b78045ffe7 | ||
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.. | ||
Makefile | ||
README.md | ||
main.cpp | ||
shell_minimal.html |
README.md
How to Build
- You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
- You may also refer to our Continuous Integration setup for Emscripten setup.
- Depending on your configuration, in Windows you may need to run
emsdk/emsdk_env.bat
in your console to access the Emscripten command-line tools. - Then build using
make
while in theexample_emscripten/
directory.
How to Run
To run on a local machine:
- Generally you may need a local webserver. Quoting https://emscripten.org/docs/getting_started:
"Unfortunately several browsers (including Chrome, Safari, and Internet Explorer) do not support file:// XHR requests, and can’t load extra files needed by the HTML (like a .wasm file, or packaged file data as mentioned lower down). For these browsers you’ll need to serve the files using a local webserver and then open http://localhost:8000/hello.html." - Emscripten SDK has a handy
emrun
command:emrun example_emscripten.html
which will spawn a temporary local webserver. See https://emscripten.org/docs/compiling/Running-html-files-with-emrun.html for details. - Otherwise you may use Python builtin webserver:
python -m http.server
in Python 3 orpython -m SimpleHTTPServer
in Python 2. After doing that, you can visit http://localhost:8000/.
Obsolete features:
- Emscripten 2.0 (August 2020) obsoleted the fastcomp backend, only llvm is supported.
- Emscripten 1.39.0 (October 2019) obsoleted the
BINARYEN_TRAP_MODE=clamp
compilation flag which was required with version older than 1.39.0 to avoid rendering artefacts. See #2877 for details. If you use an older version, uncomment this line in the Makefile:#EMS += -s BINARYEN_TRAP_MODE=clamp