Index: source/lib/external_libraries/libsdl.h
===================================================================
--- source/lib/external_libraries/libsdl.h
+++ source/lib/external_libraries/libsdl.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2015 Wildfire Games.
+/* Copyright (C) 2020 Wildfire Games.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -53,4 +53,6 @@
 	SDL_Event ev;
 };
 
+const char* GetSDLPlatform(SDL_Window* window);
+
 #endif // INCLUDED_SDL
Index: source/lib/external_libraries/libsdl.cpp
===================================================================
--- /dev/null
+++ source/lib/external_libraries/libsdl.cpp
@@ -0,0 +1,72 @@
+/* Copyright (C) 2020 Wildfire Games.
+ * This file is part of 0 A.D.
+ *
+ * 0 A.D. is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 0 A.D. is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "precompiled.h"
+
+#include "SDL_syswm.h"
+
+const char* GetSDLPlatform(SDL_Window* window)
+{
+	SDL_SysWMinfo wminfo;
+	SDL_VERSION(&wminfo.version);
+
+	if (!SDL_GetWindowWMInfo(window, &wminfo))
+	{
+		LOGERROR("Failed to query SDL2 WM info: %s", SDL_GetError());
+		return NULL;
+	}
+
+	switch (wminfo.subsystem)
+	{
+	case SDL_SYSWM_WAYLAND:
+		return "Wayland";
+	case SDL_SYSWM_X11:
+		return "X11";
+	case SDL_SYSWM_WINDOWS:
+		return "Windows";
+	case SDL_SYSWM_COCOA:
+		return "Cocoa";
+	case SDL_SYSWM_UIKIT:
+		return "UIKit";
+	case SDL_SYSWM_DIRECTFB:
+		return "DirectFB";
+	case SDL_SYSWM_MIR:
+		return "Mir";
+#if SDL_VERSION_ATLEAST(2, 0, 3)
+	case SDL_SYSWM_WINRT:
+		return "WinRT";
+#endif
+#if SDL_VERSION_ATLEAST(2, 0, 4)
+	case SDL_SYSWM_ANDROID:
+		return "Android";
+#endif
+#if SDL_VERSION_ATLEAST(2, 0, 5)
+	case SDL_SYSWM_VIVANTE:
+		return "Vivante";
+#endif
+#if SDL_VERSION_ATLEAST(2, 0, 6)
+	case SDL_SYSWM_OS2:
+		return "OS/2";
+#endif
+#if SDL_VERSION_ATLEAST(2, 0, 11)
+	default:
+		LOGWARNING("Unknown platform, please add it to source/ps/GameSetup/HWDetect.cpp");
+#endif
+	case SDL_SYSWM_UNKNOWN:
+		return "unknown";
+	}
+}
Index: source/ps/GameSetup/HWDetect.cpp
===================================================================
--- source/ps/GameSetup/HWDetect.cpp
+++ source/ps/GameSetup/HWDetect.cpp
@@ -47,7 +47,7 @@
 // TODO: Support OpenGL platforms which don’t use GLX as well.
 #if defined(SDL_VIDEO_DRIVER_X11) && !CONFIG2_GLES
 #include <GL/glx.h>
-#include "SDL_syswm.h"
+#include <SDL_syswm.h>
 
 // Define the GLX_MESA_query_renderer macros if built with
 // an old Mesa (<10.0) that doesn't provide them
@@ -69,6 +69,7 @@
 
 #endif
 
+static void ReportSDL(const ScriptInterface& scriptInterface, JS::HandleValue settings);
 static void ReportGLLimits(const ScriptInterface& scriptInterface, JS::HandleValue settings);
 
 #if ARCH_X86_X64
@@ -285,6 +286,8 @@
 	scriptInterface.SetProperty(settings, "snd_card", snd_card);
 	scriptInterface.SetProperty(settings, "snd_drv_ver", snd_drv_ver);
 
+	ReportSDL(scriptInterface, settings);
+
 	ReportGLLimits(scriptInterface, settings);
 
 	scriptInterface.SetProperty(settings, "video_desktop_xres", g_VideoMode.GetDesktopXRes());
@@ -353,7 +356,7 @@
 	scriptInterface.SetProperty(settings, "timer_resolution", timer_Resolution());
 	
 	// The version should be increased for every meaningful change.
-	const int reportVersion = 12;
+	const int reportVersion = 13;
 
 	// Send the same data to the reporting system
 	g_UserReporter.SubmitReport(
@@ -367,6 +370,23 @@
 	scriptInterface.CallFunctionVoid(global, "RunHardwareDetection", settings);
 }
 
+static void ReportSDL(const ScriptInterface& scriptInterface, JS::HandleValue settings)
+{
+	SDL_version build, runtime;
+	SDL_VERSION(&build);
+
+	char version[16];
+	snprintf(version, ARRAY_SIZE(version), "%d.%d.%d", build.major, build.minor, build.patch);
+	scriptInterface.SetProperty(settings, "sdl2_build_version", version);
+
+	SDL_GetVersion(&runtime);
+	snprintf(version, ARRAY_SIZE(version), "%d.%d.%d", runtime.major, runtime.minor, runtime.patch);
+	scriptInterface.SetProperty(settings, "sdl2_runtime_version", version);
+
+	const char* backend = GetSDLPlatform(g_VideoMode.GetWindow());
+	scriptInterface.SetProperty(settings, "sdl2_video_backend", backend ? backend : "unknown");
+}
+
 static void ReportGLLimits(const ScriptInterface& scriptInterface, JS::HandleValue settings)
 {
 	const char* errstr = "(error)";