--- ./octave-gtk-0.3/configure.in	2005-03-27 03:00:33.000000000 -0500
+++ ./octave-gtk-0.4/configure.in	2005-03-28 12:47:33.082747904 -0500
@@ -66,8 +66,10 @@ AC_ARG_ENABLE(debug,
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_CPP
+
 #not really necessary!
 #AM_PROG_LEX
+
 AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 AC_PROG_INSTALL
@@ -107,13 +109,14 @@ then
 	AC_SUBST(DEBUG_FLAG)
 fi
 
+
 #default no
 if test $athome = "no";
 then
-	if test $exec_prefix = ""
+	if test $exec_prefix = "NONE"
 	then
 		OCTAVE_DESTDIR=`$OCTAVE_CONFIG  --oct-site-dir`
-	else
+	else		
 		OCTAVE_DESTDIR=$exec_prefix
 	fi
 else