cmake_modules/FindSDL2_image.cmake
branchsdl2transition
changeset 9677 71626318f80e
child 11657 ae6706411b24
equal deleted inserted replaced
9676:ce7396d4eaf7 9677:71626318f80e
       
     1 # - Locate SDL2_image library
       
     2 # This module defines:
       
     3 #  SDL2_IMAGE_LIBRARIES, the name of the library to link against
       
     4 #  SDL2_IMAGE_INCLUDE_DIRS, where to find the headers
       
     5 #  SDL2_IMAGE_FOUND, if false, do not try to link against
       
     6 #  SDL2_IMAGE_VERSION_STRING - human-readable string containing the version of SDL2_image
       
     7 #
       
     8 # For backward compatiblity the following variables are also set:
       
     9 #  SDL2IMAGE_LIBRARY (same value as SDL2_IMAGE_LIBRARIES)
       
    10 #  SDL2IMAGE_INCLUDE_DIR (same value as SDL2_IMAGE_INCLUDE_DIRS)
       
    11 #  SDL2IMAGE_FOUND (same value as SDL2_IMAGE_FOUND)
       
    12 #
       
    13 # $SDL2DIR is an environment variable that would
       
    14 # correspond to the ./configure --prefix=$SDL2DIR
       
    15 # used in building SDL2.
       
    16 #
       
    17 # Created by Eric Wing. This was influenced by the FindSDL2.cmake
       
    18 # module, but with modifications to recognize OS X frameworks and
       
    19 # additional Unix paths (FreeBSD, etc).
       
    20 
       
    21 #=============================================================================
       
    22 # Copyright 2005-2009 Kitware, Inc.
       
    23 # Copyright 2012 Benjamin Eikel
       
    24 #
       
    25 # Distributed under the OSI-approved BSD License (the "License");
       
    26 # see accompanying file Copyright.txt for details.
       
    27 #
       
    28 # This software is distributed WITHOUT ANY WARRANTY; without even the
       
    29 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       
    30 # See the License for more information.
       
    31 #=============================================================================
       
    32 # (To distribute this file outside of CMake, substitute the full
       
    33 #  License text for the above reference.)
       
    34 
       
    35 if(NOT SDL2_IMAGE_INCLUDE_DIR AND SDL2IMAGE_INCLUDE_DIR)
       
    36   set(SDL2_IMAGE_INCLUDE_DIR ${SDL2IMAGE_INCLUDE_DIR} CACHE PATH "directory cache
       
    37 entry initialized from old variable name")
       
    38 endif()
       
    39 find_path(SDL2_IMAGE_INCLUDE_DIR SDL_image.h
       
    40   HINTS
       
    41     ENV SDL2IMAGEDIR
       
    42     ENV SDL2DIR
       
    43   PATH_SUFFIXES include/SDL2 include
       
    44 )
       
    45 
       
    46 if(NOT SDL2_IMAGE_LIBRARY AND SDL2IMAGE_LIBRARY)
       
    47   set(SDL2_IMAGE_LIBRARY ${SDL2IMAGE_LIBRARY} CACHE FILEPATH "file cache entry
       
    48 initialized from old variable name")
       
    49 endif()
       
    50 find_library(SDL2_IMAGE_LIBRARY
       
    51   NAMES SDL2_image
       
    52   HINTS
       
    53     ENV SDL2IMAGEDIR
       
    54     ENV SDL2DIR
       
    55   PATH_SUFFIXES lib
       
    56 )
       
    57 
       
    58 if(SDL2_IMAGE_INCLUDE_DIR AND EXISTS "${SDL2_IMAGE_INCLUDE_DIR}/SDL2_image.h")
       
    59   file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL2_image.h" SDL2_IMAGE_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL2_IMAGE_MAJOR_VERSION[ \t]+[0-9]+$")
       
    60   file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL2_image.h" SDL2_IMAGE_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL2_IMAGE_MINOR_VERSION[ \t]+[0-9]+$")
       
    61   file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL2_image.h" SDL2_IMAGE_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL2_IMAGE_PATCHLEVEL[ \t]+[0-9]+$")
       
    62   string(REGEX REPLACE "^#define[ \t]+SDL2_IMAGE_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_MAJOR "${SDL2_IMAGE_VERSION_MAJOR_LINE}")
       
    63   string(REGEX REPLACE "^#define[ \t]+SDL2_IMAGE_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_MINOR "${SDL2_IMAGE_VERSION_MINOR_LINE}")
       
    64   string(REGEX REPLACE "^#define[ \t]+SDL2_IMAGE_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_PATCH "${SDL2_IMAGE_VERSION_PATCH_LINE}")
       
    65   set(SDL2_IMAGE_VERSION_STRING ${SDL2_IMAGE_VERSION_MAJOR}.${SDL2_IMAGE_VERSION_MINOR}.${SDL2_IMAGE_VERSION_PATCH})
       
    66   unset(SDL2_IMAGE_VERSION_MAJOR_LINE)
       
    67   unset(SDL2_IMAGE_VERSION_MINOR_LINE)
       
    68   unset(SDL2_IMAGE_VERSION_PATCH_LINE)
       
    69   unset(SDL2_IMAGE_VERSION_MAJOR)
       
    70   unset(SDL2_IMAGE_VERSION_MINOR)
       
    71   unset(SDL2_IMAGE_VERSION_PATCH)
       
    72 endif()
       
    73 
       
    74 set(SDL2_IMAGE_LIBRARIES ${SDL2_IMAGE_LIBRARY})
       
    75 set(SDL2_IMAGE_INCLUDE_DIRS ${SDL2_IMAGE_INCLUDE_DIR})
       
    76 
       
    77 include(FindPackageHandleStandardArgs)
       
    78 
       
    79 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_image
       
    80                                   REQUIRED_VARS SDL2_IMAGE_LIBRARIES SDL2_IMAGE_INCLUDE_DIRS
       
    81                                   VERSION_VAR SDL2_IMAGE_VERSION_STRING)
       
    82 
       
    83 # for backward compatiblity
       
    84 set(SDL2IMAGE_LIBRARY ${SDL2_IMAGE_LIBRARIES})
       
    85 set(SDL2IMAGE_INCLUDE_DIR ${SDL2_IMAGE_INCLUDE_DIRS})
       
    86 set(SDL2IMAGE_FOUND ${SDL2_IMAGE_FOUND})
       
    87 
       
    88 mark_as_advanced(SDL2_IMAGE_LIBRARY SDL2_IMAGE_INCLUDE_DIR)