add missing files

build-sdl2

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# I'm sick and tired of all the churn the three versions of autoconf
+# are causing in this repo. Stop committing the configure scripts
+# and just autoregen.
+./autogen.sh || exit 1
+
+# fix
+chmod +x vs/sdl/build-scripts/strip_fPIC.sh
+
+# prefer to compile against our own copy of SDL 2.x
+echo Compiling our internal SDL 2.x
+(cd vs/sdl2 && ./build-dosbox.sh) || exit 1
+
+# prefer to compile against our own copy of SDLnet 1.x
+echo Compiling our internal SDLnet 1.x
+(cd vs/sdlnet && ./build-dosbox.sh) || exit 1
+
+# now compile ourself
+echo Compiling DOSBox-X
+chmod +x configure
+./configure --enable-core-inline --enable-debug --prefix=/usr --enable-sdl2 "$@" || exit 1
+make -j3 || exit 1
+