Switch Developer Toolchains with xcode-select

xcode-select decides which Xcode — or standalone Command Line Tools — provide clang, git, and the SDKs.

macOSxcode-selectclangtoolchainLow risk

Run `xcode-select -p` to print the active developer directory; switch with `sudo xcode-select -s /Applications/Xcode.app`.

01Command

Command

$ xcode-select -p

02What it does

xcode-select manages a single symlink (/Library/Developer/CommandLineTools or an Xcode.app) that every developer tool consults. -p shows the current target, -s switches it (requires sudo), and -r resets to the system default. Mismatches are the classic cause of errors like 'unable to find utility' or wrong-SDK builds after a Xcode version change. xcrun respects the same setting, so one switch fixes all tools at once.

03Risk

RiskLow risk

RequirementsBuilt-in on macOS; switching paths requires sudo.

!Warning: After switching, run `xcodebuild -version` or `clang --version` to confirm the expected toolchain is active.

04Undo

Undo

$ sudo xcode-select -r

05Sources

xcode-select — manage the active developer directory (macOS)
SS64 · technical · 2026-09-17
Evidence: Documents -p to print the active path, -s to switch it, and -r to reset to the default toolchain.

Last verified: 2026-09-17 · Category: Developer