Issue: gcc-9 was deleted from Github's macOS images (only last 3 revisions retained).
Solution: same as fpm#861. gcc-9 libs are hardcoded in fpm. Until the bootstrapping fpm version can be updated to one that was built with gcc-10, create symbolic links to the locations requested by fpm executable (no ABI changes in libgfortran)
Issue: gcc-9 was deleted from Github's macOS images (only last 3 revisions retained).
Solution: same as fpm#861. gcc-9 libs are hardcoded in fpm. Until the bootstrapping fpm version can be updated to one that was built with gcc-10, create symbolic links to the locations requested by fpm executable (no ABI changes in libgfortran)