Arch Linux

autoconf 2.66 from testing break building all my X.org git packages (e.g. mesa-git and xf86-video-intel-git):

To reproduce:
1. Install autoconf 2.66-1 from [testing]
2. Try to build xf86-video-intel-git from AUR
3. Observe:

autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal
/usr/share/aclocal/gtkglextmm-1.2.m4:225: warning: underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
/usr/share/aclocal/gtkglextmm-1.2.m4:225: run info '(automake)Extending aclocal'
/usr/share/aclocal/gtkglextmm-1.2.m4:225: or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
configure.ac:24: warning: AC_INIT: not a literal: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
autoreconf: configure.ac: tracing
configure.ac:24: warning: AC_INIT: not a literal: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
autoreconf: running: libtoolize --copy
libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, `.'.
libtoolize: copying file `./ltmain.sh'
libtoolize: Consider adding `AC_CONFIG_MACRO_DIR([m4])' to configure.ac and
libtoolize: rerunning libtoolize, to keep the correct libtool macros in-tree.
libtoolize: Consider adding `-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
/usr/share/aclocal/gtkglextmm-1.2.m4:225: warning: underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
/usr/share/aclocal/gtkglextmm-1.2.m4:225: run info '(automake)Extending aclocal'
/usr/share/aclocal/gtkglextmm-1.2.m4:225: or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
configure.ac:24: warning: AC_INIT: not a literal: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
autoreconf: running: /usr/bin/autoconf
configure.ac:24: warning: AC_INIT: not a literal: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
configure:12436: error: possibly undefined macro: AS_MESSAGE_LOG_FDdnl
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
autoreconf: /usr/bin/autoconf failed with exit status: 1

Log of working build with autoconf 2.65-2:

autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal
/usr/share/aclocal/gtkglextmm-1.2.m4:225: warning: underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
/usr/share/aclocal/gtkglextmm-1.2.m4:225: run info '(automake)Extending aclocal'
/usr/share/aclocal/gtkglextmm-1.2.m4:225: or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy
libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, `.'.
libtoolize: copying file `./ltmain.sh'
libtoolize: Consider adding `AC_CONFIG_MACRO_DIR([m4])' to configure.ac and
libtoolize: rerunning libtoolize, to keep the correct libtool macros in-tree.
libtoolize: Consider adding `-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
/usr/share/aclocal/gtkglextmm-1.2.m4:225: warning: underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
/usr/share/aclocal/gtkglextmm-1.2.m4:225: run info '(automake)Extending aclocal'
/usr/share/aclocal/gtkglextmm-1.2.m4:225: or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
autoreconf: running: /usr/bin/autoconf
autoreconf: running: /usr/bin/autoheader
autoreconf: running: automake --add-missing --copy --no-force
configure.ac:47: installing `./compile'
configure.ac:41: installing `./config.guess'
configure.ac:41: installing `./config.sub'
configure.ac:33: installing `./install-sh'
configure.ac:33: installing `./missing'
src/Makefile.am: installing `./depcomp'
autoreconf: Leaving directory `.'
checking for a BSD-compatible install... /bin/install -c
<-- snip - ./configure continues -->