diff -ru SDL2-2.0.12.orig/configure.ac SDL2-2.0.12/configure.ac

--- SDL2-2.0.12.orig/configure.ac       2020-03-11 02:36:18.000000000 +0100

+++ SDL2-2.0.12/configure.ac    2020-10-07 12:42:16.906014070 +0200

@@ -1332,7 +1332,7 @@

         CFLAGS="$save_CFLAGS"

         if test x$have_arm_simd = xyes; then

-            AC_DEFINE(SDL_ARM_SIMD_BLITTERS)

+            AC_DEFINE([SDL_ARM_SIMD_BLITTERS], [1], [ ])

 dnl            SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-simd*.c"

             SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-simd*.S"

             WARN_ABOUT_ARM_SIMD_ASM_MIT="yes"

@@ -1371,7 +1371,7 @@

         CFLAGS="$save_CFLAGS"

         if test x$have_arm_neon = xyes; then

-            AC_DEFINE(SDL_ARM_NEON_BLITTERS)

+            AC_DEFINE([SDL_ARM_NEON_BLITTERS], [1], [ ])

 dnl            SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-neon*.c"

             SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-neon*.S"

             WARN_ABOUT_ARM_NEON_ASM_MIT="yes"

@@ -1927,7 +1927,7 @@

 XITouchClassInfo *t;

                     ],[

                     have_xinput2_multitouch=yes

-                    AC_DEFINE([SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH], 1, [])

+                    AC_DEFINE([SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH], [1], [ ])

                     SUMMARY_video_x11="${SUMMARY_video_x11} xinput2_multitouch"

                     ])

                 AC_MSG_RESULT($have_xinput2_multitouch)

@@ -3094,11 +3094,11 @@

     AC_CHECK_HEADER(mmdeviceapi.h, have_wasapi=yes)

     if test x$have_wasapi = xyes; then

-        AC_DEFINE(HAVE_MMDEVICEAPI_H,1,[])

+        AC_DEFINE([HAVE_MMDEVICEAPI_H], [1], [ ])

     fi

     AC_CHECK_HEADER(audioclient.h,,have_wasapi=no)

     if test x$have_wasapi = xyes; then

-        AC_DEFINE(HAVE_AUDIOCLIENT_H,1,[])

+        AC_DEFINE([HAVE_AUDIOCLIENT_H], [1], [ ])

     fi

     AC_ARG_ENABLE(wasapi,

diff -ru SDL2-2.0.8.orig/configure.in SDL2-2.0.8/configure.in

--- SDL2-2.0.8.orig/configure.in	2018-03-01 17:34:41.000000000 +0100

+++ SDL2-2.0.8/configure.ac	2020-09-27 15:02:24.837099348 +0200

@@ -2770,6 +2769,10 @@

             pthread_cflags="-D_REENTRANT"

             pthread_lib="-lpthread"

             ;;

+        *-*-midipix*)

+            pthread_cflags="-D_REENTRANT"

+            pthread_lib=""

+            ;;

         *-*-bsdi*)

             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"

             pthread_lib=""

@@ -3484,6 +3487,67 @@

         # Set up other core UNIX files

         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"

         ;;

+    *-*-midipix*)

+        ARCH=midipix

+

+        CheckWINDOWS

+        # TODO: oh dear.

+        #CheckWINDOWSGL

+        #CheckWINDOWSGLES

+        #CheckVulkan

+        CheckDIRECTX

+        CheckVisibilityHidden

+        CheckDeclarationAfterStatement

+        CheckDummyVideo

+        CheckDiskAudio

+        CheckDummyAudio

+        CheckDLOPEN

+        CheckPTHREAD

+        CheckClockGettime

+

+        # Set up files for the video library

+        if test x$enable_video = xyes; then

+            AC_DEFINE(SDL_VIDEO_DRIVER_WINDOWS, 1, [ ])

+            SOURCES="$SOURCES $srcdir/src/video/windows/*.c"

+            have_video=yes

+            AC_ARG_ENABLE(render-d3d,

+AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[default=yes]]]),

+                                , enable_render_d3d=yes)

+            if test x$enable_render_d3d = xyes -a x$have_d3d = xyes; then

+                AC_DEFINE(SDL_VIDEO_RENDER_D3D, 1, [ ])

+            fi

+            if test x$enable_render_d3d = xyes -a x$have_d3d11 = xyes; then

+                AC_DEFINE(SDL_VIDEO_RENDER_D3D11, 1, [ ])

+            fi

+        fi

+

+        # Set up files for the audio library

+        # TODO: wasapi is missing entirely still

+

+        # Set up files for the haptic library

+	# TODO: not sure.

+

+        # Set up files for the power library

+        if test x$enable_power = xyes; then

+            AC_DEFINE(SDL_POWER_WINDOWS, 1, [ ])

+            SOURCES="$SOURCES $srcdir/src/power/windows/*.c"

+            have_power=yes

+        fi

+        # Set up files for the filesystem library

+        if test x$enable_filesystem = xyes; then

+            AC_DEFINE(SDL_FILESYSTEM_UNIX, 1, [ ])

+            SOURCES="$SOURCES $srcdir/src/filesystem/unix/*.c"

+            have_filesystem=yes

+        fi

+        # Set up files for the timer library

+        if test x$enable_timers = xyes; then

+            AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])

+            SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"

+            have_timers=yes

+        fi

+

+        SOURCES="$SOURCES $srcdir/src/core/unix/*.c"

+        ;;

     *-*-cygwin* | *-*-mingw32*)

         ARCH=win32

         if test "$build" != "$host"; then # cross-compiling

diff -ru SDL2-2.0.8.orig/src/dynapi/SDL_dynapi.c SDL2-2.0.8/src/dynapi/SDL_dynapi.c

--- SDL2-2.0.8.orig/src/dynapi/SDL_dynapi.c	2018-03-01 17:34:42.000000000 +0100

+++ SDL2-2.0.8/src/dynapi/SDL_dynapi.c	2020-09-27 14:14:34.616542401 +0200

@@ -222,7 +222,7 @@

     return retval;

 }

-#elif defined(unix) || defined(__unix__) || defined(__APPLE__) || defined(__HAIKU__) || defined(__QNX__)

+#elif defined(unix) || defined(__unix__) || defined(__APPLE__) || defined(__HAIKU__) || defined(__QNX__) || defined(__midipix__)

 #include <dlfcn.h>

 static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)

 {