autoconf 2.72 is already installed and up-to-date. To reinstall 2.72, run: brew reinstall autoconf

libtool 2.4.7 is already installed and up-to-date. To reinstall 2.4.7, run: brew reinstall libtool

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autoconf 2.72 is already installed and up-to-date. To reinstall 2.72, run: brew reinstall autoconf

libtool 2.4.7 is already installed and up-to-date. To reinstall 2.4.7, run: brew reinstall libtool