Dependencies: Remove GLFW, Add SDL2

citra: Remove GLFW, Add SDL2

FindSDL2: Do not CACHE SDL2_* variables if library is not found

EmuWindow_SDL2: Set minimal client area at initialisation time

EmuWindow_SDL2: Corrections

EmuWindow_SDL2: Fix no decorations on startup on OS X

cmake: windows_copy_files

externals/cmake-modules/FindSDL2.cmake

@@ -0,0 +1,224 @@
+
+# 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
+#
+# This module responds to the the flag:
+# SDL2_BUILDING_LIBRARY
+# If this is defined, then no SDL2main 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.
+#
+# Don't forget to include SDLmain.h and SDLmain.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.
+#
+#
+# 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.
+#
+#
+# $SDL2DIR is an environment variable that would
+# correspond to the ./configure --prefix=$SDL2DIR
+# 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" 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").
+#
+# 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.
+#=============================================================================
+# CMake - Cross Platform Makefile Generator
+# Copyright 2000-2016 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.
+# 
+# ------------------------------------------------------------------------------
+# 
+# The above copyright and license notice applies to distributions of
+# CMake in source and binary form.  Some source files contain additional
+# notices of original copyright by their contributors; see each source
+# for details.  Third-party software packages supplied with CMake under
+# compatible licenses provide their own copyright notices documented in
+# corresponding subdirectories.
+# 
+# ------------------------------------------------------------------------------
+# 
+# CMake was initially developed by Kitware with the following sponsorship:
+# 
+#  * National Library of Medicine at the National Institutes of Health
+#    as part of the Insight Segmentation and Registration Toolkit (ITK).
+# 
+#  * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel
+#    Visualization Initiative.
+# 
+#  * National Alliance for Medical Image Computing (NAMIC) is funded by the
+#    National Institutes of Health through the NIH Roadmap for Medical Research,
+#    Grant U54 EB005149.
+# 
+#  * Kitware, Inc.
+#
+
+message("<FindSDL2.cmake>")
+
+SET(SDL2_SEARCH_PATHS
+    ~/Library/Frameworks
+    /Library/Frameworks
+    /usr/local
+    /usr
+    /sw # Fink
+    /opt/local # DarwinPorts
+    /opt/csw # Blastwave
+    /opt
+    ${SDL2_PATH}
+)
+
+FIND_LIBRARY(SDL2_LIBRARY_TEMP
+    NAMES SDL2
+    HINTS
+    $ENV{SDL2DIR}
+    PATH_SUFFIXES lib64 lib
+    PATHS ${SDL2_SEARCH_PATHS}
+)
+
+IF(SDL2_LIBRARY_TEMP)
+    FIND_PATH(SDL2_INCLUDE_DIR SDL.h
+        HINTS
+        $ENV{SDL2DIR}
+        PATH_SUFFIXES include/SDL2 include
+        PATHS ${SDL2_SEARCH_PATHS}
+    )
+
+    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.
+            FIND_LIBRARY(SDL2MAIN_LIBRARY
+                NAMES SDL2main
+                HINTS
+                $ENV{SDL2DIR}
+                PATH_SUFFIXES lib64 lib
+                PATHS ${SDL2_SEARCH_PATHS}
+            )
+        ENDIF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
+    ENDIF(NOT SDL2_BUILDING_LIBRARY)
+
+    # 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)
+
+    # 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)
+
+    # 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)
+
+    # 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)
+
+    # For MinGW library
+    IF(MINGW)
+        SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP})
+    ENDIF(MINGW)
+
+    # 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")
+
+    # Unset the temp variable to INTERNAL so it is not seen in the CMake GUI
+    UNSET(SDL2_LIBRARY_TEMP)
+ENDIF(SDL2_LIBRARY_TEMP)
+
+message("</FindSDL2.cmake>")
+
+INCLUDE(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)