configure.in:19: error: possibly undefined macro: AC_C___ATTRIBUTE__
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure.in:149: error: possibly undefined macro: AC_DEFINE
configure.in:151: error: possibly undefined macro: AM_CONDITIONAL
configure.in:638: error: possibly undefined macro: AC_PATH_GENERIC
configure.in:893: error: possibly undefined macro: AC_ABSTRACT_SOCKET_TEST