m4/snmp.m4

   1 #
   2 # lldp_CHECK_SNMP
   3 #
   4 AC_DEFUN([lldp_CHECK_SNMP], [
   5    AC_PATH_TOOL([NETSNMP_CONFIG], [net-snmp-config], [no])
   6    if test x"$NETSNMP_CONFIG" = x"no"; then
   7       AC_MSG_ERROR([*** unable to find net-snmp-config])
   8    fi
   9    NETSNMP_LIBS=`${NETSNMP_CONFIG} --agent-libs`
  10    NETSNMP_CFLAGS="`${NETSNMP_CONFIG} --base-cflags` -DNETSNMP_NO_INLINE"
  11
  12    _save_flags="$CFLAGS"
  13    _save_libs="$LIBS"
  14    CFLAGS="$CFLAGS ${NETSNMP_CFLAGS}"
  15    LIBS="$LIBS ${NETSNMP_LIBS}"
  16    AC_MSG_CHECKING([whether C compiler supports flag "${NETSNMP_CFLAGS} ${NETSNMP_LIBS}" from Net-SNMP])
  17    AC_LINK_IFELSE([AC_LANG_PROGRAM([
  18 int main(void);
  19 ],
  20 [
  21 {
  22   return 0;
  23 }
  24 ])],[AC_MSG_RESULT(yes)],[
  25 AC_MSG_RESULT(no)
  26 AC_MSG_ERROR([*** incorrect CFLAGS from net-snmp-config])])
  27    # Is Net-SNMP usable?
  28    AC_CHECK_LIB([netsnmp], [snmp_register_callback], [:],
  29        [AC_MSG_ERROR([*** unable to use net-snmp])], ${NETSNMP_LIBS})
  30    # Do we have subagent support?
  31    AC_CHECK_FUNCS([netsnmp_enable_subagent], [:],
  32        [AC_MSG_ERROR([*** no subagent support in net-snmp])])
  33
  34    AC_SUBST([NETSNMP_LIBS])
  35    AC_SUBST([NETSNMP_CFLAGS])
  36    AC_DEFINE_UNQUOTED([USE_SNMP], 1, [Define to indicate to enable SNMP support])
  37
  38    # Should we use f_create_from_tstring_new or f_create_from_tstring?
  39    AC_CHECK_MEMBERS([netsnmp_tdomain.f_create_from_tstring_new],,,
  40         [
  41 @%:@include <net-snmp/net-snmp-config.h>
  42 @%:@include <net-snmp/net-snmp-includes.h>
  43 @%:@include <net-snmp/library/snmp_transport.h>
  44 ])
  45    # Do we have a usable <net-snmp/agent/util_funcs.h> header?
  46    AC_CHECK_HEADERS([net-snmp/agent/util_funcs.h],,,[
  47 @%:@include <net-snmp/net-snmp-config.h>
  48 @%:@include <net-snmp/net-snmp-includes.h>
  49 @%:@include <net-snmp/library/snmp_transport.h>
  50 @%:@include <net-snmp/agent/net-snmp-agent-includes.h>
  51 @%:@include <net-snmp/agent/snmp_vars.h>
  52    ])
  53
  54    CFLAGS="$_save_flags"
  55    LIBS="$_save_libs"
  56 ])