100 lines
2.6 KiB
CMake
100 lines
2.6 KiB
CMake
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#[=======================================================================[.rst:
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FindV4L2
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----------
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Find V4L2 headers and libv4l2
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This module accepts optional COMPONENTS:
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videodev2 (default)
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libv4l2
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IMPORTED Targets
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^^^^^^^^^^^^^^^^
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This module defines the following :prop_tgt:`IMPORTED` targets::
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``V4L2::videodev2``
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The Video for Linux Two header file, if found.
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``V4L2::libv4l2``
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A thin abstraction layer on top of video4linux2 devices, if found.
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Result Variables
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^^^^^^^^^^^^^^^^
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``V4L2_FOUND``
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System has v4l2 support. If no components are specified only the videodev2.h header has to be found.
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``V4L2_INCLUDE_DIRS``
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The v4l2 include directories.
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``V4L2_LIBRARIES``
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The libraries needed to have v4l2 support according to the specified components.
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#]=======================================================================]
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find_path(V4L2_VIDEODEV2_INCLUDE_DIR
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NAMES linux/videodev2.h)
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mark_as_advanced(V4L2_VIDEODEV2_INCLUDE_DIR)
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if(EXISTS "${V4L2_VIDEODEV2_INCLUDE_DIR}")
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set(V4L2_videodev2_FOUND TRUE)
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else()
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set(V4L2_videodev2_FOUND FALSE)
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endif()
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pkg_check_modules(PC_V4L2_LIBV4L2 QUIET libv4l2)
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find_path(V4L2_LIBV4L2_INCLUDE_DIR
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NAMES libv4l2.h
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HINTS
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${PC_V4L2_LIBV4L2_INCLUDEDIR}
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${PC_V4L2_LIBV4L2_INCLUDE_DIRS})
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mark_as_advanced(V4L2_LIBV4L2_INCLUDE_DIR)
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find_library(V4L2_LIBV4L2_LIBRARY
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NAMES ${PC_V4L2_LIBV4L2_LIBRARIES}
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HINTS
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${PC_V4L2_LIBV4L2_LIBDIR}
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${PC_V4L2_LIBV4L2_LIBRARY_DIR})
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mark_as_advanced(V4L2_LIBV4L2_LIBRARY)
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if(EXISTS "${V4L2_LIBV4L2_INCLUDE_DIR}" AND
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EXISTS "${V4L2_LIBV4L2_LIBRARY}")
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set(V4L2_libv4l2_FOUND TRUE)
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else()
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set(V4L2_libv4l2_FOUND FALSE)
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(V4L2
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REQUIRED_VARS
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V4L2_VIDEODEV2_INCLUDE_DIR
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HANDLE_COMPONENTS)
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set(V4L2_INCLUDE_DIRS)
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set(V4L2_LIBRARIES)
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if(V4L2_videodev2_FOUND)
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set(V4L2_VIDEODEV2_INCLUDE_DIRS ${V4L2_VIDEODEV2_INCLUDE_DIR})
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list(APPEND V4L2_INCLUDE2_DIRS
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"${V4L2_VIDEODEV2_INCLUDE_DIRS}")
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add_library(V4L2::videodev2 INTERFACE IMPORTED)
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set_target_properties(V4L2::videodev2 PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${V4L2_VIDEODEV2_INCLUDE_DIRS}")
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endif()
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if(V4L2_libv4l2_FOUND)
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set(V4L2_LIBV4L2_INCLUDE_DIRS ${V4L2_LIBV4L2_INCLUDE_DIR})
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set(V4L2_LIBV4L2_LIBRARIES ${V4L2_LIBV4L2_LIBRARY})
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list(APPEND V4L2_INCLUDE_DIRS
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"${V4L2_LIBV4L2_INCLUDE_DIRS}")
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list(APPEND V4L2_LIBRARIES
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"${V4L2_LIBV4L2_LIBRARIES}")
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add_library(V4L2::libv4l2 UNKNOWN IMPORTED)
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set_target_properties(V4L2::libv4l2 PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${V4L2_LIBV4L2_INCLUDE_DIRS}"
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IMPORTED_LOCATION "${V4L2_LIBV4L2_LIBRARY}")
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endif()
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