From 5633cde9adda2fa03e60f962260038f4937ed8b4 Mon Sep 17 00:00:00 2001
From: Abhijit Kundu <abhijit.kundu@gatech.edu>
Date: Thu, 4 Dec 2014 01:18:47 -0500
Subject: [PATCH] Adding missing OPENGL_LIBRARIES for openglsupport test. Also
 adding OpenGL include directories as a better pratice even though these are
 system include directories in most systems. (grafted from
 48db34a7b90f07c9abec453f072b4f813a14ea07 )

---
 unsupported/test/CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/unsupported/test/CMakeLists.txt b/unsupported/test/CMakeLists.txt
index a94a3b5e5..10aade480 100644
--- a/unsupported/test/CMakeLists.txt
+++ b/unsupported/test/CMakeLists.txt
@@ -73,8 +73,9 @@ if(NOT EIGEN_TEST_NO_OPENGL)
   find_package(GLUT)
   find_package(GLEW)
   if(OPENGL_FOUND AND GLUT_FOUND AND GLEW_FOUND)
+    include_directories(${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR} ${GLEW_INCLUDE_DIRS})
     ei_add_property(EIGEN_TESTED_BACKENDS "OpenGL, ")
-    set(EIGEN_GL_LIB ${GLUT_LIBRARIES} ${GLEW_LIBRARIES})
+    set(EIGEN_GL_LIB ${GLUT_LIBRARIES} ${GLEW_LIBRARIES} ${OPENGL_LIBRARIES})
     ei_add_test(openglsupport  "" "${EIGEN_GL_LIB}" )
   else()
     ei_add_property(EIGEN_MISSING_BACKENDS "OpenGL, ")