***** aclocal *****
***** PWD: /var/tmp/portage/sci-physics/fastjet-3.0.3-r1/work/fastjet-3.0.3/plugins/SISCone/siscone
***** aclocal

configure.ac:5: error: 'AM_CONFIG_HEADER': this macro is obsolete.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.ac:5: the top level
autom4te-2.69: /usr/bin/m4 failed with exit status: 1
aclocal-1.13: error: echo failed with exit status: 1