cmake/FindSDL2_mixer.cmake

   1 # - Locate SDL2_mixer library (modified from Cmake's FindSDL_mixer.cmake)
   2 # This module defines:
   3 #  SDL2_MIXER_LIBRARIES, the name of the library to link against
   4 #  SDL2_MIXER_INCLUDE_DIRS, where to find the headers
   5 #  SDL2_MIXER_FOUND, if false, do not try to link against
   6 #  SDL2_MIXER_VERSION_STRING - human-readable string containing the version of SDL2_mixer
   7 #
   8 # For backward compatiblity the following variables are also set:
   9 #  SDL2MIXER_LIBRARY (same value as SDL2_MIXER_LIBRARIES)
  10 #  SDL2MIXER_INCLUDE_DIR (same value as SDL2_MIXER_INCLUDE_DIRS)
  11 #  SDL2MIXER_FOUND (same value as SDL2_MIXER_FOUND)
  12 #
  13 # $SDLDIR is an environment variable that would
  14 # correspond to the ./configure --prefix=$SDLDIR
  15 # used in building SDL.
  16 #
  17 #=============================================================================
  18 # Copyright 2000-2014 Kitware, Inc.
  19 # Copyright 2000-2011 Insight Software Consortium
  20 # Copyright 2014 Justin Jacobs
  21 # All rights reserved.
  22 #
  23 # Distributed under the OSI-approved BSD License (the "License");
  24 # see accompanying file Copyright.txt for details.
  25 #
  26 # This software is distributed WITHOUT ANY WARRANTY; without even the
  27 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  28 # See the License for more information.
  29 #=============================================================================
  30
  31 if(NOT SDL2_MIXER_INCLUDE_DIR AND SDL2MIXER_INCLUDE_DIR)
  32   set(SDL2_MIXER_INCLUDE_DIR ${SDL2MIXER_INCLUDE_DIR} CACHE PATH "directory cache
  33 entry initialized from old variable name")
  34 endif()
  35 find_path(SDL2_MIXER_INCLUDE_DIR SDL_mixer.h
  36   HINTS
  37     ENV SDLMIXERDIR
  38     ENV SDLDIR
  39   PATH_SUFFIXES include/SDL2 include
  40 )
  41
  42 if(NOT SDL2_MIXER_LIBRARY AND SDL2MIXER_LIBRARY)
  43   set(SDL2_MIXER_LIBRARY ${SDL2MIXER_LIBRARY} CACHE FILEPATH "file cache entry
  44 initialized from old variable name")
  45 endif()
  46 find_library(SDL2_MIXER_LIBRARY
  47   NAMES SDL2_mixer
  48   HINTS
  49     ENV SDLMIXERDIR
  50     ENV SDLDIR
  51   PATH_SUFFIXES lib
  52 )
  53
  54 if(SDL2_MIXER_INCLUDE_DIR AND EXISTS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h")
  55   file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+[0-9]+$")
  56   file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+[0-9]+$")
  57   file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+[0-9]+$")
  58   string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MAJOR "${SDL2_MIXER_VERSION_MAJOR_LINE}")
  59   string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MINOR "${SDL2_MIXER_VERSION_MINOR_LINE}")
  60   string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_PATCH "${SDL2_MIXER_VERSION_PATCH_LINE}")
  61   set(SDL2_MIXER_VERSION_STRING ${SDL2_MIXER_VERSION_MAJOR}.${SDL2_MIXER_VERSION_MINOR}.${SDL2_MIXER_VERSION_PATCH})
  62   unset(SDL2_MIXER_VERSION_MAJOR_LINE)
  63   unset(SDL2_MIXER_VERSION_MINOR_LINE)
  64   unset(SDL2_MIXER_VERSION_PATCH_LINE)
  65   unset(SDL2_MIXER_VERSION_MAJOR)
  66   unset(SDL2_MIXER_VERSION_MINOR)
  67   unset(SDL2_MIXER_VERSION_PATCH)
  68 endif()
  69
  70 set(SDL2_MIXER_LIBRARIES ${SDL2_MIXER_LIBRARY})
  71 set(SDL2_MIXER_INCLUDE_DIRS ${SDL2_MIXER_INCLUDE_DIR})
  72
  73 include(FindPackageHandleStandardArgs)
  74
  75 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_mixer
  76                                   REQUIRED_VARS SDL2_MIXER_LIBRARIES SDL2_MIXER_INCLUDE_DIRS
  77                                   VERSION_VAR SDL2_MIXER_VERSION_STRING)
  78
  79 # for backward compatiblity
  80 set(SDL2MIXER_LIBRARY ${SDL2_MIXER_LIBRARIES})
  81 set(SDL2MIXER_INCLUDE_DIR ${SDL2_MIXER_INCLUDE_DIRS})
  82 set(SDL2MIXER_FOUND ${SDL2_MIXER_FOUND})
  83
  84 mark_as_advanced(SDL2_MIXER_LIBRARY SDL2_MIXER_INCLUDE_DIR)