# - Try to find the OggVorbis libraries

# Once done this will define

#

#  OGGVORBIS_FOUND       - system has both Ogg and Vorbis

#  OGGVORBIS_VERSION     - set either to 1 or 2

#  OGGVORBIS_INCLUDE_DIR - the OggVorbis include directory

#  OGGVORBIS_LIBRARIES   - the libraries needed to use OggVorbis

#

#  OGG_LIBRARY           - the Ogg library

#  OGG_INCLUDE_DIR       - the Ogg include directory

#  VORBIS_LIBRARY        - the Vorbis library

#  VORBIS_INCLUDE_DIR    - the Vorbis include directory

#  VORBISFILE_LIBRARY    - the VorbisFile library

#

# Copyright (c) 2006, Richard Laerkaeng <richard@goteborg.utfors.se>

# Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>

#

# Redistribution and use is allowed according to the terms of the BSD license.

# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

### sommer [SuperTux]

##  - Removed unused vorbisenc library

##  - reversed order of libraries, so that cmake 2.4.5 for Windows generates an MSYS Makefile that will link correctly

### koda [Hedgewars]

##  - split ogg and vorbis lookup

##  - special case for framework handling

##  - standard variables handling

include (CheckLibraryExists)

include (FindPackageHandleStandardArgs)

find_path(OGG_INCLUDE_DIR ogg.h PATH_SUFFIXES ogg)

find_path(VORBIS_INCLUDE_DIR vorbisfile.h PATH_SUFFIXES vorbis)

find_library(OGG_LIBRARY NAMES Ogg ogg)

find_library(VORBIS_LIBRARY NAMES Vorbis vorbis)

find_library(VORBISFILE_LIBRARY NAMES vorbisfile)

set(_CMAKE_REQUIRED_LIBRARIES_TMP ${CMAKE_REQUIRED_LIBRARIES})

set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${OGGVORBIS_LIBRARIES})

check_library_exists(${VORBIS_LIBRARY} vorbis_bitrate_addblock "" HAVE_LIBVORBISENC2)

set(CMAKE_REQUIRED_LIBRARIES ${_CMAKE_REQUIRED_LIBRARIES_TMP})

if(HAVE_LIBVORBISENC2)

    set(OGGVORBIS_VERSION 2)

else(HAVE_LIBVORBISENC2)

    set(OGGVORBIS_VERSION 1)

endif(HAVE_LIBVORBISENC2)

if(${OGG_LIBRARY} MATCHES ".framework" AND ${VORBIS_LIBRARY} MATCHES ".framework")

    set(VORBISFILE_LIBRARY "") #vorbisfile will appear as NOTFOUND and discarded

    set(fphsa_vorbis_list VORBIS_LIBRARY)

else()

    set(fphsa_vorbis_list VORBISFILE_LIBRARY VORBIS_LIBRARY)

endif()

find_package_handle_standard_args(OggVorbis DEFAULT_MSG ${fphsa_vorbis_list} OGG_LIBRARY

                                                        OGG_INCLUDE_DIR VORBIS_INCLUDE_DIR)

unset(fphsa_vorbis_list)

set(OGGVORBIS_LIBRARIES ${VORBISFILE_LIBRARY} ${VORBIS_LIBRARY} ${OGG_LIBRARY})

set(OGGVORBIS_INCLUDE_DIR ${VORBIS_INCLUDE_DIR} ${OGG_INCLUDE_DIR})

mark_as_advanced(OGGVORBIS_VERSION OGGVORBIS_INCLUDE_DIR OGGVORBIS_LIBRARIES

                 OGG_LIBRARY OGG_INCLUDE_DIR VORBIS_LIBRARY VORBIS_INCLUDE_DIR VORBISFILE_LIBRARY)