mirror of
https://github.com/reactos/CMake.git
synced 2024-12-04 01:22:28 +00:00
0d988f98e5
This command is intended for modules that issue policy warnings so they can get the warning string from CMake in a uniform manner, rather than duplicating the string. Several modules been updated to include an example of the usage of this new command.
543 lines
19 KiB
CMake
543 lines
19 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
#[=======================================================================[.rst:
|
|
FindOpenGL
|
|
----------
|
|
|
|
FindModule for OpenGL and GLU.
|
|
|
|
Optional COMPONENTS
|
|
^^^^^^^^^^^^^^^^^^^
|
|
|
|
This module respects several optional COMPONENTS: ``EGL``, ``GLX``, and
|
|
``OpenGL``. There are corresponding import targets for each of these flags.
|
|
|
|
IMPORTED Targets
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
This module defines the :prop_tgt:`IMPORTED` targets:
|
|
|
|
``OpenGL::GL``
|
|
Defined to the platform-specific OpenGL libraries if the system has OpenGL.
|
|
``OpenGL::OpenGL``
|
|
Defined to libOpenGL if the system is GLVND-based.
|
|
``OpenGL::GLU``
|
|
Defined if the system has GLU.
|
|
``OpenGL::GLX``
|
|
Defined if the system has GLX.
|
|
``OpenGL::EGL``
|
|
Defined if the system has EGL.
|
|
|
|
Result Variables
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
This module sets the following variables:
|
|
|
|
``OPENGL_FOUND``
|
|
True, if the system has OpenGL and all components are found.
|
|
``OPENGL_XMESA_FOUND``
|
|
True, if the system has XMESA.
|
|
``OPENGL_GLU_FOUND``
|
|
True, if the system has GLU.
|
|
``OpenGL_OpenGL_FOUND``
|
|
True, if the system has an OpenGL library.
|
|
``OpenGL_GLX_FOUND``
|
|
True, if the system has GLX.
|
|
``OpenGL_EGL_FOUND``
|
|
True, if the system has EGL.
|
|
``OPENGL_INCLUDE_DIR``
|
|
Path to the OpenGL include directory.
|
|
``OPENGL_EGL_INCLUDE_DIRS``
|
|
Path to the EGL include directory.
|
|
``OPENGL_LIBRARIES``
|
|
Paths to the OpenGL library, windowing system libraries, and GLU libraries.
|
|
On Linux, this assumes GLX and is never correct for EGL-based targets.
|
|
Clients are encouraged to use the ``OpenGL::*`` import targets instead.
|
|
|
|
Cache variables
|
|
^^^^^^^^^^^^^^^
|
|
|
|
The following cache variables may also be set:
|
|
|
|
``OPENGL_egl_LIBRARY``
|
|
Path to the EGL library.
|
|
``OPENGL_glu_LIBRARY``
|
|
Path to the GLU library.
|
|
``OPENGL_glx_LIBRARY``
|
|
Path to the GLVND 'GLX' library.
|
|
``OPENGL_opengl_LIBRARY``
|
|
Path to the GLVND 'OpenGL' library
|
|
``OPENGL_gl_LIBRARY``
|
|
Path to the OpenGL library. New code should prefer the ``OpenGL::*`` import
|
|
targets.
|
|
|
|
Linux-specific
|
|
^^^^^^^^^^^^^^
|
|
|
|
Some Linux systems utilize GLVND as a new ABI for OpenGL. GLVND separates
|
|
context libraries from OpenGL itself; OpenGL lives in "libOpenGL", and
|
|
contexts are defined in "libGLX" or "libEGL". GLVND is currently the only way
|
|
to get OpenGL 3+ functionality via EGL in a manner portable across vendors.
|
|
Projects may use GLVND explicitly with target ``OpenGL::OpenGL`` and either
|
|
``OpenGL::GLX`` or ``OpenGL::EGL``.
|
|
|
|
Projects may use the ``OpenGL::GL`` target (or ``OPENGL_LIBRARIES`` variable)
|
|
to use legacy GL interfaces. These will use the legacy GL library located
|
|
by ``OPENGL_gl_LIBRARY``, if available. If ``OPENGL_gl_LIBRARY`` is empty or
|
|
not found and GLVND is available, the ``OpenGL::GL`` target will use GLVND
|
|
``OpenGL::OpenGL`` and ``OpenGL::GLX`` (and the ``OPENGL_LIBRARIES``
|
|
variable will use the corresponding libraries). Thus, for non-EGL-based
|
|
Linux targets, the ``OpenGL::GL`` target is most portable.
|
|
|
|
A ``OpenGL_GL_PREFERENCE`` variable may be set to specify the preferred way
|
|
to provide legacy GL interfaces in case multiple choices are available.
|
|
The value may be one of:
|
|
|
|
``GLVND``
|
|
If the GLVND OpenGL and GLX libraries are available, prefer them.
|
|
This forces ``OPENGL_gl_LIBRARY`` to be empty.
|
|
This is the default if components were requested (since components
|
|
correspond to GLVND libraries) or if policy :policy:`CMP0072` is
|
|
set to ``NEW``.
|
|
|
|
``LEGACY``
|
|
Prefer to use the legacy libGL library, if available.
|
|
This is the default if no components were requested and
|
|
policy :policy:`CMP0072` is not set to ``NEW``.
|
|
|
|
For EGL targets the client must rely on GLVND support on the user's system.
|
|
Linking should use the ``OpenGL::OpenGL OpenGL::EGL`` targets. Using GLES*
|
|
libraries is theoretically possible in place of ``OpenGL::OpenGL``, but this
|
|
module does not currently support that; contributions welcome.
|
|
|
|
``OPENGL_egl_LIBRARY`` and ``OPENGL_EGL_INCLUDE_DIRS`` are defined in the case of
|
|
GLVND. For non-GLVND Linux and other systems these are left undefined.
|
|
|
|
macOS-Specific
|
|
^^^^^^^^^^^^^^
|
|
|
|
On OSX FindOpenGL defaults to using the framework version of OpenGL. People
|
|
will have to change the cache values of OPENGL_glu_LIBRARY and
|
|
OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX.
|
|
#]=======================================================================]
|
|
|
|
set(_OpenGL_REQUIRED_VARS OPENGL_gl_LIBRARY)
|
|
|
|
# Provide OPENGL_USE_<C> variables for each component.
|
|
foreach(component ${OpenGL_FIND_COMPONENTS})
|
|
string(TOUPPER ${component} _COMPONENT)
|
|
set(OPENGL_USE_${_COMPONENT} 1)
|
|
endforeach()
|
|
|
|
if (CYGWIN)
|
|
find_path(OPENGL_INCLUDE_DIR GL/gl.h )
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
|
|
|
|
find_library(OPENGL_gl_LIBRARY opengl32 )
|
|
find_library(OPENGL_glu_LIBRARY glu32 )
|
|
|
|
elseif (WIN32)
|
|
|
|
if(BORLAND)
|
|
set (OPENGL_gl_LIBRARY import32 CACHE STRING "OpenGL library for win32")
|
|
set (OPENGL_glu_LIBRARY import32 CACHE STRING "GLU library for win32")
|
|
else()
|
|
set (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32")
|
|
set (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32")
|
|
endif()
|
|
|
|
elseif (APPLE)
|
|
# The OpenGL.framework provides both gl and glu
|
|
find_library(OPENGL_gl_LIBRARY OpenGL DOC "OpenGL library for OS X")
|
|
find_library(OPENGL_glu_LIBRARY OpenGL DOC
|
|
"GLU library for OS X (usually same as OpenGL library)")
|
|
find_path(OPENGL_INCLUDE_DIR OpenGL/gl.h DOC "Include for OpenGL on OS X")
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
|
|
|
|
else()
|
|
if (CMAKE_SYSTEM_NAME MATCHES "HP-UX")
|
|
# Handle HP-UX cases where we only want to find OpenGL in either hpux64
|
|
# or hpux32 depending on if we're doing a 64 bit build.
|
|
if(CMAKE_SIZEOF_VOID_P EQUAL 4)
|
|
set(_OPENGL_LIB_PATH
|
|
/opt/graphics/OpenGL/lib/hpux32/)
|
|
else()
|
|
set(_OPENGL_LIB_PATH
|
|
/opt/graphics/OpenGL/lib/hpux64/
|
|
/opt/graphics/OpenGL/lib/pa20_64)
|
|
endif()
|
|
elseif(CMAKE_SYSTEM_NAME STREQUAL Haiku)
|
|
set(_OPENGL_LIB_PATH
|
|
/boot/develop/lib/x86)
|
|
set(_OPENGL_INCLUDE_PATH
|
|
/boot/develop/headers/os/opengl)
|
|
endif()
|
|
|
|
# The first line below is to make sure that the proper headers
|
|
# are used on a Linux machine with the NVidia drivers installed.
|
|
# They replace Mesa with NVidia's own library but normally do not
|
|
# install headers and that causes the linking to
|
|
# fail since the compiler finds the Mesa headers but NVidia's library.
|
|
# Make sure the NVIDIA directory comes BEFORE the others.
|
|
# - Atanas Georgiev <atanas@cs.columbia.edu>
|
|
find_path(OPENGL_INCLUDE_DIR GL/gl.h
|
|
/usr/share/doc/NVIDIA_GLX-1.0/include
|
|
/usr/openwin/share/include
|
|
/opt/graphics/OpenGL/include
|
|
${_OPENGL_INCLUDE_PATH}
|
|
)
|
|
find_path(OPENGL_GLX_INCLUDE_DIR GL/glx.h ${_OPENGL_INCLUDE_PATH})
|
|
find_path(OPENGL_EGL_INCLUDE_DIR EGL/egl.h ${_OPENGL_INCLUDE_PATH})
|
|
find_path(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h
|
|
/usr/share/doc/NVIDIA_GLX-1.0/include
|
|
/usr/openwin/share/include
|
|
/opt/graphics/OpenGL/include
|
|
)
|
|
|
|
# Search for the GLVND libraries. We do this regardless of COMPONENTS; we'll
|
|
# take into account the COMPONENTS logic later.
|
|
find_library(OPENGL_opengl_LIBRARY
|
|
NAMES OpenGL
|
|
PATHS ${_OPENGL_LIB_PATH}
|
|
)
|
|
|
|
find_library(OPENGL_glx_LIBRARY
|
|
NAMES GLX
|
|
PATHS ${_OPENGL_LIB_PATH}
|
|
)
|
|
|
|
find_library(OPENGL_egl_LIBRARY
|
|
NAMES EGL
|
|
PATHS ${_OPENGL_LIB_PATH}
|
|
)
|
|
|
|
find_library(OPENGL_glu_LIBRARY
|
|
NAMES GLU MesaGLU
|
|
PATHS ${OPENGL_gl_LIBRARY}
|
|
/opt/graphics/OpenGL/lib
|
|
/usr/openwin/lib
|
|
/usr/shlib
|
|
)
|
|
|
|
set(_OpenGL_GL_POLICY_WARN 0)
|
|
if(NOT DEFINED OpenGL_GL_PREFERENCE)
|
|
set(OpenGL_GL_PREFERENCE "")
|
|
endif()
|
|
if(NOT OpenGL_GL_PREFERENCE STREQUAL "")
|
|
# A preference has been explicitly specified.
|
|
if(NOT OpenGL_GL_PREFERENCE MATCHES "^(GLVND|LEGACY)$")
|
|
message(FATAL_ERROR
|
|
"OpenGL_GL_PREFERENCE value '${OpenGL_GL_PREFERENCE}' not recognized. "
|
|
"Allowed values are 'GLVND' and 'LEGACY'."
|
|
)
|
|
endif()
|
|
elseif(OpenGL_FIND_COMPONENTS)
|
|
# No preference was explicitly specified, but the caller did request
|
|
# at least one GLVND component. Prefer GLVND for legacy GL.
|
|
set(OpenGL_GL_PREFERENCE "GLVND")
|
|
else()
