I686LINUX/util/I686LINUX/share/CMake/Modules/FindOpenGL.cmake

   1 # Try to find OpenGL
   2 # Once done this will define
   3 #
   4 # OPENGL_FOUND        - system has OpenGL and it should be used
   5 # OPENGL_XMESA_FOUND  - system has XMESA, and it should be used.
   6 # OPENGL_GLU_FOUND    - system has GLU and it should be used.
   7 # OPENGL_INCLUDE_DIR  - where the GL include directory can be found
   8 # OPENGL_LIBRARIES    - Link these to use OpenGL
   9 #
  10 #
  11 # Also defined, but not for general use are
  12 # OPENGL_gl_LIBRARY   - Path to OpenGL Library
  13 # OPENGL_glu_LIBRARY  - Path to GLU Library
  14 #
  15
  16 # On OSX default to using the framework version of opengl
  17 # People will have to change the cache values of OPENGL_glu_LIBRARY
  18 # and OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX
  19 IF (APPLE)
  20   SET (OPENGL_gl_LIBRARY "-framework OpenGL" CACHE STRING "OpenGL lib for OSX")
  21   SET (OPENGL_glu_LIBRARY "-framework AGL" CACHE STRING "AGL lib for OSX")
  22 ENDIF (APPLE)
  23
  24 IF (WIN32)
  25   IF (CYGWIN)
  26
  27     FIND_PATH(OPENGL_INCLUDE_DIR GL/gl.h
  28       /usr/include
  29       /usr/include/w32api
  30       /usr/X11R6/include
  31     )
  32
  33     FIND_LIBRARY(OPENGL_gl_LIBRARY opengl32
  34       /usr/lib
  35       /usr/lib/w32api
  36     )
  37
  38     FIND_LIBRARY(OPENGL_glu_LIBRARY glu32
  39       /usr/lib
  40       /usr/lib/w32api
  41     )
  42
  43   ELSE (CYGWIN)
  44
  45     IF(BORLAND)
  46       SET (OPENGL_gl_LIBRARY import32 CACHE STRING "OpenGL library for win32")
  47       SET (OPENGL_glu_LIBRARY import32 CACHE STRING "GLU library for win32")
  48     ELSE(BORLAND)
  49       SET (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32")
  50       SET (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32")
  51     ENDIF(BORLAND)
  52
  53   ENDIF (CYGWIN)
  54
  55 ELSE (WIN32)
  56
  57   # The first line below is to make sure that the proper headers
  58   # are used on a Linux machine with the NVidia drivers installed.
  59   # They replace Mesa with NVidia's own library but normally do not
  60   # install headers and that causes the linking to
  61   # fail since the compiler finds the Mesa headers but NVidia's library.
  62   # Make sure the NVIDIA directory comes BEFORE the others.
  63   #  - Atanas Georgiev <atanas@cs.columbia.edu>
  64
  65   FIND_PATH(OPENGL_INCLUDE_DIR GL/gl.h
  66     /usr/share/doc/NVIDIA_GLX-1.0/include
  67     /usr/include
  68     /usr/local/include
  69     /usr/openwin/share/include
  70     /opt/graphics/OpenGL/include
  71     /usr/X11R6/include
  72   )
  73
  74   FIND_PATH(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h
  75     /usr/share/doc/NVIDIA_GLX-1.0/include
  76     /usr/include
  77     /usr/local/include
  78     /usr/openwin/share/include
  79     /opt/graphics/OpenGL/include
  80     /usr/X11R6/include
  81   )
  82
  83   FIND_LIBRARY(OPENGL_gl_LIBRARY
  84     NAMES MesaGL GL
  85     PATHS /usr/lib
  86           /usr/local/lib
  87           /opt/graphics/OpenGL/lib
  88           /usr/openwin/lib
  89           /usr/X11R6/lib
  90   )
  91
  92   # On Unix OpenGL most certainly always requires X11.
  93   # Feel free to tighten up these conditions if you don't
  94   # think this is always true.
  95
  96   IF (OPENGL_gl_LIBRARY)
  97     INCLUDE( ${CMAKE_ROOT}/Modules/FindX11.cmake )
  98     IF (X11_FOUND)
  99       SET (OPENGL_LIBRARIES ${X11_LIBRARIES})
 100     ENDIF (X11_FOUND)
 101   ENDIF (OPENGL_gl_LIBRARY)
 102
 103   FIND_LIBRARY(OPENGL_glu_LIBRARY
 104     NAMES MesaGLU GLU
 105     PATHS ${OPENGL_gl_LIBRARY}
 106           /usr/lib
 107           /usr/local/lib
 108           /opt/graphics/OpenGL/lib
 109           /usr/openwin/lib
 110           /usr/X11R6/lib
 111   )
 112
 113 ENDIF (WIN32)
 114
 115 SET( OPENGL_FOUND "NO" )
 116 IF(OPENGL_gl_LIBRARY)
 117
 118     IF(OPENGL_xmesa_INCLUDE_DIR)
 119       SET( OPENGL_XMESA_FOUND "YES" )
 120     ELSE(OPENGL_xmesa_INCLUDE_DIR)
 121       SET( OPENGL_XMESA_FOUND "NO" )
 122     ENDIF(OPENGL_xmesa_INCLUDE_DIR)
 123
 124     SET( OPENGL_LIBRARIES  ${OPENGL_gl_LIBRARY} ${OPENGL_LIBRARIES})
 125     IF(OPENGL_glu_LIBRARY)
 126       SET( OPENGL_GLU_FOUND "YES" )
 127       SET( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_LIBRARIES} )
 128     ELSE(OPENGL_glu_LIBRARY)
 129       SET( OPENGL_GLU_FOUND "NO" )
 130     ENDIF(OPENGL_glu_LIBRARY)
 131
 132     SET( OPENGL_FOUND "YES" )
 133
 134     # This deprecated setting is for backward compatibility with CMake1.4
 135
 136     SET (OPENGL_LIBRARY ${OPENGL_LIBRARIES})
 137
 138 ENDIF(OPENGL_gl_LIBRARY)
 139
 140 # This deprecated setting is for backward compatibility with CMake1.4
 141 SET(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})
 142
 143 MARK_AS_ADVANCED(
 144   OPENGL_INCLUDE_DIR
 145   OPENGL_xmesa_INCLUDE_DIR
 146   OPENGL_glu_LIBRARY
 147   OPENGL_gl_LIBRARY
 148 )