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add recipes to detect libv4l2

This commit is contained in:
Isaac Connor 2016-09-28 09:14:44 -04:00
parent 994f1d566e
commit d67cb0d0df
1 changed files with 67 additions and 0 deletions
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cmake/Modules/FindV4L2.cmake Normal file
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# - Find V4L2 library
# Find the native V4L2 includes and library
# This module defines
# V4L2_INCLUDE_DIR, where to find libv4l2.h, etc.
# V4L2_LIBRARIES, libraries to link against to use V4L2.
# V4L2_FOUND, If false, do not try to use V4L2. also defined, but not for general use are
# V4L2_LIBRARY, where to find the V4L2 library.
#
#=============================================================================
# Copyright 2012 Juergen Heinemann (Undefined) http://www.hjcms.de
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#
#=============================================================================
SET (V4L2_FOUND 0)
FIND_PATH (V4L2_INCLUDE_DIR
NAMES libv4l2.h
PATH_SUFFIXES v4l2 video4linux
DOC "The Video4Linux Version 2 (v4l2) include directory"
)
FIND_PATH (V4L2_CONVERT_INCLUDE_DIR
NAMES libv4lconvert.h
PATH_SUFFIXES v4l2 v4lconvert
DOC "The v4l format conversion (v4lconvert) include directory"
)
FIND_PATH (_videodev2
NAMES videodev2.h
PATH_SUFFIXES linux
DOC "Video for Linux Two header file include directory"
)
FIND_LIBRARY (V4L2_LIBRARY
NAMES v4l2
DOC "The Video4Linux Version 2 (v4l2) library"
)
FIND_LIBRARY (V4L2_CONVERT_LIBRARY
NAMES v4lconvert
DOC "The v4l format conversion (v4lconvert) library"
)
# handle the QUIETLY and REQUIRED arguments and set V4L2_FOUND to TRUE if all listed variables are TRUE
INCLUDE (FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS (V4L2 DEFAULT_MSG
V4L2_LIBRARY V4L2_CONVERT_LIBRARY V4L2_INCLUDE_DIR V4L2_CONVERT_INCLUDE_DIR)
IF (NOT V4L2_FOUND)
MESSAGE (WARNING "libv4l2 or libv4lconvert libraries from http://linuxtv.org not found!")
ENDIF (NOT V4L2_FOUND)
IF (NOT _videodev2)
MESSAGE (WARNING "videodev2.h kernel header not found!")
SET (V4L2_FOUND 0)
ENDIF(NOT _videodev2)
MARK_AS_ADVANCED (V4L2_INCLUDE_DIR V4L2_CONVERT_INCLUDE_DIR V4L2_LIBRARY V4L2_CONVERT_LIBRARY)
##EOF