libgomp's Makefile.in were last re-generated by automake 1.16.1; result: --enable-maintainer-mode now tries to find and use automake-16 when generating that file.
Committed as obvious in commit r11-3613-g2fe5a545e09edb4001bbfb74c571c806ebc7cb25 Tobias commit 2fe5a545e09edb4001bbfb74c571c806ebc7cb25 Author: Tobias Burnus <tob...@codesourcery.com> Date: Fri Oct 2 12:07:57 2020 +0200 libgomp: Regenerate configure files with automake 1.15.1 libgomp/ChangeLog: * Makefile.in: Regenerate with automake 1.15.1. * aclocal.m4: Likewise. * configure: Likewise. * testsuite/Makefile.in: Likewise. ----------------- Mentor Graphics (Deutschland) GmbH, Arnulfstraße 201, 80634 München / Germany Registergericht München HRB 106955, Geschäftsführer: Thomas Heurung, Alexander Walter