From 57da1b4bd21aceced30f658993fb811a5232cff7 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Fri, 31 May 2013 18:19:09 +0200
Subject: stop building l10n if strings are unchanged

The buildsystem tried to build l10n for test applications which never
produced the output it expected causing it to try building it all the
time.
---
 po/makefile | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

(limited to 'po')

diff --git a/po/makefile b/po/makefile
index ebf6c06d0..5a3c7fb67 100644
--- a/po/makefile
+++ b/po/makefile
@@ -30,17 +30,23 @@ GETDOMAIN = $(word 1,$(subst /, ,$(1)))
 # and produce the .pot file.
 $(POTFILES) : $(PO)/%.pot :
 	echo "Generating POT file $@"
-	echo $@ : $(wildcard $(PO)/domains/$*/*.*list) $(addprefix $(BASE)/,$(shell cat $(wildcard $(PO)/domains/$*/*.srclist))) > $@.d
+	echo $@ : $(wildcard $(PO)/domains/$*/*.*list) $(addprefix $(BASE)/,$(shell cat $(wildcard $(PO)/domains/$*/*.srclist))) > $@.d.tmp
+	cmp --silent $@.d.tmp $@.d || mv $@.d.tmp $@.d
 # From sh source
-	cat $(PO)/domains/$*/*.shlist 2> /dev/null | (cd $(BASE) && xargs -n1 bash --dump-po-strings) > $(PO)/domains/$*/sh.pot
+	cat $(PO)/domains/$*/*.shlist 2> /dev/null | (cd $(BASE) && xargs -n1 bash --dump-po-strings) > $(PO)/domains/$*/sh.pot.tmp
+	cmp --silent $(PO)/domains/$*/sh.pot.tmp $(PO)/domains/$*/sh.pot || \
+		mv $(PO)/domains/$*/sh.pot.tmp $(PO)/domains/$*/sh.pot
 # From C/C++ source
 	cat $(PO)/domains/$*/*.srclist > $(PO)/POTFILES_$*.in
 	$(XGETTEXT) --default-domain=$* --directory=$(BASE) \
 	  --add-comments --foreign --keyword=_ --keyword=N_ \
 	  --keyword=P_:1,2 \
-	  --files-from=$(PO)/POTFILES_$*.in -o $(PO)/domains/$*/c.pot
+	  --files-from=$(PO)/POTFILES_$*.in -o $(PO)/domains/$*/c.pot.tmp
+	cmp --silent $(PO)/domains/$*/c.pot.tmp $(PO)/domains/$*/c.pot || \
+		mv $(PO)/domains/$*/c.pot.tmp $(PO)/domains/$*/c.pot
 	rm -f $(PO)/POTFILES_$*.in
-	$(MSGCOMM) --omit-header --more-than=0 $(PO)/domains/$*/c.pot $(PO)/domains/$*/sh.pot --output=$@
+	$(MSGCOMM) --omit-header --more-than=0 $(PO)/domains/$*/c.pot $(PO)/domains/$*/sh.pot --output=$@.tmp
+	cmp --silent $@ $@.tmp || mv $@.tmp $@
 	# copy into the domain dirs to make rosetta happy
 	rm -f $(PO)/domains/$*/*.pot
 	cp $@ $(PO)/domains/$*
@@ -93,4 +99,5 @@ ifneq ($(words $(The_DFiles)),0)
 include $(The_DFiles)
 endif
 
+# otherwise the output is completely screwed
 .NOTPARALLEL:
-- 
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