Adding check for bonjour to configure.in.

configure

@@ -5005,6 +5005,68 @@ $as_echo "${ac_cv_c_tclh}" >&6; }
 #TEA_PRIVATE_TK_HEADERS
 #TEA_PATH_X
 
+ac_fn_c_check_header_mongrel "$LINENO" "dns_sd.h" "ac_cv_header_dns_sd_h" "$ac_includes_default"
+if test "x$ac_cv_header_dns_sd_h" = x""yes; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing DNSServiceRegister" >&5
+$as_echo_n "checking for library containing DNSServiceRegister... " >&6; }
+if test "${ac_cv_search_DNSServiceRegister+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char DNSServiceRegister ();
+int
+main ()
+{
+return DNSServiceRegister ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' dns_sd; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_DNSServiceRegister=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if test "${ac_cv_search_DNSServiceRegister+set}" = set; then :
+  break
+fi
+done
+if test "${ac_cv_search_DNSServiceRegister+set}" = set; then :
+
+else
+  ac_cv_search_DNSServiceRegister=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_DNSServiceRegister" >&5
+$as_echo "$ac_cv_search_DNSServiceRegister" >&6; }
+ac_res=$ac_cv_search_DNSServiceRegister
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+fi
+
+
+
 #--------------------------------------------------------------------
 # Check whether --enable-threads or --disable-threads was given.
 # This auto-enables if Tcl was compiled threaded.

configure.in

@@ -122,6 +122,8 @@ TEA_PUBLIC_TCL_HEADERS
 #TEA_PRIVATE_TK_HEADERS
 #TEA_PATH_X
 
+AC_CHECK_HEADER(dns_sd.h, [AC_SEARCH_LIBS(DNSServiceRegister, [dns_sd])])
+
 #--------------------------------------------------------------------
 # Check whether --enable-threads or --disable-threads was given.
 # This auto-enables if Tcl was compiled threaded.