[Bug bootstrap/81298] [7 Regression] Bootstrapping trunk fails during stage1-bubble on x86_64-pc-linux-gnu with --enable-maintainer-mode

[schwab@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81298

--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
configure.ac:33: error: Please use exactly Autoconf 2.64 instead of 2.69.
../config/override.m4:12: _GCC_AUTOCONF_VERSION_CHECK is expanded from...
configure.ac:33: the top level
autom4te: m4 failed with exit status: 1
aclocal-1.11: autom4te failed with exit status: 1
make[3]: *** [Makefile:406: ../../trunk/libbacktrace/aclocal.m4] Fehler 1