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+Emscripten
+================================================================================
+
+Build:
+
+ $ mkdir build
+ $ cd build
+ $ emconfigure ../configure --host=asmjs-unknown-emscripten --disable-assembly --disable-threads --enable-cpuinfo=false CFLAGS="-O2"
+ $ emmake make
+
+Or with cmake:
+
+ $ mkdir build
+ $ cd build
+ $ emcmake cmake ..
+ $ emmake make
+
+To build one of the tests:
+
+ $ cd test/
+ $ emcc -O2 --js-opts 0 -g4 testdraw2.c -I../include ../build/.libs/libSDL2.a ../build/libSDL2_test.a -o a.html
+
+Uses GLES2 renderer or software
+
+tests: https://dl.dropboxusercontent.com/u/17360362/SDL2-em/index.html
+
+Some other SDL2 libraries can be easily built (assuming SDL2 is installed somewhere):
+
+SDL_mixer (http://www.libsdl.org/projects/SDL_mixer/):
+
+ $ EMCONFIGURE_JS=1 emconfigure ../configure
+ build as usual...
+
+SDL_gfx (http://cms.ferzkopp.net/index.php/software/13-sdl-gfx):
+
+ $ EMCONFIGURE_JS=1 emconfigure ../configure --disable-mmx
+ build as usual...