Xcode can only provide autotools if it is installed, thus check that
first. Skipping this check will try to compare a `nil` Xcode version to
4.3, the first version of Xcode to not provide autotools.
FixesHomebrew/homebrew#48208.
ClosesHomebrew/homebrew#48278.
Signed-off-by: Martin Afanasjew <martin@afanasjew.de>
Check for non-prefixed findutils in path via gnubin symlinks or directly
ClosesHomebrew/homebrew#46987.
Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
On all of the machines I have upgraded to OS X El Capitan, my /usr/local
directory has changed ownership. Since this message shows up as an error
during `brew update`, I figured it would be good to beef up the
explanation.
ClosesHomebrew/homebrew#44670.
Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
