+# Check whether --enable-threads or --disable-threads was given.
+if test "${enable_threads+set}" = set; then
+ enableval="$enable_threads"
+
+else
+ enableval=yes
+fi;
+case "$enableval" in
+ yes) ENABLE_THREADS=1
+ ;;
+ no) ENABLE_THREADS=0
+ ;;
+ *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-threads. Use \"yes\" or \"no\"" >&5
+echo "$as_me: error: Invalid setting for --enable-threads. Use \"yes\" or \"no\"" >&2;}
+ { (exit 1); exit 1; }; } ;;
+esac
+
+cat >>confdefs.h <<_ACEOF
+#define ENABLE_THREADS $ENABLE_THREADS
+_ACEOF
+
+