https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86450
--- Comment #26 from Jonathan Wakely <redi at gcc dot gnu.org> --- No, I needed far more than that. Obviously I needed the right versions of autoconf and automake first in my PATH, which is simple. But I also needed to use contrib/gcc_update to fix all the timestamps, so that there weren't loads of errors caused by reconf'ing files in libbacktrace, zlib and lto-plugin. contrib/gcc_update prevented those, but that means a simple "svn up" or "git pull" doesn't work when using maintainer mode, and the script can't be used if you have any uncommitted changes in a git tree. After solving those issues I got a load of errors from libtool macros: configure.ac:40: warning: macro `AM_PROG_LIBTOOL' not found in library I have no idea what that's caused by. Obviously I have libtool installed (in /usr/bin and I also tried a symlink to it in /opt/autotools-gcc/bin where I have the old versions of autoconf and automake). I'm not aware of any dependency on a specific libtool version.
