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Update: emsdk to 3.1.28 and lzma (for emsdk) to 5.4.0 (#10234)

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Co-authored-by: Patric Stout <truebrain@openttd.org>
This commit is contained in:
clienthax
2022-12-29 22:34:45 +00:00
committed by GitHub
parent f90156f74c
commit 25f247047d
5 changed files with 45 additions and 57 deletions
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30
os/emscripten/README.md
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@@ -1,40 +1,38 @@
## How to build with Emscripten
Building with Emscripten works with emsdk 2.0.31 and above.
Please use docker with the supplied `Dockerfile` to build for emscripten.
It takes care of a few things:
- Use a version of emscripten we know works
- Patch in LibLZMA support (as this is not supported by upstream)
Currently there is no LibLZMA support upstream; for this we suggest to apply
the provided patch in this folder to your emsdk installation.
For convenience, a Dockerfile is supplied that does this patches for you
against upstream emsdk docker. Best way to use it:
Build the docker image:
First, build the docker image by navigating in the folder this `README.md` is in, and executing:
```
docker build -t emsdk-lzma .
```
Build the host tools first:
Next, navigate back to the root folder of this project.
Now we build the host tools first:
```
mkdir build-host
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build-host emsdk-lzma cmake .. -DOPTION_TOOLS_ONLY=ON
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build-host emsdk-lzma make -j5 tools
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build-host emsdk-lzma make -j$(nproc) tools
```
Next, build the game with emscripten:
Finally, we build the actual game:
```
mkdir build
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emcmake cmake .. -DHOST_BINARY_DIR=../build-host -DCMAKE_BUILD_TYPE=Release -DOPTION_USE_ASSERTS=OFF
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emmake make -j5
docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emmake make -j$(nproc)
```
And now you have in your build folder files like "openttd.html".
In the `build` folder you will now see `openttd.html`.
To run it locally, you would have to start a local webserver, like:
To run it locally, you would have to start a local webserver; something like:
```
cd build
python3 -m http.server
````
Now you can play the game via http://127.0.0.1:8000/openttd.html .
You can now play the game via http://127.0.0.1:8000/openttd.html .