Celestia

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# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#.rst:
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# FindLibavif
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# --------
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#
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# Find the avif headers and libraries.
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#
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# This module reports information about the avif
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# installation in several variables.  General variables::
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#
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#   LIBAVIF_FOUND - true if the avif headers and libraries were found
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#   LIBAVIF_INCLUDE_DIRS - the directory containing the avif headers
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#   LIBAVIF_LIBRARIES - avif libraries to be linked
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#
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# The following cache variables may also be set::
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#
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#   LIBAVIF_INCLUDE_DIR - the directory containing the avif headers
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#   LIBAVIF_LIBRARY - the avif library (if any)
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# Find include directory
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# TODO: use pkgconfig
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find_path(LIBAVIF_INCLUDE_DIR
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          NAMES avif/avif.h
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          HINTS LIBAVIF_DIR
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          DOC "avif headers")
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mark_as_advanced(LIBAVIF_INCLUDE_DIR)
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find_library(LIBAVIF_LIBRARY
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             NAMES avif
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             HINTS LIBAVIF_DIR
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             DOC "avif libraries")
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mark_as_advanced(LIBAVIF_LIBRARY)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Libavif
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                                  FOUND_VAR LIBAVIF_FOUND
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                                  REQUIRED_VARS LIBAVIF_INCLUDE_DIR LIBAVIF_LIBRARY
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                                  FAIL_MESSAGE "Failed to find avif")
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if(LIBAVIF_FOUND)
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  set(LIBAVIF_INCLUDE_DIRS "${LIBAVIF_INCLUDE_DIR}")
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  if(LIBAVIF_LIBRARY)
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    set(LIBAVIF_LIBRARIES "${LIBAVIF_LIBRARY}")
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  else()
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    unset(LIBAVIF_LIBRARIES)
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  endif()
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  if(NOT TARGET libavif::libavif)
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    add_library(libavif::libavif UNKNOWN IMPORTED)
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    set_target_properties(libavif::libavif PROPERTIES
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      INTERFACE_INCLUDE_DIRECTORIES "${LIBAVIF_INCLUDE_DIRS}")
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    set_target_properties(libavif::libavif PROPERTIES
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      IMPORTED_LOCATION "${LIBAVIF_LIBRARY}")
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  endif()
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endif()
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