|
|
# No preference was explicitly specified and no GLVND components were
|
|
# requested. Use a policy to choose the default.
|
|
cmake_policy(GET CMP0072 _OpenGL_GL_POLICY)
|
|
if("x${_OpenGL_GL_POLICY}x" STREQUAL "xNEWx")
|
|
set(OpenGL_GL_PREFERENCE "GLVND")
|
|
else()
|
|
set(OpenGL_GL_PREFERENCE "LEGACY")
|
|
if("x${_OpenGL_GL_POLICY}x" STREQUAL "xx")
|
|
set(_OpenGL_GL_POLICY_WARN 1)
|
|
endif()
|
|
endif()
|
|
unset(_OpenGL_GL_POLICY)
|
|
endif()
|
|
|
|
if("x${OpenGL_GL_PREFERENCE}x" STREQUAL "xGLVNDx" AND OPENGL_opengl_LIBRARY AND OPENGL_glx_LIBRARY)
|
|
# We can provide legacy GL using GLVND libraries.
|
|
# Do not use any legacy GL library.
|
|
set(OPENGL_gl_LIBRARY "")
|
|
else()
|
|
# We cannot provide legacy GL using GLVND libraries.
|
|
# Search for the legacy GL library.
|
|
find_library(OPENGL_gl_LIBRARY
|
|
NAMES GL MesaGL
|
|
PATHS /opt/graphics/OpenGL/lib
|
|
/usr/openwin/lib
|
|
/usr/shlib
|
|
${_OPENGL_LIB_PATH}
|
|
)
|
|
endif()
|
|
|
|
if(_OpenGL_GL_POLICY_WARN AND OPENGL_gl_LIBRARY AND OPENGL_opengl_LIBRARY AND OPENGL_glx_LIBRARY)
|
|
cmake_policy(GET_WARNING CMP0072 _cmp0072_warning)
|
|
message(AUTHOR_WARNING
|
|
"${_cmp0072_warning}\n"
|
|
"FindOpenGL found both a legacy GL library:\n"
|
|
" OPENGL_gl_LIBRARY: ${OPENGL_gl_LIBRARY}\n"
|
|
"and GLVND libraries for OpenGL and GLX:\n"
|
|
" OPENGL_opengl_LIBRARY: ${OPENGL_opengl_LIBRARY}\n"
|
|
" OPENGL_glx_LIBRARY: ${OPENGL_glx_LIBRARY}\n"
|
|
"OpenGL_GL_PREFERENCE has not been set to \"GLVND\" or \"LEGACY\", so for "
|
|
"compatibility with CMake 3.10 and below the legacy GL library will be used."
|
|
)
|
|
endif()
|
|
unset(_OpenGL_GL_POLICY_WARN)
|
|
|
|
# FPHSA cannot handle "this OR that is required", so we conditionally set what
|
|
# it must look for. First clear any previous config we might have done:
|
|
set(_OpenGL_REQUIRED_VARS)
|
|
|
|
# now we append the libraries as appropriate. The complicated logic
|
|
# basically comes down to "use libOpenGL when we can, and add in specific
|
|
# context mechanisms when requested, or we need them to preserve the previous
|
|
# default where glx is always available."
|
|
if((NOT OPENGL_USE_EGL AND
|
|
NOT OPENGL_opengl_LIBRARY AND
|
|
OPENGL_glx_LIBRARY AND
|
|
NOT OPENGL_gl_LIBRARY) OR
|
|
(NOT OPENGL_USE_EGL AND
|
|
NOT OPENGL_glx_LIBRARY AND
|
|
NOT OPENGL_gl_LIBRARY) OR
|
|
(NOT OPENGL_USE_EGL AND
|
|
OPENGL_opengl_LIBRARY AND
|
|
OPENGL_glx_LIBRARY) OR
|
|
( OPENGL_USE_EGL))
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_opengl_LIBRARY)
|
|
endif()
|
|
|
|
# GLVND GLX library. Preferred when available.
|
|
if((NOT OPENGL_USE_OPENGL AND
|
|
NOT OPENGL_USE_GLX AND
|
|
NOT OPENGL_USE_EGL AND
|
|
NOT OPENGL_glx_LIBRARY AND
|
|
NOT OPENGL_gl_LIBRARY) OR
|
|
( OPENGL_USE_GLX AND
|
|
NOT OPENGL_USE_EGL AND
|
|
NOT OPENGL_glx_LIBRARY AND
|
|
NOT OPENGL_gl_LIBRARY) OR
|
|
(NOT OPENGL_USE_EGL AND
|
|
OPENGL_opengl_LIBRARY AND
|
|
OPENGL_glx_LIBRARY) OR
|
|
(OPENGL_USE_GLX AND OPENGL_USE_EGL))
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_glx_LIBRARY)
|
|
endif()
