diff -udbBPr --exclude='*~' -ur tclx8.4-orig/tclconfig/tcl.m4 tclx8.4/tclconfig/tcl.m4
--- tclx8.4-orig/tclconfig/tcl.m4	2005-11-21 19:54:51.000000000 +0100
+++ tclx8.4/tclconfig/tcl.m4	2008-01-20 11:04:16.000000000 +0100
@@ -1332,7 +1332,7 @@
 	    #CFLAGS_OPTIMIZE="${CFLAGS_OPTIMIZE} -D__NO_STRING_INLINES -D__NO_MATH_INLINES"
 
 	    if test "$have_dl" = yes; then
-		SHLIB_LD="${CC} -shared"
+		SHLIB_LD='${CC} -shared -Wl,-soname,${@}'
 		DL_OBJS="tclLoadDl.o"
 		DL_LIBS="-ldl"
 		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"