Quiet warnings in new test for ExtUtils::Command.

[p5sagit/p5-mst-13.2.git] / lib / ExtUtils / PATCHING

diff --git a/lib/ExtUtils/PATCHING b/lib/ExtUtils/PATCHING
index 30cb21f..e4b9cb2 100644 (file)
--- a/lib/ExtUtils/PATCHING
+++ b/lib/ExtUtils/PATCHING
@@ -1,3 +1,8 @@
+"The easy way is always mined.
+ The important things are always simple.
+ The simple things are always hard."
+        -- Some of Murphy's Laws of Combat
+
 This is a short set of guidelines for those patching
 ExtUtils::MakeMaker.  Its not an iron-clad set of rules, but just
 things which make life easier when reading and integrating a patch.
@@ -127,12 +132,20 @@ Cross-Platform Compatibility
 
 - Use $(NOECHO) instead of @.
 
+- Use - to tell make to ignore the exit code of a command.  (Unfortunately,
+  some make variants don't honor an $(IGNORE) macro).
+
 - Always put a space between $(NOECHO) and the command.
 
 - Always put a space between - (ignore) and the command.
 
 - Always put $(NOECHO) and - together, no space between them.
 
+        # Right
+        -$(NOECHO) command
+        $(NOECHO) command
+        - command
+
 - Often when you patch ExtUtils::MM_Unix, similar patches must be done
   to the other MM_* modules.  If you can, please do this extra work
   otherwise I have to.  If you can't, that's ok.  We can help.