[SDL2] On Win, build and link statically.

Keep using system lib dynamically on Unix.

.appveyor.yml

@@ -48,7 +48,6 @@ after_build:
       IF     "%CONFIGURATION%"=="Checked" SET "ARCHIVE_SWITCHES="-pI know what I am doing." --"
       7z a xenia_%ARCHIVE_SUFFIX%.zip          %ARCHIVE_SWITCHES% LICENSE "%APPVEYOR_BUILD_FOLDER%\build\bin\%PLATFORM%\%CONFIGURATION%\xenia.exe"          "%APPVEYOR_BUILD_FOLDER%\build\bin\%PLATFORM%\%CONFIGURATION%\xenia.pdb"
       7z a xenia-vfs-dump_%ARCHIVE_SUFFIX%.zip %ARCHIVE_SWITCHES% LICENSE "%APPVEYOR_BUILD_FOLDER%\build\bin\%PLATFORM%\%CONFIGURATION%\xenia-vfs-dump.exe" "%APPVEYOR_BUILD_FOLDER%\build\bin\%PLATFORM%\%CONFIGURATION%\xenia-vfs-dump.pdb"
-      7z a SDL2.zip                            %ARCHIVE_SWITCHES% "%APPVEYOR_BUILD_FOLDER%\build\bin\%PLATFORM%\%CONFIGURATION%\SDL2.dll"
 
 before_test:
   - cmd: xb gentests

.gitmodules

@@ -49,9 +49,9 @@
 [submodule "third_party/cxxopts"]
 	path = third_party/cxxopts
 	url = https://github.com/jarro2783/cxxopts.git
-[submodule "third_party/SDL2-devel-VC"]
-	path = third_party/SDL2-devel-VC
-	url = https://github.com/xenia-project/SDL2-devel-VC.git
+[submodule "third_party/SDL2"]
+	path = third_party/SDL2
+	url = https://github.com/spurious/SDL-mirror.git
 [submodule "third_party/utfcpp"]
 	path = third_party/utfcpp
 	url = https://github.com/xenia-project/utfcpp.git

premake5.lua

@@ -223,6 +223,7 @@ solution("xenia")
   include("third_party/imgui.lua")
   include("third_party/libav.lua")
   include("third_party/mspack.lua")
+  include("third_party/SDL2.lua")
   include("third_party/snappy.lua")
   include("third_party/spirv-tools.lua")
   include("third_party/volk.lua")

src/xenia/app/premake5.lua

@@ -79,7 +79,6 @@ project("xenia-app")
 
   filter("platforms:Windows")
     links({
-      "delayimp", -- This library implements delayed loading on Windows, an MSVC exclusive feature.
       "xenia-apu-xaudio2",
       "xenia-gpu-d3d12",
       "xenia-hid-winkey",
@@ -87,11 +86,6 @@ project("xenia-app")
       "xenia-ui-d3d12",
     })
 
-  filter("platforms:Windows")
-    linkoptions({
-      "/DELAYLOAD:SDL2.dll",  -- SDL is not mandatory on Windows, implementations using native APIs are prefered.
-    })
-
   filter("platforms:Windows")
     -- Only create the .user file if it doesn't already exist.
     local user_file = project_root.."/build/xenia-app.vcxproj.user"

src/xenia/apu/sdl/premake5.lua

@@ -14,16 +14,4 @@ project("xenia-apu-sdl")
   defines({
   })
   local_platform_files()
-
-  filter("platforms:Windows")
-    -- On linux we build against the system version (libsdl2-dev)
-    includedirs({
-      project_root.."/third_party/SDL2-devel-VC/include/",
-    })
-    libdirs({
-      project_root.."/third_party/SDL2-devel-VC/lib/x64/",
-    })
-    -- Copy the dll to the output folder
-    postbuildcommands({
-      "{COPY} %{prj.basedir}/"..project_root.."/third_party/SDL2-devel-VC/lib/x64/SDL2.dll %{cfg.targetdir}",
-    })
+  sdl2_include()

src/xenia/apu/sdl/sdl_audio_driver.h

@@ -9,12 +9,12 @@
 
 #ifndef XENIA_APU_SDL_SDL_AUDIO_DRIVER_H_
 #define XENIA_APU_SDL_SDL_AUDIO_DRIVER_H_
-#include <SDL2/SDL.h>
 
