Multi-touch: fix CMake: Xi and XInput2.h detection wasn't ported from autoconf, effectively disabling multi-touch

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1315 7f0cb862-5218-0410-a997-914c9d46530a

freeglut/freeglut/CMakeLists.txt

@@ -207,6 +207,7 @@ IF(CMAKE_COMPILER_IS_GNUCC)
   ENDIF()
 ENDIF(CMAKE_COMPILER_IS_GNUCC)
 
+INCLUDE(CheckIncludeFiles)
 IF(UNIX AND NOT ANDROID)
     FIND_PACKAGE(X11 REQUIRED)
     LIST(APPEND LIBS ${X11_LIBRARIES})
@@ -222,6 +223,10 @@ IF(UNIX AND NOT ANDROID)
         ENDIF()
         LIST(APPEND LIBS ${X11_Xxf86vm_LIB})
     ENDIF()
+    IF(X11_Xinput_FOUND)
+        CHECK_INCLUDE_FILES("${X11_Xinput_INCLUDE_PATH}/X11/extensions/XInput2.h" HAVE_X11_EXTENSIONS_XINPUT2_H)
+        LIST(APPEND LIBS ${X11_Xinput_LIB})
+    ENDIF()
 ENDIF()
 IF(ANDROID)
     # -landroid for ANativeWindow
@@ -229,7 +234,6 @@ IF(ANDROID)
     LIST(APPEND LIBS android log)
 ENDIF()
 
-INCLUDE(CheckIncludeFiles)
 INCLUDE(CheckFunctionExists)
 INCLUDE(CheckTypeSize)
 CHECK_INCLUDE_FILES(sys/types.h HAVE_SYS_TYPES_H)

freeglut/freeglut/config.h.in

@@ -1,5 +1,6 @@
 #cmakedefine HAVE_X11_EXTENSIONS_XF86VMODE_H
 #cmakedefine HAVE_X11_EXTENSIONS_XRANDR_H
+#cmakedefine HAVE_X11_EXTENSIONS_XINPUT2_H
 #cmakedefine HAVE_SYS_TYPES_H
 #cmakedefine HAVE_UNISTD_H
 #cmakedefine HAVE_SYS_TIME_H

freeglut/freeglut/src/x11/fg_xinput_x11.c

@@ -5,7 +5,7 @@
 
 #include "../fg_internal.h"
 
-#if HAVE_X11_EXTENSIONS_XINPUT2_H
+#ifdef HAVE_X11_EXTENSIONS_XINPUT2_H
 
 #include <errno.h>
 #include <stdarg.h>