Handle pre/post JS file processing in a single location. NFC (#14949)

1 file changed
tree: b85efbe5c1a443ec22ecdbac8ae1b90d4bb07a28
  1. .circleci/
  2. .github/
  3. cmake/
  4. docs/
  5. media/
  6. site/
  7. src/
  8. system/
  9. tests/
  10. third_party/
  11. tools/
  12. .clang-format
  13. .coveragerc
  14. .editorconfig
  15. .eslintrc.yml
  16. .flake8
  17. .gitattributes
  18. .gitignore
  19. .gitmodules
  20. .style.yapf
  22. ChangeLog.md
  24. em++
  25. em++.bat
  26. em++.py
  27. em-config
  28. em-config.bat
  29. em-config.py
  30. emar
  31. emar.bat
  32. emar.py
  33. embuilder
  34. embuilder.bat
  35. embuilder.py
  36. emcc
  37. emcc.bat
  38. emcc.py
  39. emcmake
  40. emcmake.bat
  41. emcmake.py
  42. emconfigure
  43. emconfigure.bat
  44. emconfigure.py
  45. emdump
  46. emdump.bat
  47. emdwp
  48. emdwp.bat
  49. emmake
  50. emmake.bat
  51. emmake.py
  52. emnm
  53. emnm.bat
  54. emprofile
  55. emprofile.bat
  56. emranlib
  57. emranlib.bat
  58. emranlib.py
  59. emrun
  60. emrun.bat
  61. emrun.py
  62. emscons
  63. emscons.bat
  64. emscons.py
  65. emscripten-version.txt
  66. emscripten.py
  67. emsize
  68. emsize.bat
  69. emsize.py
  71. Makefile
  72. package-lock.json
  73. package.json
  74. README.md
  75. requirements-dev.txt

emscripten logo

Main project page: https://emscripten.org

GitHub CI status: CircleCI

Chromium builder status: emscripten-releases


Emscripten compiles C and C++ to WebAssembly using LLVM and Binaryen. Emscripten output can run on the Web, in Node.js, and in wasm runtimes.

Emscripten provides Web support for popular portable APIs such as OpenGL and SDL2, allowing complex graphical native applications to be ported, such as the Unity game engine and Google Earth. It can probably port your codebase, too!

While Emscripten mostly focuses on compiling C and C++ using Clang, it can be integrated with other LLVM-using compilers (for example, Rust has Emscripten integration, with the wasm32-unknown-emscripten and asmjs-unknown-emscripten targets).


Emscripten is available under 2 licenses, the MIT license and the University of Illinois/NCSA Open Source License.

Both are permissive open source licenses, with little if any practical difference between them.

The reason for offering both is that (1) the MIT license is well-known and suitable for a compiler toolchain, while (2) LLVM‘s original license, the University of Illinois/NCSA Open Source License, was also offered to allow Emscripten’s code to be integrated upstream into LLVM. The second reason became less important after Emscripten switched to the LLVM wasm backend, at which point there isn't any code we expect to move back and forth between the projects; also, LLVM relicensed to Apache 2.0 + exceptions meanwhile. In practice you can just consider Emscripten as MIT licensed (which allows you to do pretty much anything you want with a compiler, including commercial and non-commercial use).

See LICENSE for the full content of the licenses.