cmake_modules/FindOpenGL.cmake
author Wuzzy <Wuzzy2@mail.ru>
Fri, 09 Mar 2018 19:05:59 +0100
changeset 13145 5083fb0a2992
parent 11658 f87ed83568c8
permissions -rw-r--r--
A Classic Fairytale: Harden all missions against missing campaign variables in team file and assume default values This assumes the worst case in which the team file is missing all campaign variables except Progress. This has been successfully tested with all 10 missions and still generates a logical storyline. By default, the game assumes: - The cyborg's offer in mission 2 was refused - The traitor in mission 5 was killed As a consequence, missions 8 and 10 use the princessScene cut scene.
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#.rst:
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# FindOpenGL
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# ----------
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#
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# FindModule for OpenGL and GLU.
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#
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# Result Variables
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# ^^^^^^^^^^^^^^^^
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#
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# This module sets the following variables:
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#
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# ``OPENGL_FOUND``
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#  True, if the system has OpenGL.
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# ``OPENGL_XMESA_FOUND``
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#  True, if the system has XMESA.
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# ``OPENGL_GLU_FOUND``
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#  True, if the system has GLU.
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# ``OPENGL_INCLUDE_DIR``
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#  Path to the OpenGL include directory.
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# ``OPENGL_LIBRARIES``
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#  Paths to the OpenGL and GLU libraries.
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#
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# If you want to use just GL you can use these values:
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#
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# ``OPENGL_gl_LIBRARY``
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#  Path to the OpenGL library.
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# ``OPENGL_glu_LIBRARY``
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#  Path to the GLU library.
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#
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# OSX Specific
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# ^^^^^^^^^^^^
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#
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# On OSX default to using the framework version of OpenGL. People will
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# have to change the cache values of OPENGL_glu_LIBRARY and
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# OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX.
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#=============================================================================
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# Copyright 2001-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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#  License text for the above reference.)
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set(_OpenGL_REQUIRED_VARS OPENGL_gl_LIBRARY)
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if (CYGWIN)
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  find_path(OPENGL_INCLUDE_DIR GL/gl.h )
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  list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
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  find_library(OPENGL_gl_LIBRARY opengl32 )
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  find_library(OPENGL_glu_LIBRARY glu32 )
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elseif (WIN32)
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  if(BORLAND)
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    set (OPENGL_gl_LIBRARY import32 CACHE STRING "OpenGL library for win32")
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    set (OPENGL_glu_LIBRARY import32 CACHE STRING "GLU library for win32")
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  else()
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    set (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32")
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    set (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32")
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  endif()
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elseif (APPLE)
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  # The OpenGL.framework provides both gl and glu
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  find_library(OPENGL_gl_LIBRARY OpenGL DOC "OpenGL library for OS X")
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  find_library(OPENGL_glu_LIBRARY OpenGL DOC
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    "GLU library for OS X (usually same as OpenGL library)")
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  find_path(OPENGL_INCLUDE_DIR OpenGL/gl.h DOC "Include for OpenGL on OS X")
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  list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
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else()
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  if (CMAKE_SYSTEM_NAME MATCHES "HP-UX")
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    # Handle HP-UX cases where we only want to find OpenGL in either hpux64
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    # or hpux32 depending on if we're doing a 64 bit build.
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    if(CMAKE_SIZEOF_VOID_P EQUAL 4)
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      set(_OPENGL_LIB_PATH
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        /opt/graphics/OpenGL/lib/hpux32/)
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    else()
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      set(_OPENGL_LIB_PATH
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        /opt/graphics/OpenGL/lib/hpux64/
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        /opt/graphics/OpenGL/lib/pa20_64)
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    endif()
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  elseif(CMAKE_SYSTEM_NAME STREQUAL Haiku)
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    set(_OPENGL_LIB_PATH
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      /boot/develop/lib/x86)
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    set(_OPENGL_INCLUDE_PATH
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      /boot/develop/headers/os/opengl)
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  endif()
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  # The first line below is to make sure that the proper headers
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  # are used on a Linux machine with the NVidia drivers installed.
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  # They replace Mesa with NVidia's own library but normally do not
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  # install headers and that causes the linking to
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  # fail since the compiler finds the Mesa headers but NVidia's library.
