# - Locate SDL2_mixer library

# This module defines:

#  SDL2_MIXER_LIBRARIES, the name of the library to link against

#  SDL2_MIXER_INCLUDE_DIRS, where to find the headers

#  SDL2_MIXER_FOUND, if false, do not try to link against

#  SDL2_MIXER_VERSION_STRING - human-readable string containing the version of SDL2_mixer

#

# For backward compatiblity the following variables are also set:

#  SDL2MIXER_LIBRARY (same value as SDL2_MIXER_LIBRARIES)

#  SDL2MIXER_INCLUDE_DIR (same value as SDL2_MIXER_INCLUDE_DIRS)

#  SDL2MIXER_FOUND (same value as SDL2_MIXER_FOUND)

#

# $SDL2DIR is an environment variable that would

# correspond to the ./configure --prefix=$SDL2DIR

# used in building SDL2.

#

# Created by Eric Wing. This was influenced by the FindSDL2.cmake

# module, but with modifications to recognize OS X frameworks and

# additional Unix paths (FreeBSD, etc).

#=============================================================================

# Copyright 2005-2009 Kitware, Inc.

# Copyright 2012 Benjamin Eikel

#

# Distributed under the OSI-approved BSD License (the "License");

# see accompanying file Copyright.txt for details.

#

# This software is distributed WITHOUT ANY WARRANTY; without even the

# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# See the License for more information.

#=============================================================================

# (To distribute this file outside of CMake, substitute the full

#  License text for the above reference.)

if(NOT SDL2_MIXER_INCLUDE_DIR AND SDL2MIXER_INCLUDE_DIR)

  set(SDL2_MIXER_INCLUDE_DIR ${SDL2MIXER_INCLUDE_DIR} CACHE PATH "directory cache entry initialized from old variable name")

endif()

find_path(SDL2_MIXER_INCLUDE_DIR SDL_mixer.h

  HINTS

    ENV SDL2MIXERDIR

    ENV SDL2DIR

  PATH_SUFFIXES include/SDL2 include

)

if(NOT SDL2_MIXER_LIBRARY AND SDL2MIXER_LIBRARY)

  set(SDL2_MIXER_LIBRARY ${SDL2MIXER_LIBRARY} CACHE FILEPATH "file cache entry

initialized from old variable name")

endif()

find_library(SDL2_MIXER_LIBRARY

  NAMES SDL2_mixer

  HINTS

    ENV SDL2MIXERDIR

    ENV SDL2DIR

  PATH_SUFFIXES lib

)

if(SDL2_MIXER_INCLUDE_DIR AND EXISTS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h")

  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+[0-9]+$")

  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+[0-9]+$")

  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+[0-9]+$")

  string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MAJOR "${SDL2_MIXER_VERSION_MAJOR_LINE}")

  string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MINOR "${SDL2_MIXER_VERSION_MINOR_LINE}")

  string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_PATCH "${SDL2_MIXER_VERSION_PATCH_LINE}")

  set(SDL2_MIXER_VERSION_STRING ${SDL2_MIXER_VERSION_MAJOR}.${SDL2_MIXER_VERSION_MINOR}.${SDL2_MIXER_VERSION_PATCH})

  unset(SDL2_MIXER_VERSION_MAJOR_LINE)

  unset(SDL2_MIXER_VERSION_MINOR_LINE)

  unset(SDL2_MIXER_VERSION_PATCH_LINE)

  unset(SDL2_MIXER_VERSION_MAJOR)

  unset(SDL2_MIXER_VERSION_MINOR)

  unset(SDL2_MIXER_VERSION_PATCH)

endif()

set(SDL2_MIXER_LIBRARIES ${SDL2_MIXER_LIBRARY})

set(SDL2_MIXER_INCLUDE_DIRS ${SDL2_MIXER_INCLUDE_DIR})

if(BUILD_ENGINE_JS)

    set(SDL2_MIXER_LIBRARY "sdl2_mixer_emscripten_internal")

    set(SDL2_MIXER_LIBRARIES "sdl2_mixer_emscripten_internal")

    set(SDL2_MIXER_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")

endif()

include(FindPackageHandleStandardArgs)

FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_mixer

                                  REQUIRED_VARS SDL2_MIXER_LIBRARIES SDL2_MIXER_INCLUDE_DIRS

                                  VERSION_VAR SDL2_MIXER_VERSION_STRING)

# for backward compatiblity

set(SDLMIXER_LIBRARY ${SDL2_MIXER_LIBRARIES})

set(SDLMIXER_INCLUDE_DIR ${SDL2_MIXER_INCLUDE_DIRS})

set(SDLMIXER_FOUND ${SDL2_MIXER_FOUND})

mark_as_advanced(SDL2_MIXER_LIBRARY SDL2_MIXER_INCLUDE_DIR)