbf4b87a8468742d4cb8abe51d62d4d9..7d3516bc4272e1186dde2ceb89145cde7c5ad19d 100644 (file)
--- a/rules.mk
+++ b/rules.mk
@@ -254,4 +254,16 @@ all:
 FORCE: ;
 .PHONY: FORCE
 
+val.%:
+       @$(if $(filter undefined,$(origin $*)),\
+               echo "$* undefined" >&2, \
+               echo '$(subst ','"'"',$($*))' \
+       )
+
+var.%:
+       @$(if $(filter undefined,$(origin $*)),\
+               echo "$* undefined" >&2, \
+               echo "$*='"'$(subst ','"'\"'\"'"',$($*))'"'" \
+       )
+
 endif #__rules_inc