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1 #.rst: |
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2 # FindOpenGL |
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3 # ---------- |
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4 # |
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5 # FindModule for OpenGL and GLU. |
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6 # |
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7 # Result Variables |
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8 # ^^^^^^^^^^^^^^^^ |
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9 # |
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10 # This module sets the following variables: |
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11 # |
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12 # ``OPENGL_FOUND`` |
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13 # True, if the system has OpenGL. |
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14 # ``OPENGL_XMESA_FOUND`` |
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15 # True, if the system has XMESA. |
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16 # ``OPENGL_GLU_FOUND`` |
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17 # True, if the system has GLU. |
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18 # ``OPENGL_INCLUDE_DIR`` |
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19 # Path to the OpenGL include directory. |
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20 # ``OPENGL_LIBRARIES`` |
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21 # Paths to the OpenGL and GLU libraries. |
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22 # |
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23 # If you want to use just GL you can use these values: |
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24 # |
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25 # ``OPENGL_gl_LIBRARY`` |
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26 # Path to the OpenGL library. |
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27 # ``OPENGL_glu_LIBRARY`` |
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28 # Path to the GLU library. |
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29 # |
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30 # OSX Specific |
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31 # ^^^^^^^^^^^^ |
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32 # |
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33 # On OSX default to using the framework version of OpenGL. People will |
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34 # have to change the cache values of OPENGL_glu_LIBRARY and |
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35 # OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX. |
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36 |
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37 |
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38 #============================================================================= |
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39 # Copyright 2001-2009 Kitware, Inc. |
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40 # |
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41 # Distributed under the OSI-approved BSD License (the "License"); |
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42 # see accompanying file Copyright.txt for details. |
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43 # |
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44 # This software is distributed WITHOUT ANY WARRANTY; without even the |
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45 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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46 # See the License for more information. |
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47 #============================================================================= |
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48 # (To distribute this file outside of CMake, substitute the full |
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49 # License text for the above reference.) |
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50 |
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51 set(_OpenGL_REQUIRED_VARS OPENGL_gl_LIBRARY) |
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52 |
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53 if (CYGWIN) |
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54 |
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55 find_path(OPENGL_INCLUDE_DIR GL/gl.h ) |
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56 list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR) |
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57 |
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58 find_library(OPENGL_gl_LIBRARY opengl32 ) |
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59 |
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60 find_library(OPENGL_glu_LIBRARY glu32 ) |
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61 |
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62 elseif (WIN32) |
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63 |
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64 if(BORLAND) |
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65 set (OPENGL_gl_LIBRARY import32 CACHE STRING "OpenGL library for win32") |
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66 set (OPENGL_glu_LIBRARY import32 CACHE STRING "GLU library for win32") |
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67 else() |
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68 set (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32") |
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69 set (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32") |
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70 endif() |
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71 |
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72 elseif (APPLE) |
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73 |
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74 # The OpenGL.framework provides both gl and glu |
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75 find_library(OPENGL_gl_LIBRARY OpenGL DOC "OpenGL library for OS X") |
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76 find_library(OPENGL_glu_LIBRARY OpenGL DOC |
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77 "GLU library for OS X (usually same as OpenGL library)") |
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78 find_path(OPENGL_INCLUDE_DIR OpenGL/gl.h DOC "Include for OpenGL on OS X") |
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79 list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR) |
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80 |
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81 else() |
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82 if (CMAKE_SYSTEM_NAME MATCHES "HP-UX") |
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83 # Handle HP-UX cases where we only want to find OpenGL in either hpux64 |
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84 # or hpux32 depending on if we're doing a 64 bit build. |
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85 if(CMAKE_SIZEOF_VOID_P EQUAL 4) |
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86 set(_OPENGL_LIB_PATH |
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87 /opt/graphics/OpenGL/lib/hpux32/) |
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88 else() |
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89 set(_OPENGL_LIB_PATH |
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90 /opt/graphics/OpenGL/lib/hpux64/ |
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91 /opt/graphics/OpenGL/lib/pa20_64) |
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92 endif() |
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93 elseif(CMAKE_SYSTEM_NAME STREQUAL Haiku) |
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94 set(_OPENGL_LIB_PATH |
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95 /boot/develop/lib/x86) |
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96 set(_OPENGL_INCLUDE_PATH |
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97 /boot/develop/headers/os/opengl) |
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98 endif() |
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99 |
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100 # The first line below is to make sure that the proper headers |
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101 # are used on a Linux machine with the NVidia drivers installed. |
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102 # They replace Mesa with NVidia's own library but normally do not |
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103 # install headers and that causes the linking to |
