From d75d0a5171eb53db2bfae0fd18d431bc0cf32375 Mon Sep 17 00:00:00 2001
From: diego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Mon, 27 Aug 2007 11:40:25 +0000
Subject: Do not overwrite config.h unless it was changed. Mostly taken from
 FFmpeg.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24241 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 configure | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'configure')

diff --git a/configure b/configure
index 3976b9680c..ef154d4254 100755
--- a/configure
+++ b/configure
@@ -1298,6 +1298,7 @@ rm -f "$TMPLOG"
 TMPC="$I/mplayer-conf-$RANDOM-$$.c"
 TMPCPP="$I/mplayer-conf-$RANDOM-$$.cpp"
 TMPEXE="$I/mplayer-conf-$RANDOM-$$"
+TMPH="$I/mplayer-conf-$RANDOM-$$.h"
 TMPS="$I/mplayer-conf-$RANDOM-$$.S"
 
 echo configuration: $_configuration > "$TMPLOG"
@@ -7708,7 +7709,7 @@ done
 }
 
 echo "Creating config.h"
-cat > config.h << EOF
+cat > $TMPH << EOF
 /* -------- This file has been automatically generated by configure ---------
    Note: Any changes in it will be lost when you run configure again. */
 
@@ -8420,6 +8421,9 @@ $_def_xshape
 #endif /* MPLAYER_CONFIG_H */
 EOF
 
+# Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
+! cmp -s "$TMPH" config.h && mv -f "$TMPH" config.h
+
 #############################################################################
 
 cat << EOF
@@ -8512,4 +8516,4 @@ EOF
 fi
 
 # Last move:
-rm -f "$TMPEXE" "$TMPC" "$TMPS" "$TMPCPP"
+rm -f "$TMPEXE" "$TMPC" "$TMPS" "$TMPCPP" "$TMPH"
-- 
cgit v1.2.3