How to install Apple Command Line Tools
Open Terminal, paste this command, and follow the macOS installer prompt:
xcode-select --install
A window will pop up, as macOS asks you to install these tools. The installer may take a few minutes. If macOS says the tools are already installed, you can return to PHP Monitor and continue setup.
Why this is required
Apple Command Line Tools provide the system developer utilities used by Homebrew and many PHP-related packages. PHP Monitor does not require the full Xcode app, but it does expect these command line tools to be available.
- Homebrew may need these tools to install, build, or repair packages.
- Common developer utilities such as Git and compiler tools are provided through this package.
- PHP Monitor can guide setup more reliably when macOS has the expected developer toolchain installed.
What's next?
Once Apple's Command Line Tools have been installed, return to PHP Monitor and continue through Setup Assistant. Homebrew will be installed next.