Apple - Homebrew: Your CLT does not support macOS 11.0
Simplest solution that worked when upgrading to Big Sur. A clean install may not require the solution below. There is inconsistency with the way CLT is upgraded to 12.2.
sudo rm -rf /Library/Developer/CommandLineTools
sudo xcode-select --install
Worked with the following versions (post-install)
❯ /usr/bin/xcodebuild -version
Xcode 12.2
Build version 12B45b
❯ pkgutil --pkg-info=com.apple.pkg.CLTools_Executables
package-id: com.apple.pkg.CLTools_Executables
version: 12.2.0.0.1.1603499215
volume: /
location: /
install-time: 1605632122
groups: com.apple.FindSystemFiles.pkg-group
Big Sur
11.0.1 (20B29)
We can fix this in couple of ways
- Download Command Line Tools for Xcode 12.3 from Apple website
- Or as suggested by kontinuity use the following commands to delete existing command line tools and clean install new version
sudo rm -rf /Library/Developer/CommandLineTools
sudo xcode-select --install
Currently Brew is being updated incrementally to support MacOS Big Sur. You can follow the progress in the corresponding GitHub issue.
There is very little breakage in the core for Big Sur on intel and most of the work is to get core features working on the pre-release Apple Silicon hardware. Most people on Intel hardware and not the DTK should be ready now during beta or very soon after release of the initial version of the OS.