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Added paragraph about SSE3 support to build-instructions.md. #76

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Added paragraph about SSE3 support to build-instructions.md. #76

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f0e88c1
Added paragraph about SSE3 support to build-instructions.md.
osxaudio Jun 27, 2024
6866393
Slight improvement of readability of build-instructions.md
osxaudio Jun 27, 2024
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36 changes: 36 additions & 0 deletions src/build-instructions.md
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Expand Up @@ -292,3 +292,39 @@ If you try to use an unsupported file system, this error will be printed:
```
Cannot mount overlay: Invalid argument
```

### SSE3 Support

When running on older CPUs without SSE3 Support, you might run into issues like:

```
user$ darling shell
Bootstrapping the container with launchd...
Cannot open mnt namespace file: No such file or directory
```

or more likely

```
user$ sudo darling shell
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I don't like the implication of including a command like sudo darling shell in the wiki. I don't want the wiki to imply that this is an okay thing to do.

I recommend removing the user$ darling shell and user$ sudo darling shell part.

Setting up a new Darling prefix at /root/.darling
Bootstrapping the container with launchd...
Illegal instruction (core dumped)
```

If your CPU doesn't support SSE3, you might still be able to run darling by installing the opemu-linux kernel module.

But first check `/proc/cpuinfo` to find out if your CPU supports SSE3, e.g. by running `cat /proc/cpuinfo | grep SSE3`. Unless it comes back with `SSE3` your CPU doesn't support SSE3.

To install [opemu-linux](https://github.com/mirh/opemu-linux) first clone the repository:
```bash
git clone https://github.com/mirh/opemu-linux
```
then switch directories & compile the kernel module:
```bash
cd opemu-linux && make
```
and load it:
```bash
sudo insmod op_emu.ko
```
Comment on lines +319 to +330
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I have mixed feelings about including build instructions for projects that the Darling team does not manage. Ideally, you should submit a PR request to the opemu-linux to add build instructions.

With that being said, it's looks like that project is no longer in active development.