However, in some cases, when calling install.packages(), a working gfortran installation is needed.Īnd if type = "source" is used, it needs to be there. These do not require a working gfortran installation. This requirement does not occur very often, as most users install R package binaries on macOS. Unfortunately, this change did not result in a smooth experience for R users who want to compile packages from source that require a functional gfortran compiler. However, this is not a long-term approach, and usually, one would like to do this via brew, the most popular package manager for macOS. Now, one could go to and manually install the respective. The cask was removed in December 2020 and merged into the gcc formula (which can be installed via brew install gcc). Only new users who want to install gfortran this way, will get the message that the cask is “not available”. Users who have installed this cask already, will not notice since things will continue to work as normal. For a long time, gfortran support on macOS could be achieved by installing the homebrew cask gfortran via brew cask install gfortran.Īs of 2021, both the brew cask command and the cask gfortran are deprecated.
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