I have a problem with autoconf 2.13 in PlaneShift, it prints:

configure.in:102: warning: AC_TRY_RUN called without default to allow cross compiling
autoconf: Undefined macros:
***BUG in Autoconf--please report*** AC_PATH_PROG
***BUG in Autoconf--please report*** AC_CACHE_CHECK
***BUG in Autoconf--please report*** AC_PATH_PROG
configure.in:107:AM_CHECK_PYTHON_HEADERS(,[AC_MSG_ERROR(could not find Python headers)])
configure.in:108:AM_CHECK_PYTHON_LIBS(,[AC_MSG_ERROR(could not find Python libraries)])
configure.in:113:AC_MSG_CHECKING([for spcial defines])
configure.in:125:AC_MSG_RESULT([$SPDEFINES])
configure.in:138:AC_MSG_CHECKING(for debug)
configure.in:143:  AC_MSG_RESULT(yes)
configure.in:148:  AC_MSG_RESULT(no)
configure.in:75:  AC_MSG_ERROR([
configure.in:85:        ACX_PTHREAD(,AC_MSG_ERROR([couldn\'t find pthread lib]))
configure.in:90:AC_MSG_CHECKING(if we use readline)
configure.in:95:        AC_MSG_RESULT(yes)
configure.in:98:        AC_MSG_RESULT(no)

May be version is too old?