Makefile gives error when building latest version (tested in ubuntu and arch)

[Miguel-hrvs]

rm -rf build/bin
node util/embed.js ./src/bitsy/engine ./src/bitsybox
Usage: /usr/bin/sdl2-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs]
rm -rf build/bitsybox_LIN
mkdir -p build/bin
gcc src/bitsybox/.c src/bitsybox/duktape/.c -I/usr/include/SDL2 -D_REENTRANT -DPLATFORM_LIN -o build/bin/bitsybox
=== embed: ./src/bitsy/engine -> ./src/bitsybox ===
bitsy.js
dialog.js
font.js
renderer.js
script.js
sound.js
transition.js
world.js
=== done! ===
node util/embed.js ./src/bitsy/font ./src/bitsybox
=== embed: ./src/bitsy/font -> ./src/bitsybox ===
ascii_small.bitsyfont
=== done! ===
node util/embed.js ./src/boot ./src/bitsybox
=== embed: ./src/boot -> ./src/bitsybox ===
boot.bitsy
boot.js
=== done! ===
node util/embed.js ./src/tune ./src/bitsybox
=== embed: ./src/tune -> ./src/bitsybox ===
dialog_demo.js
tool_demo.js
tune.bitsy
tune.js
=== done! ===
mkdir -p build/bitsybox_LIN/
mkdir -p build/bitsybox_LIN/games
cp -R build/bin/bitsybox build/bitsybox_LIN//bitsybox
cp: no se puede efectuar `stat' sobre 'build/bin/bitsybox': No existe el fichero o el directorio
make: *** [Makefile:133: package-release] Error 1