* INSTALL: Document `--with-xinput2'.

diff --git a/INSTALL b/INSTALL
index 21298422af7de1be5c2eed4d594b72f915ec4da3..9ecc50b6a8f7a44dddbcc717d4d657eb7cc67366 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -324,6 +324,10 @@ Use --without-toolkit-scroll-bars to disable Motif or Xaw3d scroll bars.
 Use --without-xim to inhibit the default use of X Input Methods.
 In this case, the X resource useXIM can be used to turn on use of XIM.
 
+Use --with-xinput2 to enable the use of version 2 of the X Input
+Extension.  This enables support for touchscreens, pinch gestures, and
+scroll wheels that report scroll deltas at pixel-level precision.
+
 Use --disable-largefile to omit support for files larger than 2GB, and
 --disable-year2038 to omit support for timestamps past the year 2038,
 on systems which allow omitting such support.  This may help when