# - Find FLAC
# Find the native FLAC includes and libraries
#
#  FLAC_INCLUDE_DIRS - where to find FLAC headers.
#  FLAC_LIBRARIES    - List of libraries when using libFLAC.
#  FLAC_FOUND        - True if libFLAC found.
#  FLAC_DEFINITIONS  - FLAC compile definitons 

if(FLAC_INCLUDE_DIR)
  # Already in cache, be silent
  set(FLAC_FIND_QUIETLY TRUE)
endif()

find_package(Ogg QUIET)

find_package(PkgConfig QUIET)
pkg_check_modules(PC_FLAC QUIET flac)

set(FLAC_VERSION ${PC_FLAC_VERSION})

find_path(FLAC_INCLUDE_DIR FLAC/stream_decoder.h
  HINTS
    ${PC_FLAC_INCLUDEDIR}
    ${PC_FLAC_INCLUDE_DIRS}
    ${FLAC_ROOT})

# MSVC built libraries can name them *_static, which is good as it
# distinguishes import libraries from static libraries with the same extension.
find_library(FLAC_LIBRARY
  NAMES
    FLAC
    libFLAC
    libFLAC_dynamic
    libFLAC_static
  HINTS
    ${PC_FLAC_LIBDIR}
    ${PC_FLAC_LIBRARY_DIRS}
    ${FLAC_ROOT})

# Handle the QUIETLY and REQUIRED arguments and set FLAC_FOUND to TRUE if
# all listed variables are TRUE.
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(FLAC
  REQUIRED_VARS
    FLAC_LIBRARY
    FLAC_INCLUDE_DIR
    Ogg_FOUND
  VERSION_VAR
        FLAC_VERSION)

if(FLAC_FOUND)
  set(FLAC_INCLUDE_DIRS ${FLAC_INCLUDE_DIR} ${Ogg_INCLUDE_DIRS})
  set(FLAC_LIBRARIES ${FLAC_LIBRARY} ${Ogg_LIBRARIES})
    if(NOT TARGET FLAC::FLAC)
    add_library(FLAC::FLAC UNKNOWN IMPORTED)
    set_target_properties(FLAC::FLAC PROPERTIES
      INTERFACE_INCLUDE_DIRECTORIES "${FLAC_INCLUDE_DIR}"
      IMPORTED_LOCATION "${FLAC_LIBRARY}"
      INTERFACE_LINK_LIBRARIES Ogg::ogg)
  endif()
endif()

mark_as_advanced(FLAC_INCLUDE_DIR FLAC_LIBRARY)