From f577e44fc3967762f15b152f2213f3f79ad5bdd7 Mon Sep 17 00:00:00 2001 From: gered Date: Tue, 6 Sep 2016 17:27:12 -0400 Subject: [PATCH] update FindSDL2.cmake --- cmake/FindSDL2.cmake | 456 +++++++++++++++++++++---------------------- 1 file changed, 228 insertions(+), 228 deletions(-) diff --git a/cmake/FindSDL2.cmake b/cmake/FindSDL2.cmake index f24af55..d1db42a 100644 --- a/cmake/FindSDL2.cmake +++ b/cmake/FindSDL2.cmake @@ -1,249 +1,249 @@ -# Locate SDL2 library -# This module defines -# SDL2_LIBRARY, the name of the library to link against -# SDL2_FOUND, if false, do not try to link to SDL2 -# SDL2_INCLUDE_DIR, where to find SDL.h +# - Find SDL2 +# Find the SDL2 headers and libraries # -# This module responds to the the flag: -# SDL2_BUILDING_LIBRARY -# If this is defined, then no SDL2_main will be linked in because -# only applications need main(). -# Otherwise, it is assumed you are building an application and this -# module will attempt to locate and set the the proper link flags -# as part of the returned SDL2_LIBRARY variable. +# SDL2::SDL2 - Imported target to use for building a library +# SDL2::SDL2main - Imported interface target to use if you want SDL and SDLmain. +# SDL2_FOUND - True if SDL2 was found. +# SDL2_DYNAMIC - If we found a DLL version of SDL (meaning you might want to copy a DLL from SDL2::SDL2) # -# Don't forget to include SDL2main.h and SDL2main.m your project for the -# OS X framework based version. (Other versions link to -lSDL2main which -# this module will try to find on your behalf.) Also for OS X, this -# module will automatically add the -framework Cocoa on your behalf. +# Original Author: +# 2015 Ryan Pavlik # -# -# Additional Note: If you see an empty SDL2_LIBRARY_TEMP in your configuration -# and no SDL2_LIBRARY, it means CMake did not find your SDL2 library -# (SDL2.dll, libsdl2.so, SDL2.framework, etc). -# Set SDL2_LIBRARY_TEMP to point to your SDL2 library, and configure again. -# Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value -# as appropriate. These values are used to generate the final SDL2_LIBRARY -# variable, but when these values are unset, SDL2_LIBRARY does not get created. -# -# -# $SDL2 is an environment variable that would -# correspond to the ./configure --prefix=$SDL2 -# used in building SDL2. -# 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" SDL2 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" SDL2 convention -# is #include "SDL.h", not . This is done for portability -# reasons because not all systems place things in SDL2/ (see FreeBSD). -# -# Ported by Johnny Patterson. This is a literal port for SDL2 of the FindSDL.cmake -# module with the minor edit of changing "SDL" to "SDL2" where necessary. This -# was not created for redistribution, and exists temporarily pending official -# SDL2 CMake modules. -# -# Note that on windows this will only search for the 32bit libraries, to search -# for 64bit change x86/i686-w64 to x64/x86_64-w64 +# Copyright Sensics, Inc. 2015. +# Distributed under the Boost Software License, Version 1.0. +# (See accompanying file LICENSE_1_0.txt or copy at +# http://www.boost.org/LICENSE_1_0.txt) -#============================================================================= -# Copyright 2003-2009 Kitware, Inc. -# -# CMake - Cross Platform Makefile Generator -# Copyright 2000-2014 Kitware, Inc. -# Copyright 2000-2011 Insight Software Consortium -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions -# are met: -# -# * Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# -# * Redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution. -# -# * Neither the names of Kitware, Inc., the Insight Software Consortium, -# nor the names of their contributors may be used to endorse or promote -# products derived from this software without specific prior written -# permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -# -# 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 up architectures (for windows) and prefixes (for mingw builds) +if(WIN32) + if(MINGW) + include(MinGWSearchPathExtras OPTIONAL) + if(MINGWSEARCH_TARGET_TRIPLE) + set(SDL2_PREFIX ${MINGWSEARCH_TARGET_TRIPLE}) + endif() + endif() + if(CMAKE_SIZEOF_VOID_P EQUAL 8) + set(SDL2_LIB_PATH_SUFFIX lib/x64) + if(NOT MSVC AND NOT SDL2_PREFIX) + set(SDL2_PREFIX x86_64-w64-mingw32) + endif() + else() + set(SDL2_LIB_PATH_SUFFIX lib/x86) + if(NOT MSVC AND NOT SDL2_PREFIX) + set(SDL2_PREFIX i686-w64-mingw32) + endif() + endif() +endif() -FIND_PATH(SDL2_INCLUDE_DIR SDL.h - HINTS - $ENV{SDL2} - PATH_SUFFIXES include/SDL2 include SDL2 - i686-w64-mingw32/include/SDL2 - x86_64-w64-mingw32/include/SDL2 - PATHS - ~/Library/Frameworks - /Library/Frameworks - /usr/local/include/SDL2 - /usr/include/SDL2 - /sw # Fink - /opt/local # DarwinPorts - /opt/csw # Blastwave - /opt -) +if(SDL2_PREFIX) + set(SDL2_ORIGPREFIXPATH ${CMAKE_PREFIX_PATH}) + if(SDL2_ROOT_DIR) + list(APPEND CMAKE_PREFIX_PATH "${SDL2_ROOT_DIR}") + endif() + if(CMAKE_PREFIX_PATH) + foreach(_prefix ${CMAKE_PREFIX_PATH}) + list(APPEND CMAKE_PREFIX_PATH "${_prefix}/${SDL2_PREFIX}") + endforeach() + endif() + if(MINGWSEARCH_PREFIXES) + list(APPEND CMAKE_PREFIX_PATH ${MINGWSEARCH_PREFIXES}) + endif() +endif() -# Lookup the 64 bit libs on x64 -IF(CMAKE_SIZEOF_VOID_P EQUAL 8) - FIND_LIBRARY(SDL2_LIBRARY_TEMP SDL2 +# Invoke pkgconfig for hints +find_package(PkgConfig QUIET) +set(SDL2_INCLUDE_HINTS) +set(SDL2_LIB_HINTS) +if(PKG_CONFIG_FOUND) + pkg_search_module(SDL2PC QUIET sdl2) + if(SDL2PC_INCLUDE_DIRS) + set(SDL2_INCLUDE_HINTS ${SDL2PC_INCLUDE_DIRS}) + endif() + if(SDL2PC_LIBRARY_DIRS) + set(SDL2_LIB_HINTS ${SDL2PC_LIBRARY_DIRS}) + endif() +endif() + +include(FindPackageHandleStandardArgs) + +find_library(SDL2_LIBRARY + NAMES + SDL2 HINTS - $ENV{SDL2} - PATH_SUFFIXES lib64 lib - lib/x64 - x86_64-w64-mingw32/lib + ${SDL2_LIB_HINTS} PATHS - /sw - /opt/local - /opt/csw - /opt - ) -# On 32bit build find the 32bit libs -ELSE(CMAKE_SIZEOF_VOID_P EQUAL 8) - FIND_LIBRARY(SDL2_LIBRARY_TEMP SDL2 + ${SDL2_ROOT_DIR} + ENV SDL2DIR + PATH_SUFFIXES lib SDL2 ${SDL2_LIB_PATH_SUFFIX}) + +set(_sdl2_framework FALSE) +# Some special-casing if we've found/been given a framework. +# Handles whether we're given the library inside the framework or the framework itself. +if(APPLE AND "${SDL2_LIBRARY}" MATCHES "(/[^/]+)*.framework(/.*)?$") + set(_sdl2_framework TRUE) + set(SDL2_FRAMEWORK "${SDL2_LIBRARY}") + # Move up in the directory tree as required to get the framework directory. + while("${SDL2_FRAMEWORK}" MATCHES "(/[^/]+)*.framework(/.