|
|
|
|
# GLVND EGL library.
|
|
if(OPENGL_USE_EGL)
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_egl_LIBRARY)
|
|
endif()
|
|
|
|
# Old-style "libGL" library: used as a fallback when GLVND isn't available.
|
|
if((NOT OPENGL_USE_EGL AND
|
|
NOT OPENGL_opengl_LIBRARY AND
|
|
OPENGL_glx_LIBRARY AND
|
|
OPENGL_gl_LIBRARY) OR
|
|
(NOT OPENGL_USE_EGL AND
|
|
NOT OPENGL_glx_LIBRARY AND
|
|
OPENGL_gl_LIBRARY))
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_gl_LIBRARY)
|
|
endif()
|
|
|
|
# We always need the 'gl.h' include dir.
|
|
list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
|
|
|
|
unset(_OPENGL_INCLUDE_PATH)
|
|
unset(_OPENGL_LIB_PATH)
|
|
|
|
find_library(OPENGL_glu_LIBRARY
|
|
NAMES GLU MesaGLU
|
|
PATHS ${OPENGL_gl_LIBRARY}
|
|
/opt/graphics/OpenGL/lib
|
|
/usr/openwin/lib
|
|
/usr/shlib
|
|
)
|
|
endif ()
|
|
|
|
if(OPENGL_xmesa_INCLUDE_DIR)
|
|
set( OPENGL_XMESA_FOUND "YES" )
|
|
else()
|
|
set( OPENGL_XMESA_FOUND "NO" )
|
|
endif()
|
|
|
|
if(OPENGL_glu_LIBRARY)
|
|
set( OPENGL_GLU_FOUND "YES" )
|
|
else()
|
|
set( OPENGL_GLU_FOUND "NO" )
|
|
endif()
|
|
|
|
# OpenGL_OpenGL_FOUND is a bit unique in that it is okay if /either/ libOpenGL
|
|
# or libGL is found.
|
|
# Using libGL with libEGL is never okay, though; we handle that case later.
|
|
if(NOT OPENGL_opengl_LIBRARY AND NOT OPENGL_gl_LIBRARY)
|
|
set(OpenGL_OpenGL_FOUND FALSE)
|
|
else()
|
|
set(OpenGL_OpenGL_FOUND TRUE)
|
|
endif()
|
|
|
|
if(OPENGL_glx_LIBRARY AND OPENGL_GLX_INCLUDE_DIR)
|
|
set(OpenGL_GLX_FOUND TRUE)
|
|
else()
|
|
set(OpenGL_GLX_FOUND FALSE)
|
|
endif()
|
|
|
|
if(OPENGL_egl_LIBRARY AND OPENGL_EGL_INCLUDE_DIR)
|
|
set(OpenGL_EGL_FOUND TRUE)
|
|
else()
|
|
set(OpenGL_EGL_FOUND FALSE)
|
|
endif()
|
|
|
|
# User-visible names should be plural.
|
|
if(OPENGL_EGL_INCLUDE_DIR)
|
|
set(OPENGL_EGL_INCLUDE_DIRS ${OPENGL_EGL_INCLUDE_DIR})
|
|
endif()
|
|
|
|
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
|
|
FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenGL REQUIRED_VARS ${_OpenGL_REQUIRED_VARS}
|
|
HANDLE_COMPONENTS)
|
|
unset(_OpenGL_REQUIRED_VARS)
|
|
|
|
# OpenGL:: targets
|
|
if(OPENGL_FOUND)
