mirror of https://github.com/CGAL/cgal
68 lines
2.4 KiB
CMake
68 lines
2.4 KiB
CMake
include(ReadLines)
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include(FindMatchingItem)
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if ( OPENGL_FOUND AND OPENGL_INCLUDE_DIR )
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message( STATUS "OPENGL_INCLUDE_DIR=${OPENGL_INCLUDE_DIR}" )
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set( OPENGL_VERSION "unknown" )
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readlines(${OPENGL_INCLUDE_DIR}/GL/gl.h OPENGL_VERSION_FILE)
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if ( OPENGL_VERSION_FILE )
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_2_2" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "2.2" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_2_1" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "2.1" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_2_0" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "2.0" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_1_5" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "1.5" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_1_4" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "1.4" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_1_3" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "1.4" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_1_2" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "1.4" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_1_1" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "1.4" )
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else()
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find_matching_item(OPENGL_VERSION_FILE "GL_VERSION_1_0" OPENGL_VERSION_LINE )
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if ( OPENGL_VERSION_LINE )
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set( OPENGL_VERSION "1.0" )
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endif()
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endif()
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endif()
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endif()
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endif()
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endif()
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endif()
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endif()
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endif()
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else()
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message( STATUS "WARNING: OpenGL found but could not open ${OPENGL_INCLUDE_DIR}/GL/gl.h" )
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endif()
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message( STATUS "USING OPENGL_VERSION = '${OPENGL_VERSION}'" )
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endif()
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