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104 # fail since the compiler finds the Mesa headers but NVidia's library. |
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105 # Make sure the NVIDIA directory comes BEFORE the others. |
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106 # - Atanas Georgiev <atanas@cs.columbia.edu> |
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107 |
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108 find_path(OPENGL_INCLUDE_DIR GL/gl.h |
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109 /usr/share/doc/NVIDIA_GLX-1.0/include |
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110 /usr/openwin/share/include |
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111 /opt/graphics/OpenGL/include /usr/X11R6/include |
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112 ${_OPENGL_INCLUDE_PATH} |
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113 ) |
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114 list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR) |
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115 |
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116 find_path(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h |
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117 /usr/share/doc/NVIDIA_GLX-1.0/include |
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118 /usr/openwin/share/include |
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119 /opt/graphics/OpenGL/include /usr/X11R6/include |
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120 ) |
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121 |
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122 find_library(OPENGL_gl_LIBRARY |
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123 NAMES GL MesaGL |
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124 PATHS /opt/graphics/OpenGL/lib |
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125 /usr/openwin/lib |
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126 /usr/shlib /usr/X11R6/lib |
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127 ${_OPENGL_LIB_PATH} |
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128 ) |
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129 |
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130 unset(_OPENGL_INCLUDE_PATH) |
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131 unset(_OPENGL_LIB_PATH) |
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132 |
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133 find_library(OPENGL_glu_LIBRARY |
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134 NAMES GLU MesaGLU |
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135 PATHS ${OPENGL_gl_LIBRARY} |
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136 /opt/graphics/OpenGL/lib |
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137 /usr/openwin/lib |
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138 /usr/shlib /usr/X11R6/lib |
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139 ) |
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140 |
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141 endif () |
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142 |
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143 if(OPENGL_gl_LIBRARY) |
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144 |
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145 if(OPENGL_xmesa_INCLUDE_DIR) |
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146 set( OPENGL_XMESA_FOUND "YES" ) |
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147 else() |
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148 set( OPENGL_XMESA_FOUND "NO" ) |
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149 endif() |
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150 |
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151 set( OPENGL_LIBRARIES ${OPENGL_gl_LIBRARY} ${OPENGL_LIBRARIES}) |
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152 if(OPENGL_glu_LIBRARY) |
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153 set( OPENGL_GLU_FOUND "YES" ) |
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154 if(NOT "${OPENGL_glu_LIBRARY}" STREQUAL "${OPENGL_gl_LIBRARY}") |
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155 set( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_LIBRARIES} ) |
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156 endif() |
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157 else() |
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158 set( OPENGL_GLU_FOUND "NO" ) |
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159 endif() |
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160 |
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161 # This deprecated setting is for backward compatibility with CMake1.4 |
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162 set (OPENGL_LIBRARY ${OPENGL_LIBRARIES}) |
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163 |
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164 endif() |
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165 |
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166 # This deprecated setting is for backward compatibility with CMake1.4 |
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167 set(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR}) |
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168 |
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169 if(BUILD_ENGINE_JS) |
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170 # The implementation is based on the standard FindOpenGL.cmake provided |
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171 # with CMake, but customized for targeting Emscripten only. |
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172 |
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173 # These libraries are provided with Emscripten |
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174 SET(OPENGL_FOUND TRUE) |
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175 SET(OPENGL_GLU_FOUND TRUE) |
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176 |
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177 # Doesn't look like this one is part of Emscripten |
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178 SET(OPENGL_XMESA_FOUND FALSE) |
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179 |
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180 # This is the path where <GL/gl.h> is found |
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181 SET(OPENGL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include") |
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182 |
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183 # No library to link against for OpenGL, since Emscripten picks it up |
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184 # automatically from library_gl.js, but need to report something, or |
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185 # CMake thinks we failed in the search. |
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186 SET(OPENGL_LIBRARIES "opengl_emscripten_internal") |
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187 SET(OPENGL_gl_LIBRARY "gl_emscripten_internal") |
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188 SET(OPENGL_glu_LIBRARY "glu_emscripten_internal") |
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189 |
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190 mark_as_advanced( |
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191 OPENGL_INCLUDE_DIR |
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192 OPENGL_glu_LIBRARY |
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193 OPENGL_gl_LIBRARY |
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194 ) |
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195 endif() |
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196 |
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197 # handle the QUIETLY and REQUIRED arguments and set OPENGL_FOUND to TRUE if |
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198 # all listed variables are TRUE |
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199 INCLUDE(FindPackageHandleStandardArgs) |
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200 |
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201 FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenGL REQUIRED_VARS ${_OpenGL_REQUIRED_VARS}) |
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202 unset(_OpenGL_REQUIRED_VARS) |
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203 |
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204 mark_as_advanced( |
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205 OPENGL_INCLUDE_DIR |
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206 OPENGL_xmesa_INCLUDE_DIR |
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207 OPENGL_glu_LIBRARY |
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208 OPENGL_gl_LIBRARY |
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209 ) |