Summary

This binary build of gfortran and GCC is an experimental version based on GCC 11, by Iain Sandoe, for Apple Silicon machines.

Two files are provided:

• gfortran-ARM-11.0-BigSur.tar.xz is an archive, to be unpacked under /usr/local
• gfortran-ARM-11.0-BigSur.dmg is a user-friendly installer

Details

The compiler is built from sources at this revision: https://github.com/iains/gcc-darwin-arm64/commit/3069f0e62ca20ec20ad46d6a4e8ab90238cbde4d

These packages were built with Xcode command-line tools 12.3 (beta), and should work with version 12.2 or later. They expect the SDK to be available under /Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk

$ /usr/local/gfortran/bin/gfortran -v
Using built-in specs.
COLLECT_GCC=/usr/local/gfortran/bin/gfortran
COLLECT_LTO_WRAPPER=/usr/local/gfortran/libexec/gcc/aarch64-apple-darwin20/11.0.0/lto-wrapper
Target: aarch64-apple-darwin20
Configured with: ../../gcc-darwin-arm64/configure --prefix=/usr/local/gfortran --with-gmp=/Users/fx/build/deps --with-isl=/Users/fx/build/deps --enable-languages=c,c++,fortran,objc,obj-c++ --build=aarch64-apple-darwin20 --with-native-system-header-dir=/usr/include --with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201114 (experimental) (GCC)