--- tnm/generic/tnmInt.h
+++ tnm/generic/tnmInt.h
@@ -36,7 +36,10 @@
 #define TnmGetTime TclpGetTime
 #endif
 
+#if TCL_MAJOR_VERSION < 8 || TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION < 4
 #define TnmCreateDirectory	TclpCreateDirectory
+#endif
+
 #if TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION == 8 && TCL_RELEASE_SERIAL > 2 
 #define TnmStat			TclStat
 #else
--- tnm/generic/tnmUtil.c
+++ tnm/generic/tnmUtil.c
@@ -12,6 +12,18 @@
 #include "tnmInt.h"
 #include "tnmPort.h"
 
+#if TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION >= 4 || TCL_MAJOR_VERSION > 8
+int TnmCreateDirectory(char *path)
+{
+	Tcl_Obj *o;
+	int res;
+	o = Tcl_NewStringObj(path, -1);
+	Tcl_IncrRefCount(o);
+        res = Tcl_FSCreateDirectory(o);
+	Tcl_DecrRefCount(o);
+	return res;
+}
+#endif
 
 /*
  *----------------------------------------------------------------------
--- unix/configure.in
+++ unix/configure.in
@@ -251,8 +251,8 @@
 AC_CHECK_LIB(ieee, main, [LIBS="$LIBS -lieee"])
 AC_CHECK_LIB(rpc, main, [LIBS="$LIBS -lrpc"])
 AC_CHECK_LIB(rpcsvc, main, [LIBS="$LIBS -lrpcsvc"])
-AC_CHECK_FUNC(res_mkquery, ,
-	AC_CHECK_LIB(resolv, res_mkquery, [LIBS="$LIBS -lresolv"]))
+AC_CHECK_FUNC(__res_mkquery, ,
+	AC_CHECK_LIB(resolv, __res_mkquery, [LIBS="$LIBS -lresolv"]))
 
 #----------------------------------------------------------------------------
 #	Checks for various include files missing on some machines.