From: Luigi Rizzo <rizzo@icir.org>
Date: Sun, 23 Dec 2007 12:29:48 +0000 (+0000)
Subject: avoid rebuilding dependent files if the generated busy.h and ringtone.h
X-Git-Tag: 1.6.0-beta1~3^2~317
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31dcae3ae0ed842cf8d0bacf90315af07f409f82;p=thirdparty%2Fasterisk.git

avoid rebuilding dependent files if the generated busy.h and ringtone.h
do not change.

Ths masks (but does not solve) a but that i am seeing in doing a
'gmake install' without donig a 'gmake all' first.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@94713 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/channels/Makefile b/channels/Makefile
index 50df82c580..757f209674 100644
--- a/channels/Makefile
+++ b/channels/Makefile
@@ -89,10 +89,16 @@ gentone: gentone.c
 	$(CMD_PREFIX) $(HOST_CC) -o $@ $^ -lm
 
 busy.h: gentone
+	-@mv $@ $@.tmp
 	./gentone busy 480 620
+	@cmp -s $@.tmp $@ && mv $@.tmp $@
+	-@rm -f  $@.tmp
 
 ringtone.h: gentone
+	-@mv $@ $@.tmp
 	./gentone ringtone 440 480
+	@cmp -s $@.tmp $@ && mv $@.tmp $@
+	-@rm -f  $@.tmp
 
 $(if $(filter chan_iax2,$(EMBEDDED_MODS)),modules.link,chan_iax2.so): iax2-parser.o iax2-provision.o