*)$" AND NOT "${SDL2_FRAMEWORK}" MATCHES "(/[^/]+)*.framework$") + get_filename_component(SDL2_FRAMEWORK "${SDL2_FRAMEWORK}" DIRECTORY) + endwhile() + if("${SDL2_FRAMEWORK}" MATCHES "(/[^/]+)*.framework$") + set(SDL2_FRAMEWORK_NAME ${CMAKE_MATCH_1}) + # If we found a framework, do a search for the header ahead of time that will be more likely to get the framework header. + find_path(SDL2_INCLUDE_DIR + NAMES + SDL_haptic.h # this file was introduced with SDL2 + HINTS + "${SDL2_FRAMEWORK}/Headers/") + else() + # For some reason we couldn't get the framework directory itself. + # Shouldn't happen, but might if something is weird. + unset(SDL2_FRAMEWORK) + endif() +endif() + +find_path(SDL2_INCLUDE_DIR + NAMES + SDL_haptic.h # this file was introduced with SDL2 HINTS - $ENV{SDL2} - PATH_SUFFIXES lib - lib/x86 - i686-w64-mingw32/lib + ${SDL2_INCLUDE_HINTS} PATHS - /sw - /opt/local - /opt/csw - /opt - ) -ENDIF(CMAKE_SIZEOF_VOID_P EQUAL 8) + ${SDL2_ROOT_DIR} + ENV SDL2DIR + PATH_SUFFIXES include include/sdl2 include/SDL2 SDL2) -IF(NOT SDL2_BUILDING_LIBRARY) - IF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework") - # Non-OS X framework versions expect you to also dynamically link to - # SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms - # seem to provide SDL2main for compatibility even though they don't - # necessarily need it. - # Lookup the 64 bit libs on x64 - IF(CMAKE_SIZEOF_VOID_P EQUAL 8) - FIND_LIBRARY(SDL2MAIN_LIBRARY - NAMES SDL2main - HINTS - $ENV{SDL2} - PATH_SUFFIXES lib64 lib - lib/x64 - x86_64-w64-mingw32/lib - PATHS - /sw - /opt/local - /opt/csw - /opt - ) - # On 32bit build find the 32bit libs - ELSE(CMAKE_SIZEOF_VOID_P EQUAL 8) - FIND_LIBRARY(SDL2MAIN_LIBRARY - NAMES SDL2main - HINTS - $ENV{SDL2} - PATH_SUFFIXES lib - lib/x86 - i686-w64-mingw32/lib - PATHS - /sw - /opt/local - /opt/csw - /opt - ) - ENDIF(CMAKE_SIZEOF_VOID_P EQUAL 8) - ENDIF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework") -ENDIF(NOT SDL2_BUILDING_LIBRARY) +if(WIN32 AND SDL2_LIBRARY) + find_file(SDL2_RUNTIME_LIBRARY + NAMES + SDL2.dll + libSDL2.dll + HINTS + ${SDL2_LIB_HINTS} + PATHS + ${SDL2_ROOT_DIR} + ENV SDL2DIR + PATH_SUFFIXES bin lib ${SDL2_LIB_PATH_SUFFIX}) +endif() -# SDL2 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 -lSDL2main -lSDL2 -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(WIN32 OR ANDROID OR IOS OR (APPLE AND NOT _sdl2_framework)) + set(SDL2_EXTRA_REQUIRED SDL2_SDLMAIN_LIBRARY) + find_library(SDL2_SDLMAIN_LIBRARY + NAMES + SDL2main + PATHS + ${SDL2_ROOT_DIR} + ENV SDL2DIR + PATH_SUFFIXES lib ${SDL2_LIB_PATH_SUFFIX}) +endif() -SET(SDL2_FOUND "NO") - IF(SDL2_LIBRARY_TEMP) - # For SDL2main - IF(NOT SDL2_BUILDING_LIBRARY) - IF(SDL2MAIN_LIBRARY) - SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP}) - ENDIF(SDL2MAIN_LIBRARY) - ENDIF(NOT SDL2_BUILDING_LIBRARY) +if(MINGW AND NOT SDL2PC_FOUND) + find_library(SDL2_MINGW_LIBRARY mingw32) + find_library(SDL2_MWINDOWS_LIBRARY mwindows) +endif() - # For OS X, SDL2 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_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa") - ENDIF(APPLE) +if(SDL2_PREFIX) + # Restore things the way they used to be. + set(CMAKE_PREFIX_PATH ${SDL2_ORIGPREFIXPATH}) +endif() - # 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_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT}) - ENDIF(NOT APPLE) +# handle the QUIETLY and REQUIRED arguments and set QUATLIB_FOUND to TRUE if +# all listed variables are TRUE +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(SDL2 + DEFAULT_MSG + SDL2_LIBRARY + SDL2_INCLUDE_DIR + ${SDL2_EXTRA_REQUIRED}) - # For MinGW library - IF(MINGW) - SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP}) - ENDIF(MINGW) +if(SDL2_FOUND) + if(NOT TARGET SDL2::SDL2) + # Create SDL2::SDL2 + if(WIN32 AND SDL2_RUNTIME_LIBRARY) + set(SDL2_DYNAMIC TRUE) + add_library(SDL2::SDL2 SHARED IMPORTED) + set_target_properties(SDL2::SDL2 + PROPERTIES + IMPORTED_IMPLIB "${SDL2_LIBRARY}" + IMPORTED_LOCATION "${SDL2_RUNTIME_LIBRARY}" + INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}" + ) + else() + add_library(SDL2::SDL2 UNKNOWN IMPORTED) + if(SDL2_FRAMEWORK AND SDL2_FRAMEWORK_NAME) + # Handle the case that SDL2 is a framework and we were able to decompose it above. + set_target_properties(SDL2::SDL2 PROPERTIES + IMPORTED_LOCATION "${SDL2_FRAMEWORK}/${SDL2_FRAMEWORK_NAME}") + elseif(_sdl2_framework AND SDL2_LIBRARY MATCHES "(/[^/]+)*.framework$") + # Handle the case that SDL2 is a framework and SDL_LIBRARY is just the framework itself. - # Set the final string here so the GUI reflects the final state. - SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found") - # Set the temp variable to INTERNAL so it is not seen in the CMake GUI - SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "") + # This takes the basename of the framework, without the extension, + # and sets it (as a child of the framework) as the imported location for the target. + # This is the library symlink inside of the framework. + set_target_properties(SDL2::SDL2 PROPERTIES + IMPORTED_LOCATION "${SDL2_LIBRARY}/${CMAKE_MATCH_1}") + else() + # Handle non-frameworks (including non-Mac), as well as the case that we're given the library inside of the framework + set_target_properties(SDL2::SDL2 PROPERTIES + IMPORTED_LOCATION "${SDL2_LIBRARY}") + endif() + set_target_properties(SDL2::SDL2 + PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}" + ) + endif() - SET(SDL2_FOUND "YES") -ENDIF(SDL2_LIBRARY_TEMP) + if(APPLE) + # Need Cocoa here, is always a framework + find_library(SDL2_COCOA_LIBRARY Cocoa) + list(APPEND SDL2_EXTRA_REQUIRED SDL2_COCOA_LIBRARY) + if(SDL2_COCOA_LIBRARY) + set_target_properties(SDL2::SDL2 PROPERTIES + IMPORTED_LINK_INTERFACE_LIBRARIES ${SDL2_COCOA_LIBRARY}) + endif() + endif() -INCLUDE(FindPackageHandleStandardArgs) -FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR) + # Compute what to do with SDL2main + set(SDL2MAIN_LIBRARIES SDL2::SDL2) + add_library(SDL2::SDL2main INTERFACE IMPORTED) + if(SDL2_SDLMAIN_LIBRARY) + add_library(SDL2::SDL2main_real STATIC IMPORTED) + set_target_properties(SDL2::SDL2main_real + PROPERTIES + IMPORTED_LOCATION "${SDL2_SDLMAIN_LIBRARY}") + set(SDL2MAIN_LIBRARIES SDL2::SDL2main_real ${SDL2MAIN_LIBRARIES}) + endif() + if(MINGW) + # MinGW requires some additional libraries to appear earlier in the link line. + if(SDL2PC_LIBRARIES) + # Use pkgconfig-suggested extra libraries if available. + list(REMOVE_ITEM SDL2PC_LIBRARIES SDL2main SDL2) + set(SDL2MAIN_LIBRARIES ${SDL2PC_LIBRARIES} ${SDL2MAIN_LIBRARIES}) + else() + # fall back to extra libraries specified in pkg-config in + # an official binary distro of SDL2 for MinGW I downloaded + if(SDL2_MINGW_LIBRARY) + set(SDL2MAIN_LIBRARIES ${SDL2_MINGW_LIBRARY} ${SDL2MAIN_LIBRARIES}) + endif() + if(SDL2_MWINDOWS_LIBRARY) + set(SDL2MAIN_LIBRARIES ${SDL2_MWINDOWS_LIBRARY} ${SDL2MAIN_LIBRARIES}) + endif() + endif() + set_target_properties(SDL2::SDL2main + PROPERTIES + INTERFACE_COMPILE_DEFINITIONS "main=SDL_main") + endif() + set_target_properties(SDL2::SDL2main + PROPERTIES + INTERFACE_LINK_LIBRARIES "${SDL2MAIN_LIBRARIES}") + endif() + mark_as_advanced(SDL2_ROOT_DIR) +endif() + +mark_as_advanced(SDL2_LIBRARY + SDL2_RUNTIME_LIBRARY + SDL2_INCLUDE_DIR + SDL2_SDLMAIN_LIBRARY + SDL2_COCOA_LIBRARY + SDL2_MINGW_LIBRARY + SDL2_MWINDOWS_LIBRARY) \ No newline at end of file