# HG changeset patch
# User Dongsheng Song <dongsheng.song@gmail.com>
# Date 1256113302 -28800
# Node ID 3df0c9cfe9022e45d2fce6782094887cec0fed35
# Parent  a821682ea3a59b0f673cfe8bfc29cd3345c72bc2
Only run updatepo when required

diff -r a821682ea3a5 -r 3df0c9cfe902 Makefile
--- a/Makefile	Wed Oct 21 16:10:27 2009 +0800
+++ b/Makefile	Wed Oct 21 16:21:42 2009 +0800
@@ -95,13 +95,15 @@
 	    $(MAKE) $@ LINGUA=$$l; \
 	done
 else
-updatepo:
-ifneq "$(findstring $(LINGUA),$(PO_LANGUAGES))" ""
+po/$(LINGUA).po: $(wildcard en/*.xml)
+  ifneq "$(findstring $(LINGUA),$(PO_LANGUAGES))" ""
 	(cd po; \
 	$(UPDATEPO) -m ../en/00book.xml -p $(LINGUA).po; \
 	)
 	$(MAKE) tidypo LINGUA=$(LINGUA)
-endif
+  endif
+
+updatepo: po/$(LINGUA).po
 endif
 
 ifndef LINGUA