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Add MacOS toolchain instructions (#163)

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Dan Tocchini IV 2021-05-07 07:52:32 -07:00 committed by GitHub
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@ -44,13 +44,32 @@ bash -c './hello.com' # zsh/fish workaround (we upstreamed a patch)
So if you intend to copy the binary to Windows or Mac then please do
that before you run it, not after.
If you're developing on Windows or MacOS then you need to download an
### MacOS
If you're developing on MacOS you can install the GNU compiler
collection for x86_64-elf via homebrew:
```sh
brew install x86_64-elf-gcc
```
Then in the above scripts just replace `gcc` and `objcopy` with
`x86_64-elf-gcc` and `x86_64-elf-objcopy` to compile your APE binary.
### Windows
If you're developing on Windows then you need to download an
x86_64-pc-linux-gnu toolchain beforehand. See the [Compiling on
Windows](https://justine.lol/cosmopolitan/windows-compiling.html)
tutorial. It's needed because the ELF object format is what makes
universal binaries possible.
Cosmopolitan can also be compiled from source on any Linux distro.
## Source Builds
Cosmopolitan can be compiled from source on any Linux distro. GNU make
needs to be installed beforehand. This is a freestanding hermetic
repository that bootstraps using a vendored static gcc9 executable.
No further dependencies are required.
```sh
wget https://justine.lol/cosmopolitan/cosmopolitan-0.3.tar.gz