 #include <mutex>
 #include <queue>
 #include <stack>
 
+#include "SDL.h"
 #include "xenia/apu/audio_driver.h"
 #include "xenia/base/threading.h"
 

src/xenia/hid/sdl/premake5.lua

@@ -15,16 +15,4 @@ project("xenia-hid-sdl")
   defines({
   })
   local_platform_files()
-
-  filter("platforms:Windows")
-    -- On linux we build against the system version (libsdl2-dev)
-    includedirs({
-      project_root.."/third_party/SDL2-devel-VC/include/",
-    })
-    libdirs({
-      project_root.."/third_party/SDL2-devel-VC/lib/x64/",
-    })
-    -- Copy the dll to the output folder
-    postbuildcommands({
-      "{COPY} %{prj.basedir}/"..project_root.."/third_party/SDL2-devel-VC/lib/x64/SDL2.dll %{cfg.targetdir}",
-    })
+  sdl2_include()

src/xenia/hid/sdl/sdl_input_driver.h

@@ -10,12 +10,11 @@
 #ifndef XENIA_HID_SDL_SDL_INPUT_DRIVER_H_
 #define XENIA_HID_SDL_SDL_INPUT_DRIVER_H_
 
-#include <SDL2/SDL.h>
-
 #include <array>
 #include <atomic>
 #include <mutex>
 
+#include "SDL.h"
 #include "xenia/hid/input_driver.h"
 
 #define HID_SDL_USER_COUNT (4)

