https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61485
Vincent Lefèvre <vincent-gcc at vinc17 dot net> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |UNCONFIRMED Resolution|INVALID |--- --- Comment #5 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> --- I get the error even without autoreconf. --enable-maintainer-mode triggers the problem and this option may be needed if the source is changed, as documented in: https://gcc.gnu.org/install/configure.html