# - Find libvorbis
# Find the native vorbis headers
#
#  VORBIS_INCLUDE_DIR  - where to find vorbisenc.h, etc.
#  VORBIS_LIBRARIES    - vorbis library
#  VORBIS_DEFINES      - vorbis defines
#  VORBIS_FOUND        - True if vorbis found.

IF(VORBIS_FOUND)
    # Already in cache, be silent
    SET(VORBIS_FIND_QUIETLY TRUE)
ENDIF()

#INCLUDE(${CMAKE_CURRENT_LIST_DIR}/DefinesVORBIS.txt)

IF(BUILD_VORBIS OR ACGL_GLOBAL_EXTERN_DIR_FOUND_FIRST_TIME OR BUILD_TYPE_CHANGED)
    UNSET(VORBIS_INCLUDE_DIR CACHE)
    UNSET(VORBIS_LIBRARIES CACHE)
ENDIF()

IF(BUILD_VORBIS)
    SET(VORBIS_INCLUDE_DIR "${ACGL_LOCAL_EXTERN_DIR}/vorbis/include")
    SET(VORBIS_LIBRARIES vorbis${COMPILE_POSTFIX})
ELSE()
    # Look for the header file.
    IF(ACGL_GLOBAL_EXTERN_DIR)
        FIND_PATH(VORBIS_INCLUDE_DIR NAMES vorbis/vorbisenc.h PATHS "${ACGL_GLOBAL_EXTERN_DIR}/vorbis/include" NO_DEFAULT_PATH)
    ENDIF()
    IF(NOT VORBIS_INCLUDE_DIR)
        FIND_PATH(VORBIS_INCLUDE_DIR NAMES vorbis/vorbisenc.h)
    ENDIF()

    # Look for the library file.
    IF(ACGL_GLOBAL_EXTERN_DIR)
        FIND_LIBRARY(VORBIS_LIBRARIES NAMES vorbis${COMPILE_POSTFIX} PATHS "${ACGL_GLOBAL_EXTERN_DIR}/vorbis/lib" NO_DEFAULT_PATH)
    ENDIF()
    IF(NOT VORBIS_LIBRARIES)
        FIND_LIBRARY(VORBIS_LIBRARIES NAMES vorbis)
    ENDIF()
ENDIF()

# Copy the results to the output variables.
IF(VORBIS_INCLUDE_DIR AND VORBIS_LIBRARIES)
    SET(VORBIS_FOUND TRUE CACHE INTERNAL "")
ELSE()
    SET(VORBIS_FOUND FALSE CACHE INTERNAL "")
ENDIF()

# Report the results.
IF(NOT VORBIS_FOUND)
    SET(VORBIS_MESSAGE "vorbis was not found. Make sure VORBIS_INCLUDE_DIR AND VORBIS_LIBRARIES are set correctly.")
    IF(VORBIS_FIND_REQUIRED)
        MESSAGE(FATAL_ERROR "${VORBIS_MESSAGE}")
    ELSEIF(NOT VORBIS_FIND_QUIETLY)
        MESSAGE(STATUS "${VORBIS_MESSAGE}")
    ENDIF()
ELSEIF(NOT VORBIS_FIND_QUIETLY)
    MESSAGE(STATUS "Looking for vorbis - found")
ENDIF()

MESSAGE(STATUS "VORBIS_INCLUDE_DIR:${VORBIS_INCLUDE_DIR}")
MESSAGE(STATUS "VORBIS_LIBRARIES:${VORBIS_LIBRARIES}")