third_party/SDL2

@@ -0,0 +1 @@
+Subproject commit 863c4bd26b51892864c6042ad2db474e11b08fed

third_party/SDL2-devel-VC

@@ -1 +0,0 @@
-Subproject commit f102d8b36395200682108e88bec54bf9acd1004a

third_party/SDL2-static.lua

@@ -0,0 +1,346 @@
+-- This project resembles the build configuration on Windows only.
+group("third_party")
+project("SDL2")
+  uuid("65878768-95A1-4E7B-8DFB-B23A09E0DE7C")
+  kind("StaticLib")
+  language("C")
+
+  defines({
+    "HAVE_LIBC",
+  })
+  links({
+    "setupapi.lib",
+    "winmm.lib",
+    "imm32.lib",
+    "version.lib",
+  })
+  includedirs({
+    "SDL2/include",
+  })
+  buildoptions({
+    "/wd4828",  -- illegal characters in file
+  })
+  files({
+    -- 1:1 from SDL.vcxproj file
+
+    "SDL2/include/begin_code.h",
+    "SDL2/include/close_code.h",
+    "SDL2/include/SDL.h",
+    "SDL2/include/SDL_assert.h",
+    "SDL2/include/SDL_atomic.h",
+    "SDL2/include/SDL_audio.h",
+    "SDL2/include/SDL_bits.h",
+    "SDL2/include/SDL_blendmode.h",
+    "SDL2/include/SDL_clipboard.h",
+    "SDL2/include/SDL_config.h",
+    "SDL2/include/SDL_config_windows.h",
+    "SDL2/include/SDL_copying.h",
+    "SDL2/include/SDL_cpuinfo.h",
+    "SDL2/include/SDL_egl.h",
+    "SDL2/include/SDL_endian.h",
+    "SDL2/include/SDL_error.h",
+    "SDL2/include/SDL_events.h",
+    "SDL2/include/SDL_filesystem.h",
+    "SDL2/include/SDL_gamecontroller.h",
+    "SDL2/include/SDL_gesture.h",
+    "SDL2/include/SDL_haptic.h",
+    "SDL2/include/SDL_hints.h",
+    "SDL2/include/SDL_joystick.h",
+    "SDL2/include/SDL_keyboard.h",
+    "SDL2/include/SDL_keycode.h",
+    "SDL2/include/SDL_loadso.h",
+    "SDL2/include/SDL_log.h",
+    "SDL2/include/SDL_main.h",
+    "SDL2/include/SDL_messagebox.h",
+    "SDL2/include/SDL_mouse.h",
+    "SDL2/include/SDL_mutex.h",
+    "SDL2/include/SDL_name.h",
+    "SDL2/include/SDL_opengl.h",
+    "SDL2/include/SDL_opengl_glext.h",
+    "SDL2/include/SDL_opengles.h",
+    "SDL2/include/SDL_opengles2.h",
+    "SDL2/include/SDL_opengles2_gl2.h",
+    "SDL2/include/SDL_opengles2_gl2ext.h",
+    "SDL2/include/SDL_opengles2_gl2platform.h",
+    "SDL2/include/SDL_opengles2_khrplatform.h",
+    "SDL2/include/SDL_pixels.h",
+    "SDL2/include/SDL_platform.h",
+    "SDL2/include/SDL_power.h",
+    "SDL2/include/SDL_quit.h",
+    "SDL2/include/SDL_rect.h",
+    "SDL2/include/SDL_render.h",
+    "SDL2/include/SDL_revision.h",
+    "SDL2/include/SDL_rwops.h",
+    "SDL2/include/SDL_scancode.h",
+    "SDL2/include/SDL_sensor.h",
+    "SDL2/include/SDL_shape.h",
+    "SDL2/include/SDL_stdinc.h",
+    "SDL2/include/SDL_surface.h",
+    "SDL2/include/SDL_system.h",
+    "SDL2/include/SDL_syswm.h",
+    "SDL2/include/SDL_test.h",
+    "SDL2/include/SDL_test_assert.h",
+    "SDL2/include/SDL_test_common.h",
+    "SDL2/include/SDL_test_compare.h",
+    "SDL2/include/SDL_test_crc32.h",
+    "SDL2/include/SDL_test_font.h",
+    "SDL2/include/SDL_test_fuzzer.h",
+    "SDL2/include/SDL_test_harness.h",
