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Process completed with exit code 1.

Treating doxygen as a formula. For the cask, use homebrew/cask/doxygen or specify the `--cask` flag. To silence this message, use the `--formula` flag.

automake 1.17 is already installed and up-to-date. To reinstall 1.17, run: brew reinstall automake

bison 3.8.2 is already installed and up-to-date. To reinstall 3.8.2, run: brew reinstall bison

doxygen 1.12.0 is already installed and up-to-date. To reinstall 1.12.0, run: brew reinstall doxygen

gettext 0.22.5 is already installed and up-to-date. To reinstall 0.22.5, run: brew reinstall gettext

libpng 1.6.44 is already installed and up-to-date. To reinstall 1.6.44, run: brew reinstall libpng

pkg-config 0.29.2_3 is already installed and up-to-date. To reinstall 0.29.2_3, run: brew reinstall pkg-config