nat: Fix make distcheck for the nat
The jenkins runs make distcheck in the default configuration and
not with the nat enabled.
DISTCHECK_CONFIGURE_FLAGS="--enable-nat" make distcheck
diff --git a/openbsc/tests/bsc-nat/Makefile.am b/openbsc/tests/bsc-nat/Makefile.am
index 1078d9b..d773f26 100644
--- a/openbsc/tests/bsc-nat/Makefile.am
+++ b/openbsc/tests/bsc-nat/Makefile.am
@@ -15,10 +15,10 @@
$(top_srcdir)/src/osmo-bsc_nat/bsc_nat_rewrite_trie.c \
$(top_srcdir)/src/osmo-bsc_nat/bsc_mgcp_utils.c
bsc_nat_test_LDADD = $(top_builddir)/src/libbsc/libbsc.a \
- $(top_srcdir)/src/libctrl/libctrl.a \
- $(top_srcdir)/src/libmgcp/libmgcp.a \
- $(top_srcdir)/src/libtrau/libtrau.a \
- $(top_srcdir)/src/libcommon/libcommon.a \
+ $(top_builddir)/src/libctrl/libctrl.a \
+ $(top_builddir)/src/libmgcp/libmgcp.a \
+ $(top_builddir)/src/libtrau/libtrau.a \
+ $(top_builddir)/src/libcommon/libcommon.a \
$(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) -lrt \
$(LIBOSMOSCCP_LIBS) $(LIBOSMOVTY_LIBS) \
$(LIBOSMOABIS_LIBS)