Index: converters/ktextdecode/Makefile
===================================================================
--- converters/ktextdecode/Makefile	(revision 308671)
+++ converters/ktextdecode/Makefile	(working copy)
@@ -19,7 +19,7 @@
 USE_GMAKE=	yes
 
 post-patch:
-	@${REINPLACE_CMD} -e 's|-O2||g; s|-lpthread|${PTHREAD_LIBS}|g' \
+	@${REINPLACE_CMD} -e 's|-O2||g' \
 		${WRKSRC}/${CONFIGURE_SCRIPT}
 
 .include <bsd.port.mk>
Index: converters/pdf2djvu/Makefile
===================================================================
--- converters/pdf2djvu/Makefile	(revision 308671)
+++ converters/pdf2djvu/Makefile	(working copy)
@@ -20,7 +20,7 @@
 LIB_DEPENDS+=	djvulibre:${PORTSDIR}/graphics/djvulibre
 
 GNU_CONFIGURE=	yes
-CONFIGURE_ENV=	LIBS=${PTHREAD_LIBS}
+CONFIGURE_ENV=	LIBS=-pthread
 CPPFLAGS+=	-I${LOCALBASE}/include
 USE_GMAKE=	yes