So I'm trying to follow the server build directions at https://www.xquartz.org/Developer-Info.html I've checked out the git repo (since I can't find a source tarball anywhere), but I can't get past the "autoreconf -fvi" step: $ autoreconf -fvi autoreconf: Entering directory `.' autoreconf: configure.ac: not using Gettext autoreconf: running: aclocal -I /opt/X11/share/aclocal -I /usr/local/share/aclocal --force -I m4 autoreconf: configure.ac: tracing autoreconf: configure.ac: not using Libtool autoreconf: running: /usr/local/autoconf-2.69/bin/autoconf --force autoreconf: running: /usr/local/autoconf-2.69/bin/autoheader --force autoreconf: running: automake --add-missing --copy --force-missing configure.ac:35: installing './compile' configure.ac:41: installing './config.guess' configure.ac:41: installing './config.sub' configure.ac:34: installing './install-sh' configure.ac:34: installing './missing' Xext/Makefile.am:1: error: Libtool library used but 'LIBTOOL' is undefined Xext/Makefile.am:1: The usual way to define 'LIBTOOL' is to add 'LT_INIT' Xext/Makefile.am:1: to 'configure.ac' and run 'aclocal' and 'autoconf' again. Xext/Makefile.am:1: If 'LT_INIT' is in 'configure.ac', make sure Xext/Makefile.am:1: its definition is in aclocal's search path. ... lots more repetitions of that ... autoreconf: automake failed with exit status: 1 I installed libtool but that didn't change the results. Seems like the top-level configure.ac doesn't think it should use libtool, but all the sub-makefiles do think that. What am I doing wrong? regards, tom lane