+    "SDL2/include/SDL_test_images.h",
+    "SDL2/include/SDL_test_log.h",
+    "SDL2/include/SDL_test_md5.h",
+    "SDL2/include/SDL_test_random.h",
+    "SDL2/include/SDL_thread.h",
+    "SDL2/include/SDL_timer.h",
+    "SDL2/include/SDL_touch.h",
+    "SDL2/include/SDL_types.h",
+    "SDL2/include/SDL_version.h",
+    "SDL2/include/SDL_video.h",
+    "SDL2/include/SDL_vulkan.h",
+    "SDL2/src/audio/directsound/SDL_directsound.h",
+    "SDL2/src/audio/disk/SDL_diskaudio.h",
+    "SDL2/src/audio/dummy/SDL_dummyaudio.h",
+    "SDL2/src/audio/SDL_audio_c.h",
+    "SDL2/src/audio/SDL_audiodev_c.h",
+    "SDL2/src/audio/SDL_sysaudio.h",
+    "SDL2/src/audio/SDL_wave.h",
+    "SDL2/src/audio/wasapi/SDL_wasapi.h",
+    "SDL2/src/audio/winmm/SDL_winmm.h",
+    "SDL2/src/core/windows/SDL_directx.h",
+    "SDL2/src/core/windows/SDL_windows.h",
+    "SDL2/src/core/windows/SDL_xinput.h",
+    "SDL2/src/dynapi/SDL_dynapi.h",
+    "SDL2/src/dynapi/SDL_dynapi_overrides.h",
+    "SDL2/src/dynapi/SDL_dynapi_procs.h",
+    "SDL2/src/events/blank_cursor.h",
+    "SDL2/src/events/default_cursor.h",
+    "SDL2/src/events/SDL_clipboardevents_c.h",
+    "SDL2/src/events/SDL_displayevents_c.h",
+    "SDL2/src/events/SDL_dropevents_c.h",
+    "SDL2/src/events/SDL_events_c.h",
+    "SDL2/src/events/SDL_gesture_c.h",
+    "SDL2/src/events/SDL_keyboard_c.h",
+    "SDL2/src/events/SDL_mouse_c.h",
+    "SDL2/src/events/SDL_sysevents.h",
+    "SDL2/src/events/SDL_touch_c.h",
+    "SDL2/src/events/SDL_windowevents_c.h",
+    "SDL2/src/haptic/SDL_syshaptic.h",
+    "SDL2/src/haptic/windows/SDL_dinputhaptic_c.h",
+    "SDL2/src/haptic/windows/SDL_windowshaptic_c.h",
+    "SDL2/src/haptic/windows/SDL_xinputhaptic_c.h",
+    "SDL2/src/joystick/controller_type.h",
+    "SDL2/src/joystick/hidapi/SDL_hidapijoystick_c.h",
+    "SDL2/src/joystick/SDL_joystick_c.h",
+    "SDL2/src/joystick/SDL_sysjoystick.h",
+    "SDL2/src/joystick/windows/SDL_dinputjoystick_c.h",
+    "SDL2/src/joystick/windows/SDL_windowsjoystick_c.h",
+    "SDL2/src/joystick/windows/SDL_xinputjoystick_c.h",
+    "SDL2/src/libm/math_libm.h",
+    "SDL2/src/libm/math_private.h",
+    "SDL2/src/render/direct3d11/SDL_shaders_d3d11.h",
+    "SDL2/src/render/direct3d/SDL_shaders_d3d.h",
+    "SDL2/src/render/opengl/SDL_glfuncs.h",
+    "SDL2/src/render/opengl/SDL_shaders_gl.h",
+    "SDL2/src/render/opengles/SDL_glesfuncs.h",
+    "SDL2/src/render/SDL_d3dmath.h",
+    "SDL2/src/render/SDL_sysrender.h",
+    "SDL2/src/render/SDL_yuv_sw_c.h",
+    "SDL2/src/render/software/SDL_blendfillrect.h",
+    "SDL2/src/render/software/SDL_blendline.h",
+    "SDL2/src/render/software/SDL_blendpoint.h",
+    "SDL2/src/render/software/SDL_draw.h",
+    "SDL2/src/render/software/SDL_drawline.h",
+    "SDL2/src/render/software/SDL_drawpoint.h",
+    "SDL2/src/render/software/SDL_render_sw_c.h",
+    "SDL2/src/render/software/SDL_rotate.h",
+    "SDL2/src/SDL_dataqueue.h",
+    "SDL2/src/SDL_error_c.h",
+    "SDL2/src/sensor/dummy/SDL_dummysensor.h",
