From: ian <ian>
Date: Sun, 15 Jun 2008 11:35:42 +0000 (+0000)
Subject: New $(ocmp) like $o but compares to avoid too much remaking
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=b546937f4c5af45ae4a21948a984bece693c7e78;p=trains.git

New $(ocmp) like $o but compares to avoid too much remaking
---

diff --git a/common.make b/common.make
index a15cbed..8a9c398 100644
--- a/common.make
+++ b/common.make
@@ -1 +1,2 @@
 o=>$@.new && mv -f $@.new $@
+ocmp=>$@.new && (cmp $@ $@.new || mv -f $@.new $@)