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86578eccf2
Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
171 lines
4.9 KiB
CMake
171 lines
4.9 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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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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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 ${OPENGL_INCLUDE_DIR})
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# handle the QUIETLY and REQUIRED arguments and set OPENGL_FOUND to TRUE if
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# all listed variables are TRUE
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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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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)
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