AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
+ AC_CHECK_FUNCS(pstat_getstatic pstat_getdynamic)
AC_CHECK_FUNCS(realpath canonicalize_file_name)
AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
AC_DEFINE(HAVE_SYS_NERR, 1, [Define if you have the sys_nerr variable.])