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# Building on macOS
**N.B. C++17 is required to build the asset processing program that we use (ZAPD), so check your OS version can support this before proceeding**
## Dependencies
For macOS, use Homebrew to install the following dependencies:
* coreutils
* make
* python3
* libpng
* bash
* libxml2
* libiconv
You can install them with the following commands:
```bash
brew update
brew install coreutils make python3 libpng bash libxml2 libiconv
```
(The repository expects Homebrew-installed programs to be either linked correctly in `$PATH` etc. or in their default locations.)
Homebrew does not have clang-format-14 but MacPorts does
(Have been unable to confirm actual commands with somone that has a Mac)
## Building mips-linux-binutils
The following instructions are written for MacOS users but should apply to any Unix-like system, with maybe some modifications at the end regarding the bash_profile.
Create destination dir for binutils
```bash
sudo mkdir -p /opt/cross
```
Create and enter local working dir
```bash
mkdir ~/binutils-tmp
cd ~/binutils-tmp
```
Get and extract binutils source
```bash
curl -O https://ftp.gnu.org/gnu/binutils/binutils-2.35.tar.bz2
tar xjf binutils-2.35.tar.bz2
```
(You may find this command does not work: if so, just access the URL in a browser and save it to `~/binutils-tmp`.)
Create and enter a build directory
```bash
mkdir build-binutils
cd build-binutils
```
Configure the build
```bash
../binutils-2.35/configure --target=mips-linux-gnu --prefix=/opt/cross --disable-gprof --disable-gdb --disable-werror
```
Make and install binutils
```bash
make -j
sudo make install
```
Edit your `~/.bash_profile`/`~/.zprofile` (or whichever shell you use) to add the new binutils binaries to the system PATH
```bash
echo 'export PATH="$PATH:/opt/cross/bin"' >> ~/.bash_profile
```
Reload ~/.bash_profile (or just launch a new terminal tab)
```bash
source ~/.bash_profile
```
If this worked, you can now delete the temporary directory `~/binutils-tmp`.
## Final note
Apple's version of `make` is very out-of-date, so you should use the brew-installed `gmake` in place of `make` in this repo from now on.
You should now be able to continue from [step 2](../README.md#2-clone-the-repository) of the Linux instructions.
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