external/bsd/am-utils/dist/m4/macros/check_libwrap_severity.m4

   1 dnl ######################################################################
   2 dnl check if libwrap (if exists), requires the caller to define the variables
   3 dnl deny_severity and allow_severity.
   4 AC_DEFUN([AMU_CHECK_LIBWRAP_SEVERITY],
   5 [
   6 AC_CACHE_CHECK([if libwrap wants caller to define allow_severity and deny_severity], ac_cv_need_libwrap_severity_vars, [
   7 # save, then reset $LIBS back to original value
   8 SAVEDLIBS="$LIBS"
   9 LIBS="$LIBS -lwrap"
  10 # run program one without defining our own severity variables
  11 AC_TRY_RUN(
  12 [
  13 int main()
  14 {
  15    exit(0);
  16 }
  17 ],[ac_tmp_val1="yes"],[ac_tmp_val1="no"])
  18 # run program two with defining our own severity variables
  19 AC_TRY_RUN(
  20 [
  21 int deny_severity, allow_severity, rfc931_timeout;
  22 int main()
  23 {
  24    exit(0);
  25 }
  26 ],[ac_tmp_val2="yes"],[ac_tmp_val2="no"])
  27 # restore original value of $LIBS
  28 LIBS="$SAVEDLIBS"
  29 # now decide what to do
  30 if test "$ac_tmp_val1" = "no" && test "$ac_tmp_val2" = "yes"
  31 then
  32         ac_cv_need_libwrap_severity_vars="yes"
  33 else
  34         ac_cv_need_libwrap_severity_vars="no"
  35 fi
  36 ])
  37 if test "$ac_cv_need_libwrap_severity_vars" = "yes"
  38 then
  39         AC_DEFINE(NEED_LIBWRAP_SEVERITY_VARIABLES)
  40 fi
  41 ])