|
|
# ::OpenGL is a GLVND library, and thus Linux-only: we don't bother checking
|
|
# for a framework version of this library.
|
|
if(OPENGL_opengl_LIBRARY AND NOT TARGET OpenGL::OpenGL)
|
|
if(IS_ABSOLUTE "${OPENGL_opengl_LIBRARY}")
|
|
add_library(OpenGL::OpenGL UNKNOWN IMPORTED)
|
|
set_target_properties(OpenGL::OpenGL PROPERTIES IMPORTED_LOCATION
|
|
"${OPENGL_opengl_LIBRARY}")
|
|
else()
|
|
add_library(OpenGL::OpenGL INTERFACE IMPORTED)
|
|
set_target_properties(OpenGL::OpenGL PROPERTIES IMPORTED_LIBNAME
|
|
"${OPENGL_opengl_LIBRARY}")
|
|
endif()
|
|
set_target_properties(OpenGL::OpenGL PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
|
|
"${OPENGL_INCLUDE_DIR}")
|
|
endif()
|
|
|
|
# ::GLX is a GLVND library, and thus Linux-only: we don't bother checking
|
|
# for a framework version of this library.
|
|
if(OpenGL_GLX_FOUND AND NOT TARGET OpenGL::GLX)
|
|
if(IS_ABSOLUTE "${OPENGL_glx_LIBRARY}")
|
|
add_library(OpenGL::GLX UNKNOWN IMPORTED)
|
|
set_target_properties(OpenGL::GLX PROPERTIES IMPORTED_LOCATION
|
|
"${OPENGL_glx_LIBRARY}")
|
|
else()
|
|
add_library(OpenGL::GLX INTERFACE IMPORTED)
|
|
set_target_properties(OpenGL::GLX PROPERTIES IMPORTED_LIBNAME
|
|
"${OPENGL_glx_LIBRARY}")
|
|
endif()
|
|
set_target_properties(OpenGL::GLX PROPERTIES INTERFACE_LINK_LIBRARIES
|
|
OpenGL::OpenGL)
|
|
set_target_properties(OpenGL::GLX PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
|
|
"${OPENGL_GLX_INCLUDE_DIR}")
|
|
endif()
|
|
|
|
if(OPENGL_gl_LIBRARY AND NOT TARGET OpenGL::GL)
|
|
# A legacy GL library is available, so use it for the legacy GL target.
|
|
if(IS_ABSOLUTE "${OPENGL_gl_LIBRARY}")
|
|
add_library(OpenGL::GL UNKNOWN IMPORTED)
|
|
if(OPENGL_gl_LIBRARY MATCHES "/([^/]+)\\.framework$")
|
|
set(_gl_fw "${OPENGL_gl_LIBRARY}/${CMAKE_MATCH_1}")
|
|
if(EXISTS "${_gl_fw}.tbd")
|
|
string(APPEND _gl_fw ".tbd")
|
|
endif()
|
|
set_target_properties(OpenGL::GL PROPERTIES
|
|
IMPORTED_LOCATION "${_gl_fw}")
|
|
else()
|
|
set_target_properties(OpenGL::GL PROPERTIES
|
|
IMPORTED_LOCATION "${OPENGL_gl_LIBRARY}")
|
|
endif()
|
|
else()
|
|
add_library(OpenGL::GL INTERFACE IMPORTED)
|
|
set_target_properties(OpenGL::GL PROPERTIES
|
|
IMPORTED_LIBNAME "${OPENGL_gl_LIBRARY}")
|
|
endif()
|
|
set_target_properties(OpenGL::GL PROPERTIES
|
|
INTERFACE_INCLUDE_DIRECTORIES "${OPENGL_INCLUDE_DIR}")
|
|
elseif(NOT TARGET OpenGL::GL AND TARGET OpenGL::OpenGL AND TARGET OpenGL::GLX)
|
|
# A legacy GL library is not available, but we can provide the legacy GL
|
|
# target using GLVND OpenGL+GLX.
|
|
add_library(OpenGL::GL INTERFACE IMPORTED)
|
|
set_target_properties(OpenGL::GL PROPERTIES INTERFACE_LINK_LIBRARIES
|
|
OpenGL::OpenGL)
|
|
set_property(TARGET OpenGL::GL APPEND PROPERTY INTERFACE_LINK_LIBRARIES
|
|
OpenGL::GLX)
|
|
set_target_properties(OpenGL::GL PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
|
|
"${OPENGL_INCLUDE_DIR}")
|
|
endif()
