$NetBSD$

Prepare SUBST (libs) for editting following parts for portability:
@INET6@ in options.mk,  @PTHREAD_LDFLAGS@

--- dk-filter/Makefile.m4.orig	2007-05-31 22:31:01.000000000 +0200
+++ dk-filter/Makefile.m4	2007-08-01 10:37:46.000000000 +0200
@@ -9,7 +9,9 @@
 define(`confMT', `TRUE')
 define(`confREQUIRE_LIBSM', `true')
 
-APPENDDEF(`confLIBS', `-lssl -lcrypto')
+APPENDDEF(`confLIBS', `-lssl -lcrypto @PTHREAD_LDFLAGS@ ')
+define(`confLDOPTS', `${LDFLAGS}')
+@INET6@ APPENDDEF(`confENVDEF', `-DNETINET6 ')
 
 ifdef(`bld_USE_ARLIB', `bldPUSH_SMLIB(`ar')', `')
 
