Alf Gaida
7 years ago
parent
e6ed253846
commit
4f6bd462c8
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# BSD-3-Clause file for details.
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#.rst:
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# FindExif
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# -----------
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#
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# Try to find the Exif library
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#
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# Once done this will define
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#
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# ::
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#
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# EXIF_FOUND - System has the Exif library
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# EXIF_INCLUDE_DIR - The Exif library include directory
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# EXIF_INCLUDE_DIRS - Location of the headers needed to use the Exif library
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# EXIF_LIBRARIES - The libraries needed to use the Exif library
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# EXIF_DEFINITIONS - Compiler switches required for using the Exif library
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# EXIF_VERSION_STRING - the version of the Exif library found
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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 QUIET)
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pkg_check_modules(PC_EXIF QUIET libexif)
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set(EXIF_DEFINITIONS ${PC_EXIF_CFLAGS_OTHER})
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find_path(EXIF_INCLUDE_DIR NAMES libexif/exif-data.h
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HINTS
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${PC_EXIF_INCLUDEDIR}
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${PC_EXIF_INCLUDE_DIRS}
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PATH_SUFFIXES libexif
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)
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find_library(EXIF_LIBRARIES NAMES exif libexif
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HINTS
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${PC_EXIF_LIBDIR}
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${PC_EXIF_LIBRARY_DIRS}
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)
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# iterate over all dependencies
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unset(FD_LIBRARIES)
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foreach(depend ${PC_EXIF_LIBRARIES})
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find_library(_DEPEND_LIBRARIES
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NAMES
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${depend}
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HINTS
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${PC_EXIF_LIBDIR}
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${PC_EXIF_LIBRARY_DIRS}
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)
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if (_DEPEND_LIBRARIES)
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list(APPEND FD_LIBRARIES ${_DEPEND_LIBRARIES})
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endif()
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unset(_DEPEND_LIBRARIES CACHE)
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endforeach()
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set(EXIF_VERSION_STRING ${PC_EXIF_VERSION})
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set(EXIF_INCLUDE_DIR ${PC_EXIF_INCLUDEDIR})
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list(APPEND EXIF_INCLUDE_DIRS
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${EXIF_INCLUDE_DIR}
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${PC_EXIF_INCLUDE_DIRS}
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)
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list(REMOVE_DUPLICATES EXIF_INCLUDE_DIRS)
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list(APPEND EXIF_LIBRARIES
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${FD_LIBRARIES}
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)
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list(REMOVE_DUPLICATES EXIF_LIBRARIES)
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# handle the QUIETLY and REQUIRED arguments and set EXIF_FOUND to TRUE if
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# all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Exif
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REQUIRED_VARS EXIF_LIBRARIES EXIF_INCLUDE_DIR EXIF_INCLUDE_DIRS
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VERSION_VAR EXIF_VERSION_STRING)
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mark_as_advanced(EXIF_INCLUDE_DIR EXIF_LIBRARIES)
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