Could not symlink bin/autoconf Target /opt/homebrew/bin/autoconf is a symlink belonging to autoconf@2.72. You can unlink it: brew unlink autoconf@2.72 To force the link and overwrite all conflicting files: brew link --overwrite autoconf To list all files that would be deleted: brew link --overwrite autoconf --dry-run

Already linked: /opt/homebrew/Cellar/autoconf@2.72/2.72