[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):

[fxcoudert at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797

--- Comment #8 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Can reproduce with GNU Make 4.2.1, on the same system.