[gtk+/multitouch: 71/129] configure: Detect XInput 2.1



commit 5c98ea081ef5cb8809f6b0b248270697bbf44d4e
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Feb 28 20:43:03 2011 +0100

    configure: Detect XInput 2.1

 configure.ac |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 75761d5..0960ffb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1126,6 +1126,10 @@ if test "x$enable_x11_backend" = xyes; then
                     AC_DEFINE(XINPUT_2, 1, [Define to 1 if XInput 2.0 is available]),
                     X_EXTENSIONS="$X_EXTENSIONS XInput")
 
+    gtk_save_LIBS="$LIBS"
+    LIBS="$LIBS -lXi"
+    AC_CHECK_FUNC(XIAllowTouchEvents, AC_DEFINE(XINPUT_2_1, 1, [Define to 1 if XInput 2.1 is available]))
+    LIBS="$gtk_save_LIBS"
   else
     AC_DEFINE(XINPUT_NONE, 1,
               [Define to 1 if no XInput should be used])



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