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Add JavaScript platform support (emcc, wasm).

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Includes update to `README.md` with instructions on how to build a
GDNative library for webassembly.
This commit is contained in:
Fabio Alessandrelli
2020-12-03 20:57:58 +01:00
parent 55c0a2ea03
commit f6899e190f
2 changed files with 43 additions and 4 deletions
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15
README.md
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@@ -275,9 +275,18 @@ Godot headers repository for more information.
#### HTML5
GDNative isn't supported on the HTML5 platform yet. Support is being tracked on
[issue #12243](https://github.com/godotengine/godot/issues/12243) in the main
Godot repository.
GDNative is supported on [specific exports](https://docs.godotengine.org/en/latest/tutorials/export/exporting_for_web.html#export-options) for the HTML5 platform since Godot `3.2.4`. Linking webassembly modules is currently underspecified in the standard, but [emscripten](https://emscripten.org/), which Godot uses to build the HTML5 version, implements its own linking system.
To build GDNative libraries you wwill need a recent version of [emscripten](https://emscripten.org/).
```bash
cd SimpleLibrary
emcc -o bin/libtest.wasm -g -O3 -s SIDE_MODULE=1 src/init.cpp godot-cpp/bin/<name of the godot-cpp> -Igodot-cpp/include -Igodot-cpp/include/core -Igodot-cpp/include/gen -Igodot-cpp/godot-headers
```
You'll need to replace `<name of the godot-cpp>` with the file that was created in [**Compiling the cpp bindings library**](#compiling-the-cpp-bindings-library).
This creates the file `libtest.so` in your `SimpleLibrary/bin` directory.
### Creating `.gdnlib` and `.gdns` files