commit 1361899d1a336938811eceb17e2f71abe650ae17
Author: Davide Viti <zinosat@tiscali.it>
Date:   Sun Nov 9 21:37:28 2014 +0100

    Add "WITH_OPENGL" option to make OpenGL and Glut inclusion conditional

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6cc473d..7fda151 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -403,7 +403,10 @@ if(WITH_PCAP)
 endif(WITH_PCAP)
 
 # OpenGL and GLUT
-include("${PCL_SOURCE_DIR}/cmake/pcl_find_gl.cmake")
+option(WITH_OPENGL "Support for OpenGL" TRUE)
+if(WITH_OPENGL)
+  include("${PCL_SOURCE_DIR}/cmake/pcl_find_gl.cmake")
+endif(WITH_OPENGL)
 
 ### ---[ Create the config.h file
 set(pcl_config_h_in "${CMAKE_CURRENT_SOURCE_DIR}/pcl_config.h.in")