+    "SDL2/src/sensor/SDL_sensor_c.h",
+    "SDL2/src/sensor/SDL_syssensor.h",
+    "SDL2/src/thread/SDL_systhread.h",
+    "SDL2/src/thread/SDL_thread_c.h",
+    "SDL2/src/thread/windows/SDL_systhread_c.h",
+    "SDL2/src/timer/SDL_timer_c.h",
+    "SDL2/src/video/dummy/SDL_nullevents_c.h",
+    "SDL2/src/video/dummy/SDL_nullframebuffer_c.h",
+    "SDL2/src/video/dummy/SDL_nullvideo.h",
+    "SDL2/src/video/SDL_blit.h",
+    "SDL2/src/video/SDL_blit_auto.h",
+    "SDL2/src/video/SDL_blit_copy.h",
+    "SDL2/src/video/SDL_blit_slow.h",
+    "SDL2/src/video/SDL_pixels_c.h",
+    "SDL2/src/video/SDL_rect_c.h",
+    "SDL2/src/video/SDL_RLEaccel_c.h",
+    "SDL2/src/video/SDL_shape_internals.h",
+    "SDL2/src/video/SDL_sysvideo.h",
+    "SDL2/src/video/SDL_vulkan_internal.h",
+    "SDL2/src/video/SDL_yuv_c.h",
+    "SDL2/src/video/windows/SDL_vkeys.h",
+    "SDL2/src/video/windows/SDL_windowsclipboard.h",
+    "SDL2/src/video/windows/SDL_windowsevents.h",
+    "SDL2/src/video/windows/SDL_windowsframebuffer.h",
+    "SDL2/src/video/windows/SDL_windowskeyboard.h",
+    "SDL2/src/video/windows/SDL_windowsmessagebox.h",
+    "SDL2/src/video/windows/SDL_windowsmodes.h",
+    "SDL2/src/video/windows/SDL_windowsmouse.h",
+    "SDL2/src/video/windows/SDL_windowsopengl.h",
+    "SDL2/src/video/windows/SDL_windowsshape.h",
+    "SDL2/src/video/windows/SDL_windowsvideo.h",
+    "SDL2/src/video/windows/SDL_windowsvulkan.h",
+    "SDL2/src/video/windows/SDL_windowswindow.h",
+    "SDL2/src/video/windows/wmmsg.h",
+    "SDL2/src/video/yuv2rgb/yuv_rgb.h",
+
+    "SDL2/src/atomic/SDL_atomic.c",
+    "SDL2/src/atomic/SDL_spinlock.c",
+    "SDL2/src/audio/directsound/SDL_directsound.c",
+    "SDL2/src/audio/disk/SDL_diskaudio.c",
+    "SDL2/src/audio/dummy/SDL_dummyaudio.c",
+    "SDL2/src/audio/SDL_audio.c",
+    "SDL2/src/audio/SDL_audiocvt.c",
+    "SDL2/src/audio/SDL_audiodev.c",
+    "SDL2/src/audio/SDL_audiotypecvt.c",
+    "SDL2/src/audio/SDL_mixer.c",
+    "SDL2/src/audio/SDL_wave.c",
+    "SDL2/src/audio/winmm/SDL_winmm.c",
+    "SDL2/src/audio/wasapi/SDL_wasapi.c",
+    "SDL2/src/audio/wasapi/SDL_wasapi_win32.c",
+    "SDL2/src/core/windows/SDL_windows.c",
+    "SDL2/src/core/windows/SDL_xinput.c",
+    "SDL2/src/cpuinfo/SDL_cpuinfo.c",
+    "SDL2/src/dynapi/SDL_dynapi.c",
+    "SDL2/src/events/SDL_clipboardevents.c",
+    "SDL2/src/events/SDL_displayevents.c",
+    "SDL2/src/events/SDL_dropevents.c",
+    "SDL2/src/events/SDL_events.c",
+    "SDL2/src/events/SDL_gesture.c",
+    "SDL2/src/events/SDL_keyboard.c",
+    "SDL2/src/events/SDL_mouse.c",
+    "SDL2/src/events/SDL_quit.c",
+    "SDL2/src/events/SDL_touch.c",
+    "SDL2/src/events/SDL_windowevents.c",
+    "SDL2/src/file/SDL_rwops.c",
+    "SDL2/src/filesystem/windows/SDL_sysfilesystem.c",
+    "SDL2/src/haptic/SDL_haptic.c",
+    "SDL2/src/haptic/windows/SDL_dinputhaptic.c",
+    "SDL2/src/haptic/windows/SDL_windowshaptic.c",
+    "SDL2/src/haptic/windows/SDL_xinputhaptic.c",
