+AUTOCONF="autoconf"
+
+# Discover what version of autoconf we are using.
+autoversion=`$AUTOCONF --version | head -n 1`
+
+echo "Using $autoversion"
+case $autoversion in
+ *2.13)
+ cp config/acconfig.h .
+ cp config/configure.in .
+ rm -f configure.ac
+ cp config/relyx_configure.in lib/reLyX/configure.in
+ rm -f lib/reLyX/configure.ac
+ ;;
+ *2.5[23])
+ rm -f acconfig.h
+ rm -f configure.in
+ cp config/configure.ac .
+ rm -f lib/reLyX/configure.in
+ cp config/relyx_configure.ac lib/reLyX/configure.ac
+ ;;
+ *)
+ echo "This autoconf version is not supported by LyX."
+ echo "LyX only supports autoconf 2.13 and 2.53."
+ exit
+ ;;
+esac
+