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## Disclaimer
OSX builds have "best effort" support, i.e. build might not work at all, some
tests may fail and some sub-projects are excluded from build.
This manual outlines OSX specific setup. For general building and testing
instructions see "[README](README.md)" and
"[Building and Testing changes](doc/building_and_testing.md)".
[Homebrew](https://brew.sh/) is a popular package manager. JPEG XL library and
binaries could be installed using it:
```bash
brew install jpeg-xl
```
## Dependencies
Make sure that `brew doctor` does not report serious problems and up-to-date
version of XCode is installed.
Installing (actually, building) `clang` might take a couple hours.
```bash
brew install llvm
```
```bash
brew install coreutils cmake giflib jpeg-turbo libpng ninja zlib
```
Before building the project check that `which clang` is
`/usr/local/opt/llvm/bin/clang`, not the one provided by XCode. If not, update
`PATH` environment variable.
Also, setting `CMAKE_PREFIX_PATH` might be necessary for correct include paths
resolving, e.g.:
```bash
export CMAKE_PREFIX_PATH=`brew --prefix giflib`:`brew --prefix jpeg-turbo`:`brew --prefix libpng`:`brew --prefix zlib`
```
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