https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105467
--- Comment #9 from Ben Boeckel <bugzilla.gcc at me dot benboeckel.net> --- > unless autoconf/automake started relying on the non-GNU `fdep` [1] project. Gah, editing gone awry. This was about Fortran module support in autoconf/autotools, not C++ module support (they have similar build graph strategies required).