message: WebGL: Support compile filament.wasm on Linux platform.
diff: #!/bin/bash
  -
  +if [ `uname` == "Linux" ];then
  + curl -OL https://github.com/ninja-build/ninja/releases/download/v1.8.2/ninja-linux.zip
  + unzip -q ninja-linux.zip
  +elif [ `uname` == "Darwin" ];then
  curl -OL https://github.com/ninja-build/ninja/releases/download/v1.8.2/ninja-mac.zip
  unzip -q ninja-mac.zip
  +else
  + echo "Unsupported OS"
  + exit 1
  +fi
  +
  chmod +x ninja
  export PATH="$PWD:$PATH"
  