curl https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz -o emsdk-portable.tar.gz
gunzip emsdk-portable.tar.gz
tar -xf emsdk-portable.tar
cd emsdk_portable
./emsdk update
./emsdk install clang-incoming-64bit emscripten-incoming-64bit sdk-incoming-64bit
./emsdk activate clang-incoming-64bit emscripten-incoming-64bit sdk-incoming-64bit
source ./emsdk_env.sh
cd ..


mkdir hello
cd hello
echo '#include <stdio.h>' > hello.c
echo 'int main(int argc, char ** argv) {' >> hello.c
echo 'printf("Hello, world!\n");' >> hello.c
echo '}' >> hello.c
emcc hello.c -s WASM=1 -o hello.html