[FFmpeg-cvslog] r21318 - trunk/configure

[mru]

Author: mru
Date: Tue Jan 19 05:40:08 2010
New Revision: 21318

Log:
configure: add cp_if_changed function and use for config.h

Modified:
   trunk/configure

Modified: trunk/configure
==============================================================================
--- trunk/configure	Tue Jan 19 05:00:08 2010	(r21317)
+++ trunk/configure	Tue Jan 19 05:40:08 2010	(r21318)
@@ -831,6 +831,12 @@ apply(){
     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
 }
 
+cp_if_changed(){
+    cmp -s "$1" "$2" &&
+        echo "$2 is unchanged" ||
+        cp -f "$1" "$2"
+}
+
 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 # system-dependent things.
 
@@ -2909,9 +2915,7 @@ echo "#endif /* FFMPEG_CONFIG_H */" >> $
 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
 
 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
-cmp -s $TMPH config.h &&
-    echo "config.h is unchanged" ||
-    mv -f $TMPH config.h
+cp_if_changed $TMPH config.h
 
 # build tree in object directory if source path is different from current one
 if enabled source_path_used; then