| .. _migration: |
| |
| WebAssembly Migration Guide |
| =========================== |
| |
| (P)NaCl Deprecation Announcements |
| --------------------------------- |
| |
| Given the momentum of cross-browser WebAssembly support, we plan to focus our |
| native code efforts on WebAssembly going forward and plan to remove support for |
| PNaCl in Q2 2019 (except for Chrome Apps). We believe that the vibrant |
| ecosystem around `WebAssembly <http://webassembly.org>`_ |
| makes it a better fit for new and existing high-performance |
| web apps and that usage of PNaCl is sufficiently low to warrant deprecation. |
| |
| We also recently announced the deprecation Q1 2018 of |
| `Chrome Apps |
| <https://blog.chromium.org/2016/08/from-chrome-apps-to-web.html>`_ |
| outside of Chrome OS. |
| |
| |
| Toolchain Migration |
| ------------------- |
| |
| For the majority of (P)NaCl uses cases we recommend transitioning |
| from the NaCl SDK to `Emscripten |
| <http://webassembly.org/getting-started/developers-guide/>`_. |
| Migration is likely to be reasonably straightforward |
| if your application is portable to Linux, uses |
| `SDL <https://www.libsdl.org/>`_, or POSIX APIs. |
| While direct support for NaCl / Pepper APIs in not available, |
| we've attempted to list Web API equivalents. |
| For more challenging porting cases, please reach out on |
| native-client-discuss@googlegroups.com |
| |
| |
| API Migration |
| ------------- |
| |
| We've outlined here the status of Web Platform substitutes for each |
| of the APIs exposed to (P)NaCl. |
| Additionally, the table lists the library or option in Emscripten |
| that offers the closest substitute. |
| |
| We expect to add shared memory threads support to WebAssembly in 2017, |
| as threads are crucial to matching (P)NaCl's most interesting use |
| cases. Migration items which assume forthcoming threads support |
| are marked below. If your application's flow control relies heavily on blocking |
| APIs, you may also find threads support is required for convenient porting. |
| |
| While we've tried to be accurate in this table, |
| there are no doubt errors or omissions. |
| If you encounter one, please reach out to us on |
| native-client-discuss@googlegroups.com |
| |
| .. contents:: |
| :local: |
| :backlinks: none |
| :depth: 2 |
| |
| PPAPI |
| ----- |
| .. raw:: html |
| :file: public.html |
| |
| IRT |
| --- |
| .. raw:: html |
| :file: public.html |
| |
| PPAPI (Apps) |
| ------------ |
| .. raw:: html |
| :file: apps.html |
