This fixes build with sys-devel/slibtool

--- nftables-0.9.8/src/Makefile.am
+++ nftables-0.9.8/src/Makefile.am
@@ -90,7 +90,7 @@
 
 libnftables_la_LIBADD = ${LIBMNL_LIBS} ${LIBNFTNL_LIBS} libparser.la
 libnftables_la_LDFLAGS = -version-info ${libnftables_LIBVERSION} \
-			 --version-script=$(srcdir)/libnftables.map
+			 -Wl,--version-script=$(srcdir)/libnftables.map
 
 if BUILD_MINIGMP
 noinst_LTLIBRARIES += libminigmp.la