autoconf bug leads to configure syntax error when running buildconf

I am attempting to create an extension to php.. The only problem is, whenever I run buildconf after creating a skeletion with ./ext_skel --extname=my_module I receive the following output from buildconf ./buildconf using default Zend directory buildconf: checking installation... buildconf: autoconf version 2.13 (ok) buildconf: automake version 1.4-p5 (ok) buildconf: libtool version 1.4.2 (ok) rebuilding configure configure.in:562: AC_TRY_COMPILE was called before AC_AIX configure.in:562: AC_TRY_RUN was called before AC_AIX configure.in:562: AC_TRY_COMPILE was called before AC_AIX configure.in:562: AC_TRY_RUN was called before AC_AIX autoconf: Undefined macros: ***BUG in Autoconf--please report*** AC_ACVERSION ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF ***BUG in Autoconf--please report*** AC_TRY_DLOPEN_SELF rebuilding main/php_config.h.in configure.in:562: AC_TRY_COMPILE was called before AC_AIX configure.in:562: AC_TRY_RUN was called before AC_AIX configure.in:562: AC_TRY_COMPILE was called before AC_AIX configure.in:562: AC_TRY_RUN was called before AC_AIX Then, when I run ./configure I receive a syntax error part way through.. My autoconf was 2.53 and got upgraded to 2.57 in case that was the problem... help! Josh.