+    "SDL2/src/hidapi/windows/hid.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapijoystick.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_gamecube.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_ps4.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_rumble.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_switch.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_xbox360.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_xbox360w.c",
+    "SDL2/src/joystick/hidapi/SDL_hidapi_xboxone.c",
+    "SDL2/src/joystick/SDL_gamecontroller.c",
+    "SDL2/src/joystick/SDL_joystick.c",
+    "SDL2/src/joystick/windows/SDL_dinputjoystick.c",
+    "SDL2/src/joystick/windows/SDL_mmjoystick.c",
+    "SDL2/src/joystick/windows/SDL_windowsjoystick.c",
+    "SDL2/src/joystick/windows/SDL_xinputjoystick.c",
+    "SDL2/src/libm/e_atan2.c",
+    "SDL2/src/libm/e_exp.c",
+    "SDL2/src/libm/e_fmod.c",
+    "SDL2/src/libm/e_log.c",
+    "SDL2/src/libm/e_log10.c",
+    "SDL2/src/libm/e_pow.c",
+    "SDL2/src/libm/e_rem_pio2.c",
+    "SDL2/src/libm/e_sqrt.c",
+    "SDL2/src/libm/k_cos.c",
+    "SDL2/src/libm/k_rem_pio2.c",
+    "SDL2/src/libm/k_sin.c",
+    "SDL2/src/libm/k_tan.c",
+    "SDL2/src/libm/s_atan.c",
+    "SDL2/src/libm/s_copysign.c",
+    "SDL2/src/libm/s_cos.c",
+    "SDL2/src/libm/s_fabs.c",
+    "SDL2/src/libm/s_floor.c",
+    "SDL2/src/libm/s_scalbn.c",
+    "SDL2/src/libm/s_sin.c",
+    "SDL2/src/libm/s_tan.c",
+    "SDL2/src/loadso/windows/SDL_sysloadso.c",
+    "SDL2/src/power/SDL_power.c",
+    "SDL2/src/power/windows/SDL_syspower.c",
+    "SDL2/src/render/direct3d11/SDL_shaders_d3d11.c",
+    "SDL2/src/render/direct3d/SDL_render_d3d.c",
+    "SDL2/src/render/direct3d11/SDL_render_d3d11.c",
+    "SDL2/src/render/direct3d/SDL_shaders_d3d.c",
+    "SDL2/src/render/opengl/SDL_render_gl.c",
+    "SDL2/src/render/opengl/SDL_shaders_gl.c",
+    "SDL2/src/render/opengles2/SDL_render_gles2.c",
+    "SDL2/src/render/opengles2/SDL_shaders_gles2.c",
+    "SDL2/src/render/SDL_d3dmath.c",
+    "SDL2/src/render/SDL_render.c",
+    "SDL2/src/render/SDL_yuv_sw.c",
+    "SDL2/src/render/software/SDL_blendfillrect.c",
+    "SDL2/src/render/software/SDL_blendline.c",
+    "SDL2/src/render/software/SDL_blendpoint.c",
+    "SDL2/src/render/software/SDL_drawline.c",
+    "SDL2/src/render/software/SDL_drawpoint.c",
+    "SDL2/src/render/software/SDL_render_sw.c",
+    "SDL2/src/render/software/SDL_rotate.c",
+    "SDL2/src/SDL.c",
+    "SDL2/src/SDL_assert.c",
+    "SDL2/src/SDL_dataqueue.c",
+    "SDL2/src/SDL_error.c",
+    "SDL2/src/SDL_hints.c",
+    "SDL2/src/SDL_log.c",
+    "SDL2/src/sensor/dummy/SDL_dummysensor.c",
+    "SDL2/src/sensor/SDL_sensor.c",
+    "SDL2/src/stdlib/SDL_getenv.c",
+    "SDL2/src/stdlib/SDL_iconv.c",
+    "SDL2/src/stdlib/SDL_malloc.c",
+    "SDL2/src/stdlib/SDL_qsort.c",
+    "SDL2/src/stdlib/SDL_stdlib.c",
+    "SDL2/src/stdlib/SDL_string.c",
+    "SDL2/src/stdlib/SDL_strtokr.c",
