# cat /var/tmp/portage/dev-libs/ibpp-184.108.40.206/temp/aclocal.out
***** aclocal *****
***** PWD: /var/tmp/portage/dev-libs/ibpp-220.127.116.11/work
aclocal-1.13: warning: autoconf input should be named 'configure.ac', not 'configure.in'
/usr/share/aclocal/zthread.m4:34: warning: underquoted definition of AM_PATH_ZTHREAD
/usr/share/aclocal/zthread.m4:34: run info Automake 'Extending aclocal'
/usr/share/aclocal/zthread.m4:34: or see http://www.gnu.org/software/automake/manual/automake.html#Extending-aclocal
configure.in:3: error: 'AM_CONFIG_HEADER': this macro is obsolete.
You should use the 'AC_CONFIG_HEADERS' macro instead.
/usr/share/aclocal-1.13/obsolete-err.m4:12: AM_CONFIG_HEADER is expanded from...
configure.in:3: the top level
autom4te-2.69: /usr/bin/m4 failed with exit status: 1
aclocal-1.13: error: echo failed with exit status: 1
Please note that although this package is stable and automake-1.13 is ~arch,
this is still a priority fix because ~arch users are immediately affected.