I'm trying to install perdition so I need to install vanessa_logger first. But when I do ./autogen.sh, it has an error. See below:

[root@mail5 vanessa_logger-0.0.5]# ./autogen.sh --prefix=/usr
autoheader: WARNING: Using auxiliary files such as `acconfig.h', `config.h.bot'
autoheader: WARNING: and `config.h.top', to define templates for `config.h.in'
autoheader: WARNING: is deprecated and discouraged.
autoheader:
autoheader: WARNING: Using the third argument of `AC_DEFINE' and
autoheader: WARNING: `AC_DEFINE_UNQUOTED' allows to define a template without
autoheader: WARNING: `acconfig.h':
autoheader:
autoheader: WARNING: AC_DEFINE([NEED_FUNC_MAIN], 1,
autoheader: [Define if a function `main' is needed.])
autoheader:
autoheader: WARNING: More sophisticated templates can also be produced, see the
autoheader: WARNING: documentation.
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane...

I've been searching to solution for almost 3hrs but none could give an answer. Just wondering if some of the member here how to solve the problem.