+    "SDL2/src/thread/generic/SDL_syscond.c",
+    "SDL2/src/thread/SDL_thread.c",
+    "SDL2/src/thread/windows/SDL_sysmutex.c",
+    "SDL2/src/thread/windows/SDL_syssem.c",
+    "SDL2/src/thread/windows/SDL_systhread.c",
+    "SDL2/src/thread/windows/SDL_systls.c",
+    "SDL2/src/timer/SDL_timer.c",
+    "SDL2/src/timer/windows/SDL_systimer.c",
+    "SDL2/src/video/dummy/SDL_nullevents.c",
+    "SDL2/src/video/dummy/SDL_nullframebuffer.c",
+    "SDL2/src/video/dummy/SDL_nullvideo.c",
+    "SDL2/src/video/SDL_blit.c",
+    "SDL2/src/video/SDL_blit_0.c",
+    "SDL2/src/video/SDL_blit_1.c",
+    "SDL2/src/video/SDL_blit_A.c",
+    "SDL2/src/video/SDL_blit_auto.c",
+    "SDL2/src/video/SDL_blit_copy.c",
+    "SDL2/src/video/SDL_blit_N.c",
+    "SDL2/src/video/SDL_blit_slow.c",
+    "SDL2/src/video/SDL_bmp.c",
+    "SDL2/src/video/SDL_clipboard.c",
+    "SDL2/src/video/SDL_egl.c",
+    "SDL2/src/video/SDL_fillrect.c",
+    "SDL2/src/video/SDL_pixels.c",
+    "SDL2/src/video/SDL_rect.c",
+    "SDL2/src/video/SDL_RLEaccel.c",
+    "SDL2/src/video/SDL_shape.c",
+    "SDL2/src/video/SDL_stretch.c",
+    "SDL2/src/video/SDL_surface.c",
+    "SDL2/src/video/SDL_video.c",
+    "SDL2/src/video/SDL_vulkan_utils.c",
+    "SDL2/src/video/SDL_yuv.c",
+    "SDL2/src/video/windows/SDL_windowsclipboard.c",
+    "SDL2/src/video/windows/SDL_windowsevents.c",
+    "SDL2/src/video/windows/SDL_windowsframebuffer.c",
+    "SDL2/src/video/windows/SDL_windowskeyboard.c",
+    "SDL2/src/video/windows/SDL_windowsmessagebox.c",
+    "SDL2/src/video/windows/SDL_windowsmodes.c",
+    "SDL2/src/video/windows/SDL_windowsmouse.c",
+    "SDL2/src/video/windows/SDL_windowsopengl.c",
+    "SDL2/src/video/windows/SDL_windowsopengles.c",
+    "SDL2/src/video/windows/SDL_windowsshape.c",
+    "SDL2/src/video/windows/SDL_windowsvideo.c",
+    "SDL2/src/video/windows/SDL_windowsvulkan.c",
+    "SDL2/src/video/windows/SDL_windowswindow.c",
+    "SDL2/src/video/yuv2rgb/yuv_rgb.c",
+  })

third_party/SDL2.lua

@@ -0,0 +1,36 @@
+--
+-- On Linux we build against the system version (libsdl2-dev for building),
+-- since SDL2 is our robust API there like DirectX is on Windows.
+--
+
+local sdl2_sys_includedirs = {}
+local third_party_path = os.getcwd()
+
+if os.istarget("windows") then
+  -- build ourselves
+  include("SDL2-static.lua")
+else
+  -- use system libraries
+  local result, code, what = os.outputof("sdl2-config --cflags")
+  if result then
+    for inc in string.gmatch(result, "-I([%S]+)") do
+      table.insert(sdl2_sys_includedirs, inc)
+    end
+  else
+    error("Failed to run 'sdl2-config'. Are libsdl2 development files installed?")
+  end
+end
+
+
+--
+-- Call this function in project scope to include the SDL2 headers.
+--
+function sdl2_include()
+  filter("platforms:Windows")
+    includedirs({
+      path.getrelative(".", third_party_path) .. "/SDL2/include",
+    })
+  filter("platforms:Linux")
+    includedirs(sdl2_sys_includedirs)
+  filter({})
+end