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add details on zig installation

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Sébastien Besnier 2020-10-30 11:34:56 +01:00 committed by GitHub
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BUILDING_FROM_SOURCE.md
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@ -21,8 +21,25 @@ MacOS systems should already have `libunwind`, but other systems will need to in
Some systems may already have `libc++-dev` on them, but if not, you may need to install it. (On Ubuntu, this can be done with `sudo apt-get install libc++-dev`.)
### Zig
We use a specific version of Zig, a build off the the commit `0088efc4b`. The latest tagged version of Zig, 0.6.0, doesn't include the feature to emit LLVM ir, which is a core feature of how we use Zig. To download this specific version, you can use the following links:
* [linux](https://ziglang.org/builds/zig-linux-x86_64-0.6.0+0088efc4b.tar.xz)
We use a specific version of Zig, a build off the the commit `0088efc4b`. The latest tagged version of Zig, 0.6.0, doesn't include the feature to emit LLVM ir, which is a core feature of how we use Zig. To download this specific version, you can:
* use the following commands on Debian/Ubuntu (on other distros, steps should be essentially the same):
```
cd /tmp
# download the files
wget https://ziglang.org/builds/zig-linux-x86_64-0.6.0+0088efc4b.tar.xz
# uncompress:
xz -d zig-linux-x86_64-0.6.0+0088efc4b.tar.xz
# untar:
tar xvf zig-linux-x86_64-0.6.0+0088efc4b.tar
# move the files into /opt:
sudo mkdir -p /opt/zig
sudo mv tar xvf zig-linux-x86_64-0.6.0+0088efc4b.tar/* /opt/zig/
```
Then add `/opt/zig/` to your `PATH` (e.g. in `~/.bashrc`).
Reload your `.bashrc` file: `source ~/.bashrc` and test that `zig` is
an available command.
* [macOS](https://ziglang.org/builds/zig-macos-x86_64-0.6.0+0088efc4b.tar.xz)
Alternatively, any recent master branch build should work. To install the latest master branch build you can use: