cmake/Modules/FindOpenGLES2.cmake

   1 #-------------------------------------------------------------------
   2 # This file is stolen from part of the CMake build system for OGRE (Object-oriented Graphics Rendering Engine) http://www.ogre3d.org/
   3 #
   4 # The contents of this file are placed in the public domain. Feel
   5 # free to make use of it in any way you like.
   6 #-------------------------------------------------------------------
   7
   8 # - Try to find OpenGLES and EGL
   9 # Once done this will define
  10 #
  11 #  OPENGLES2_FOUND        - system has OpenGLES
  12 #  OPENGLES2_INCLUDE_DIR  - the GL include directory
  13 #  OPENGLES2_LIBRARIES    - Link these to use OpenGLES
  14 #
  15 #  EGL_FOUND        - system has EGL
  16 #  EGL_INCLUDE_DIR  - the EGL include directory
  17 #  EGL_LIBRARIES    - Link these to use EGL
  18
  19 # Win32, Apple, and Android are not tested!
  20 # Linux tested and works
  21
  22 if(WIN32)
  23         if(CYGWIN)
  24                 find_path(OPENGLES2_INCLUDE_DIR GLES2/gl2.h)
  25                 find_library(OPENGLES2_LIBRARY libGLESv2)
  26         else()
  27                 if(BORLAND)
  28                         set(OPENGLES2_LIBRARY import32 CACHE STRING "OpenGL ES 2.x library for Win32")
  29                 else()
  30                         # TODO
  31                         # set(OPENGLES_LIBRARY ${SOURCE_DIR}/Dependencies/lib/release/libGLESv2.lib CACHE STRING "OpenGL ES 2.x library for win32"
  32                 else()
  33         endif()
  34 elseif(APPLE)
  35         create_search_paths(/Developer/Platforms)
  36         findpkg_framework(OpenGLES2)
  37         set(OPENGLES2_LIBRARY "-framework OpenGLES")
  38 else()
  39         find_path(OPENGLES2_INCLUDE_DIR GLES2/gl2.h
  40                 PATHS /usr/openwin/share/include
  41                         /opt/graphics/OpenGL/include
  42                         /usr/X11R6/include
  43                         /usr/include
  44         )
  45
  46         find_library(OPENGLES2_LIBRARY
  47                 NAMES GLESv2
  48                 PATHS /opt/graphics/OpenGL/lib
  49                         /usr/openwin/lib
  50                         /usr/shlib /usr/X11R6/lib
  51                         /usr/lib
  52         )
  53
  54         if(NOT BUILD_ANDROID)
  55                 find_path(EGL_INCLUDE_DIR EGL/egl.h
  56                         PATHS /usr/openwin/share/include
  57                                 /opt/graphics/OpenGL/include
  58                                 /usr/X11R6/include
  59                                 /usr/include
  60                 )
  61
  62                 find_library(EGL_LIBRARY
  63                         NAMES EGL
  64                         PATHS /opt/graphics/OpenGL/lib
  65                                 /usr/openwin/lib
  66                                 /usr/shlib
  67                                 /usr/X11R6/lib
  68                                 /usr/lib
  69                 )
  70
  71                 # On Unix OpenGL usually requires X11.
  72                 # It doesn't require X11 on OSX.
  73
  74                 if(OPENGLES2_LIBRARY)
  75                         if(NOT X11_FOUND)
  76                                 include(FindX11)
  77                         endif()
  78                         if(X11_FOUND)
  79                                 set(OPENGLES2_LIBRARIES ${X11_LIBRARIES})
  80                         endif()
  81                 endif()
  82         endif()
  83 endif()
  84
  85 set(OPENGLES2_LIBRARIES ${OPENGLES2_LIBRARIES} ${OPENGLES2_LIBRARY})
  86
  87 if(BUILD_ANDROID)
  88         if(OPENGLES2_LIBRARY)
  89                 set(EGL_LIBRARIES)
  90                 set(OPENGLES2_FOUND TRUE)
  91         endif()
  92 else()
  93         if(OPENGLES2_LIBRARY AND EGL_LIBRARY)
  94                 set(OPENGLES2_LIBRARIES ${OPENGLES2_LIBRARY} ${OPENGLES2_LIBRARIES})
  95                 set(EGL_LIBRARIES ${EGL_LIBRARY} ${EGL_LIBRARIES})
  96                 set(OPENGLES2_FOUND TRUE)
  97         endif()
  98 endif()
  99
 100 mark_as_advanced(
 101         OPENGLES2_INCLUDE_DIR
 102         OPENGLES2_LIBRARY
 103         EGL_INCLUDE_DIR
 104         EGL_LIBRARY
 105 )
 106
 107 if(OPENGLES2_FOUND)
 108         message(STATUS "Found system OpenGL ES 2 library: ${OPENGLES2_LIBRARIES}")
 109 else()
 110         set(OPENGLES2_LIBRARIES "")
 111 endif()
 112