|
|
|
|
# ::EGL is a GLVND library, and thus Linux-only: we don't bother checking
|
|
# for a framework version of this library.
|
|
# Note we test for OpenGL::OpenGL as a target. When this module is updated to
|
|
# support GLES, we would additionally want to check for the hypothetical GLES
|
|
# target and enable EGL if either ::GLES or ::OpenGL is created.
|
|
if(TARGET OpenGL::OpenGL AND OpenGL_EGL_FOUND AND NOT TARGET OpenGL::EGL)
|
|
if(IS_ABSOLUTE "${OPENGL_egl_LIBRARY}")
|
|
add_library(OpenGL::EGL UNKNOWN IMPORTED)
|
|
set_target_properties(OpenGL::EGL PROPERTIES IMPORTED_LOCATION
|
|
"${OPENGL_egl_LIBRARY}")
|
|
else()
|
|
add_library(OpenGL::EGL INTERFACE IMPORTED)
|
|
set_target_properties(OpenGL::EGL PROPERTIES IMPORTED_LIBNAME
|
|
"${OPENGL_egl_LIBRARY}")
|
|
endif()
|
|
set_target_properties(OpenGL::EGL PROPERTIES INTERFACE_LINK_LIBRARIES
|
|
OpenGL::OpenGL)
|
|
# Note that EGL's include directory is different from OpenGL/GLX's!
|
|
set_target_properties(OpenGL::EGL PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
|
|
"${OPENGL_EGL_INCLUDE_DIR}")
|
|
endif()
|
|
|
|
if(OPENGL_GLU_FOUND AND NOT TARGET OpenGL::GLU)
|
|
if(IS_ABSOLUTE "${OPENGL_glu_LIBRARY}")
|
|
add_library(OpenGL::GLU UNKNOWN IMPORTED)
|
|
if(OPENGL_glu_LIBRARY MATCHES "/([^/]+)\\.framework$")
|
|
set(_glu_fw "${OPENGL_glu_LIBRARY}/${CMAKE_MATCH_1}")
|
|
if(EXISTS "${_glu_fw}.tbd")
|
|
string(APPEND _glu_fw ".tbd")
|
|
endif()
|
|
set_target_properties(OpenGL::GLU PROPERTIES
|
|
IMPORTED_LOCATION "${_glu_fw}")
|
|
else()
|
|
set_target_properties(OpenGL::GLU PROPERTIES
|
|
IMPORTED_LOCATION "${OPENGL_glu_LIBRARY}")
|
|
endif()
|
|
else()
|
|
add_library(OpenGL::GLU INTERFACE IMPORTED)
|
|
set_target_properties(OpenGL::GLU PROPERTIES
|
|
IMPORTED_LIBNAME "${OPENGL_glu_LIBRARY}")
|
|
endif()
|
|
set_target_properties(OpenGL::GLU PROPERTIES
|
|
INTERFACE_LINK_LIBRARIES OpenGL::GL)
|
|
endif()
|
|
|
|
# OPENGL_LIBRARIES mirrors OpenGL::GL's logic ...
|
|
if(OPENGL_gl_LIBRARY)
|
|
set(OPENGL_LIBRARIES ${OPENGL_gl_LIBRARY})
|
|
elseif(TARGET OpenGL::OpenGL AND TARGET OpenGL::GLX)
|
|
set(OPENGL_LIBRARIES ${OPENGL_opengl_LIBRARY} ${OPENGL_glx_LIBRARY})
|
|
else()
|
|
set(OPENGL_LIBRARIES "")
|
|
endif()
|
|
# ... and also includes GLU, if available.
|
|
if(TARGET OpenGL::GLU)
|
|
list(APPEND OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY})
|
|
endif()
|
|
endif()
|
|
|
|
# This deprecated setting is for backward compatibility with CMake1.4
|
|
set(OPENGL_LIBRARY ${OPENGL_LIBRARIES})
|
|
# This deprecated setting is for backward compatibility with CMake1.4
|
|
set(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})
|
|
|
|
mark_as_advanced(
|
|
OPENGL_INCLUDE_DIR
|
|
OPENGL_xmesa_INCLUDE_DIR
|
|
OPENGL_egl_LIBRARY
|
|
OPENGL_glu_LIBRARY
|
|
OPENGL_glx_LIBRARY
|
|
OPENGL_gl_LIBRARY
|
|
OPENGL_opengl_LIBRARY
|
|
OPENGL_EGL_INCLUDE_DIR
|
|
OPENGL_GLX_INCLUDE_DIR
|
|
)
|