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# Locate SDL2_image library
# This module defines
# SDL2_IMAGE_LIBRARY, the name of the library to link against
# SDL2_IMAGE_FOUND, if false, do not try to link to SDL2_image
# SDL2_IMAGE_INCLUDE_DIR, where to find SDL.h
#
# Source: https://code.google.com/p/freerct/source/browse/trunk/CMake/FindSDL2_ttf.cmake
#
# $SDL2_IMAGE_DIR is an environment variable that would
# correspond to the ./configure --prefix=$SDL2_IMAGE_DIR
# used in building SDL2_image.
# l.e.galup 9-20-02
#
# Modified by Eric Wing.
# Added code to assist with automated building by using environmental variables
# and providing a more controlled/consistent search behavior.
# Added new modifications to recognize OS X frameworks and
# additional Unix paths (FreeBSD, etc).
# Also corrected the header search path to follow "proper" SDL guidelines.
# Added a search for SDL2main which is needed by some platforms.
# Added a search for threads which is needed by some platforms.
# Added needed compile switches for MinGW.
#
# On OSX, this will prefer the Framework version (if found) over others.
# People will have to manually change the cache values of
# SDL2_LIBRARY to override this selection or set the CMake environment
# CMAKE_INCLUDE_PATH to modify the search paths.
#
# Note that the header path has changed from SDL2/SDL.h to just SDL.h
# This needed to change because "proper" SDL convention
# is #include "SDL.h", not <SDL2/SDL.h>. This is done for portability
# reasons because not all systems place things in SDL2/ (see FreeBSD).
#=============================================================================
# Copyright 2003-2009 Kitware, Inc.
#
# 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.)
SET(SDL2_IMAGE_SEARCH_PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local
/usr
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
)
FIND_PATH(SDL2_IMAGE_INCLUDE_DIR SDL_image.h
HINTS
$ENV{SDL2_IMAGE_DIR}
PATH_SUFFIXES include/SDL2 include
PATHS ${SDL2_IMAGE_SEARCH_PATHS}
)
FIND_LIBRARY(SDL2_IMAGE_LIBRARY_TEMP
NAMES SDL2_image
HINTS
$ENV{SDL2_IMAGE_DIR}
PATH_SUFFIXES lib64 lib
PATHS ${SDL2_IMAGE_SEARCH_PATHS}
)
# SDL2_image may require threads on your system.
# The Apple build may not need an explicit flag because one of the
# frameworks may already provide it.
# But for non-OSX systems, I will use the CMake Threads package.
# IF(NOT APPLE)
# FIND_PACKAGE(Threads)
# ENDIF(NOT APPLE)
# MinGW needs an additional library, mwindows
# It's total link flags should look like -lmingw32 -lSDL2_image -lmwindows
# (Actually on second look, I think it only needs one of the m* libraries.)
IF(MINGW)
SET(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW")
ENDIF(MINGW)
IF(SDL2_IMAGE_LIBRARY_TEMP)
# For OS X, SDL2_IMAGE uses Cocoa as a backend so it must link to Cocoa.
# CMake doesn't display the -framework Cocoa string in the UI even
# though it actually is there if I modify a pre-used variable.
# I think it has something to do with the CACHE STRING.
# So I use a temporary variable until the end so I can set the
# "real" variable in one-shot.
# IF(APPLE)
# SET(SDL2_IMAGE_LIBRARY_TEMP ${SDL2_IMAGE_LIBRARY_TEMP} "-framework Cocoa")
# ENDIF(APPLE)
# For threads, as mentioned Apple doesn't need this.
# In fact, there seems to be a problem if I used the Threads package
# and try using this line, so I'm just skipping it entirely for OS X.
# IF(NOT APPLE)
# SET(SDL2_IMAGE_LIBRARY_TEMP ${SDL2_IMAGE_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
# ENDIF(NOT APPLE)
# For MinGW library
# IF(MINGW)
# SET(SDL2_IMAGE_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_IMAGE_LIBRARY_TEMP})
# ENDIF(MINGW)
# Set the final string here so the GUI reflects the final state.
SET(SDL2_IMAGE_LIBRARY ${SDL2_IMAGE_LIBRARY_TEMP} CACHE STRING "Where the SDL2_IMAGE Library can be found")
# Set the temp variable to INTERNAL so it is not seen in the CMake GUI
SET(SDL2_IMAGE_LIBRARY_TEMP "${SDL2_IMAGE_LIBRARY_TEMP}" CACHE INTERNAL "")
ENDIF(SDL2_IMAGE_LIBRARY_TEMP)
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_image REQUIRED_VARS SDL2_IMAGE_LIBRARY SDL2_IMAGE_INCLUDE_DIR)
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