d051cbda5d
In commit 079e8469ab (... OpenGL always needs X11 on Unix, 2002-09-05) the FindOpenGL module was taught to search for X11 as a dependency of the OpenGL library. This was done without a detailed explanation, and the dependency should not be explicitly needed because OpenGL headers should not expose applications to X11 APIs directly. Unfortunately the only way to know if anything legitimately depends on this behavior (perhaps in static library cases) is to simply remove it and wait for issues to be reported. If so, then we can add some kind of compatibility setting for this later. Add a release note to draw attention to this change. Reported-by: Dainius "GreatEmerald" Masiliūnas <pastas4@gmail.com>
217 lines
6.4 KiB
CMake
217 lines
6.4 KiB
CMake
#.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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# IMPORTED Targets
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# ^^^^^^^^^^^^^^^^
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#
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# This module defines the :prop_tgt:`IMPORTED` targets:
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#
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# ``OpenGL::GL``
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# Defined if the system has OpenGL.
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# ``OpenGL::GLU``
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# Defined if the system has 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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find_library(OPENGL_gl_LIBRARY OpenGL DOC "OpenGL lib for OSX")
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find_library(OPENGL_glu_LIBRARY AGL DOC "AGL lib for OSX")
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find_path(OPENGL_INCLUDE_DIR OpenGL/gl.h DOC "Include for OpenGL on OSX")
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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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set( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_LIBRARIES} )
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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 ${_OpenGL_REQUIRED_VARS})
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unset(_OpenGL_REQUIRED_VARS)
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# OpenGL:: targets
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if(OPENGL_FOUND)
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if(NOT TARGET OpenGL::GL)
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add_library(OpenGL::GL UNKNOWN IMPORTED)
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set_target_properties(OpenGL::GL PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${OPENGL_INCLUDE_DIR}")
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if(OPENGL_gl_LIBRARY MATCHES "/([^/]+)\\.framework$")
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set_target_properties(OpenGL::GL PROPERTIES
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IMPORTED_LOCATION "${OPENGL_gl_LIBRARY}/${CMAKE_MATCH_1}")
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else()
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set_target_properties(OpenGL::GL PROPERTIES
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IMPORTED_LOCATION "${OPENGL_gl_LIBRARY}")
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endif()
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endif()
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if(OPENGL_GLU_FOUND AND NOT TARGET OpenGL::GLU)
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add_library(OpenGL::GLU UNKNOWN IMPORTED)
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set_target_properties(OpenGL::GLU PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${OPENGL_INCLUDE_DIR}"
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INTERFACE_LINK_LIBRARIES OpenGL::GL)
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if(OPENGL_glu_LIBRARY MATCHES "/([^/]+)\\.framework$")
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set_target_properties(OpenGL::GLU PROPERTIES
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IMPORTED_LOCATION "${OPENGL_glu_LIBRARY}/${CMAKE_MATCH_1}")
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else()
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set_target_properties(OpenGL::GLU PROPERTIES
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IMPORTED_LOCATION "${OPENGL_glu_LIBRARY}")
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endif()
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endif()
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endif()
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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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