-AC_CHECK_HEADERS([arpa/inet.h netinet/in.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h getopt.h sys/sysinfo.h])
-
-# Checks for typedefs, structures, and compiler characteristics.
-AC_TYPE_SIZE_T
-AC_TYPE_SSIZE_T
-
-# Checks for library functions.
-AC_FUNC_MALLOC
-AC_FUNC_REALLOC
-AC_CHECK_FUNCS([gettimeofday memmove socket strdup strtol])
-
-# Detects whether the function sysinfo is available
-# At least kfreebsd 6.0.3 does not provide it.
-SYSINFO_FCT=
-AC_CHECK_FUNC(sysinfo,
- [SYSINFO_FCT='1' AC_DEFINE([HAVE_SYSINFO_FCT],[1],[Use sysinfo])],
- [AC_MSG_WARN("sysinfo function not present")])
-AM_CONDITIONAL(SYSINFO_FCT, test -n "$SYSINFO_FCT")