https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61485
--- Comment #3 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> --- (In reply to Richard Biener from comment #1) > Why would you do autoreconf? With most projects, this is needed with svn working copies, otherwise some files may become obsolete and one gets weird errors. > The supported way of doing this is to put the exact versions in your PATH. This would mean using a specific PATH to build GCC, which is bad.