[waffle] [PATCH] cmake: Find and set include path for wglext.h

[jfonseca at vmware.com]

From: José Fonseca <jfonseca at vmware.com>

GL/*glext.h is not provided by the system (be it MinGW or MSVC), so its
path must be specified separately.

I used GLEXT_INCLUDE_DIR, which is the name also used for Piglit, so
that existing CMake initial caches might already provide it.
---
 cmake/Modules/WaffleFindDependencies.cmake | 6 ++++++
 src/waffle/CMakeLists.txt                  | 1 +
 2 files changed, 7 insertions(+)

diff --git a/cmake/Modules/WaffleFindDependencies.cmake b/cmake/Modules/WaffleFindDependencies.cmake
index 9245772..1c617f7 100644
--- a/cmake/Modules/WaffleFindDependencies.cmake
+++ b/cmake/Modules/WaffleFindDependencies.cmake
@@ -80,3 +80,9 @@ if(waffle_on_linux)
     waffle_pkg_config(gbm gbm)
     waffle_pkg_config(libudev libudev)
 endif()
+
+
+if(waffle_on_windows)
+    find_package(OpenGL REQUIRED)
+    find_path(GLEXT_INCLUDE_DIR NAMES GL/wglext.h DOC "Include for GL/wglext.h")
+endif()
diff --git a/src/waffle/CMakeLists.txt b/src/waffle/CMakeLists.txt
index 5c63c47..aef0952 100644
--- a/src/waffle/CMakeLists.txt
+++ b/src/waffle/CMakeLists.txt
@@ -23,6 +23,7 @@ include_directories(
     ${egl_INCLUDE_DIRS}
     ${gbm_INCLUDE_DIRS}
     ${gl_INCLUDE_DIRS}
+    ${GLEXT_INCLUDE_DIR}
     ${libudev_INCLUDE_DIRS}
     ${wayland-client_INCLUDE_DIRS}
     ${wayland-egl_INCLUDE_DIRS}
-- 
1.9.1