cmake_modules/FindSDL2_mixer.cmake
author Wuzzy <Wuzzy2@mail.ru>
Thu, 03 Jan 2019 19:46:48 +0100
changeset 14535 5ac181cb2396
parent 12383 e3d9abcc427a
permissions -rw-r--r--
Fix bee targeting fail across wrap world edge Previously, the bee always aimed for the light area, no matter where you actually put the target. It also got confused whenever it flew across the wrap world edge. How the bee works now: 1) The placed bee target is *not* recalculated when it was placed in the "gray" part of the wrap world edge. This allows for more fine-tuning. 1a) Place target in light area: bee aims for target light area 1b) Place target in gray area: bee aims for target, but flies to gray area first 2) Bee target is recalculated whenever bee passes the wrap world edge.

# - 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)