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  # Make sure the NVIDIA directory comes BEFORE the others.
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  #  - Atanas Georgiev <atanas@cs.columbia.edu>
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  find_path(OPENGL_INCLUDE_DIR GL/gl.h
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    /usr/share/doc/NVIDIA_GLX-1.0/include
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    /usr/openwin/share/include
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    /opt/graphics/OpenGL/include /usr/X11R6/include
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    ${_OPENGL_INCLUDE_PATH}
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  )
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  list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
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  find_path(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h
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    /usr/share/doc/NVIDIA_GLX-1.0/include
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    /usr/openwin/share/include
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    /opt/graphics/OpenGL/include /usr/X11R6/include
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  )
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  find_library(OPENGL_gl_LIBRARY
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    NAMES GL MesaGL
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    PATHS /opt/graphics/OpenGL/lib
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          /usr/openwin/lib
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          /usr/shlib /usr/X11R6/lib
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          ${_OPENGL_LIB_PATH}
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  )
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  unset(_OPENGL_INCLUDE_PATH)
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  unset(_OPENGL_LIB_PATH)
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  find_library(OPENGL_glu_LIBRARY
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    NAMES GLU MesaGLU
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    PATHS ${OPENGL_gl_LIBRARY}
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          /opt/graphics/OpenGL/lib
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          /usr/openwin/lib
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          /usr/shlib /usr/X11R6/lib
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  )
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endif ()
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if(OPENGL_gl_LIBRARY)
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    if(OPENGL_xmesa_INCLUDE_DIR)
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      set( OPENGL_XMESA_FOUND "YES" )
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    else()
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      set( OPENGL_XMESA_FOUND "NO" )
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    endif()
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    set( OPENGL_LIBRARIES  ${OPENGL_gl_LIBRARY} ${OPENGL_LIBRARIES})
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    if(OPENGL_glu_LIBRARY)
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      set( OPENGL_GLU_FOUND "YES" )
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      if(NOT "${OPENGL_glu_LIBRARY}" STREQUAL "${OPENGL_gl_LIBRARY}")
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        set( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_LIBRARIES} )
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      endif()
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    else()
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      set( OPENGL_GLU_FOUND "NO" )
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    endif()
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    # This deprecated setting is for backward compatibility with CMake1.4
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    set (OPENGL_LIBRARY ${OPENGL_LIBRARIES})
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endif()
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# This deprecated setting is for backward compatibility with CMake1.4
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set(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})
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if(BUILD_ENGINE_JS)
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    # The implementation is based on the standard FindOpenGL.cmake provided
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    # with CMake, but customized for targeting Emscripten only.
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    # These libraries are provided with Emscripten
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    SET(OPENGL_FOUND TRUE)
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    SET(OPENGL_GLU_FOUND TRUE)
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    # Doesn't look like this one is part of Emscripten
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    SET(OPENGL_XMESA_FOUND FALSE)
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    # This is the path where <GL/gl.h> is found
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    SET(OPENGL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include")
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    # No library to link against for OpenGL, since Emscripten picks it up
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    # automatically from library_gl.js, but need to report something, or
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    # CMake thinks we failed in the search.
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    SET(OPENGL_LIBRARIES "opengl_emscripten_internal")
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    SET(OPENGL_gl_LIBRARY "gl_emscripten_internal")
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    SET(OPENGL_glu_LIBRARY "glu_emscripten_internal")
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    mark_as_advanced(
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      OPENGL_INCLUDE_DIR
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      OPENGL_glu_LIBRARY
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      OPENGL_gl_LIBRARY
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    )
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endif()
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# handle the QUIETLY and REQUIRED arguments and set OPENGL_FOUND to TRUE if
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# all listed variables are TRUE
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INCLUDE(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenGL REQUIRED_VARS ${_OpenGL_REQUIRED_VARS})
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unset(_OpenGL_REQUIRED_VARS)
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mark_as_advanced(
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  OPENGL_INCLUDE_DIR
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  OPENGL_xmesa_INCLUDE_DIR
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  OPENGL_glu_LIBRARY
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  OPENGL_gl_LIBRARY
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)