c759551340
Introduces a new (optional) dependency: libdrm. The DrmBackend currently supports finding the first connected output. It can create shared memory buffers which are used by SceneQPainter to do double buffered rendering. There is still lots to do, the following things are not yet working: * multiple outputs * page flip * OpenGL (through gbm) * restoring mode setting to start value
126 lines
4.6 KiB
CMake
126 lines
4.6 KiB
CMake
#.rst:
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# FindLibdrm
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# -------
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#
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# Try to find libdrm on a Unix system.
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#
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# This will define the following variables:
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#
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# ``Libdrm_FOUND``
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# True if (the requested version of) libdrm is available
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# ``Libdrm_VERSION``
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# The version of libdrm
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# ``Libdrm_LIBRARIES``
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# This can be passed to target_link_libraries() instead of the ``Libdrm::Libdrm``
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# target
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# ``Libdrm_INCLUDE_DIRS``
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# This should be passed to target_include_directories() if the target is not
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# used for linking
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# ``Libdrm_DEFINITIONS``
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# This should be passed to target_compile_options() if the target is not
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# used for linking
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#
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# If ``Libdrm_FOUND`` is TRUE, it will also define the following imported target:
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#
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# ``Libdrm::Libdrm``
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# The libdrm library
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#
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# In general we recommend using the imported target, as it is easier to use.
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# Bear in mind, however, that if the target is in the link interface of an
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# exported library, it must be made available by the package config file.
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#=============================================================================
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# Copyright 2014 Alex Merry <alex.merry@kde.org>
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# Copyright 2014 Martin Gräßlin <mgraesslin@kde.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#=============================================================================
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if(CMAKE_VERSION VERSION_LESS 2.8.12)
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message(FATAL_ERROR "CMake 2.8.12 is required by FindLibdrm.cmake")
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endif()
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if(CMAKE_MINIMUM_REQUIRED_VERSION VERSION_LESS 2.8.12)
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message(AUTHOR_WARNING "Your project should require at least CMake 2.8.12 to use FindLibdrm.cmake")
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endif()
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if(NOT WIN32)
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# Use pkg-config to get the directories and then use these values
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# in the FIND_PATH() and FIND_LIBRARY() calls
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find_package(PkgConfig)
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pkg_check_modules(PKG_Libdrm QUIET libdrm)
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set(Libdrm_DEFINITIONS ${PKG_Libdrm_CFLAGS_OTHER})
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set(Libdrm_VERSION ${PKG_Libdrm_VERSION})
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find_path(Libdrm_INCLUDE_DIR
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NAMES
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xf86drm.h
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HINTS
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${PKG_Libdrm_INCLUDE_DIRS}
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)
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find_library(Libdrm_LIBRARY
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NAMES
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drm
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HINTS
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${PKG_Libdrm_LIBRARY_DIRS}
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)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Libdrm
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FOUND_VAR
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Libdrm_FOUND
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REQUIRED_VARS
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Libdrm_LIBRARY
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Libdrm_INCLUDE_DIR
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VERSION_VAR
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Libdrm_VERSION
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)
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if(Libdrm_FOUND AND NOT TARGET Libdrm::Libdrm)
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add_library(Libdrm::Libdrm UNKNOWN IMPORTED)
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set_target_properties(Libdrm::Libdrm PROPERTIES
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IMPORTED_LOCATION "${Libdrm_LIBRARY}"
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INTERFACE_COMPILE_OPTIONS "${Libdrm_DEFINITIONS}"
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INTERFACE_INCLUDE_DIRECTORIES "${Libdrm_INCLUDE_DIR}"
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INTERFACE_INCLUDE_DIRECTORIES "${Libdrm_INCLUDE_DIR}/libdrm"
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)
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endif()
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mark_as_advanced(Libdrm_LIBRARY Libdrm_INCLUDE_DIR)
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# compatibility variables
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set(Libdrm_LIBRARIES ${Libdrm_LIBRARY})
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set(Libdrm_INCLUDE_DIRS ${Libdrm_INCLUDE_DIR})
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set(Libdrm_VERSION_STRING ${Libdrm_VERSION})
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else()
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message(STATUS "FindLibdrm.cmake cannot find libdrm on Windows systems.")
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set(Libdrm_FOUND FALSE)
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endif()
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include(FeatureSummary)
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set_package_properties(Libdrm PROPERTIES
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URL "https://wiki.freedesktop.org/dri/"
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DESCRIPTION "Userspace interface to kernel DRM services."
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)
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