add gsup_test_client program

Related: OS#1592
Change-Id: Iafd844393dd90b899f84ed61c875c1eb533436d7
diff --git a/openbsc/src/gprs/Makefile.am b/openbsc/src/gprs/Makefile.am
index d228b39..a827b77 100644
--- a/openbsc/src/gprs/Makefile.am
+++ b/openbsc/src/gprs/Makefile.am
@@ -37,6 +37,7 @@
 	$(NULL)
 
 bin_PROGRAMS = \
+	gsup_test_client \
 	osmo-gbproxy \
 	$(NULL)
 if HAVE_LIBGTP
@@ -133,3 +134,16 @@
 	$(LIBGTP_LIBS) \
 	-lrt \
 	$(NULL)
+
+gsup_test_client_SOURCES = \
+	gprs_gsup_client.c \
+	gsup_test_client.c \
+	oap.c \
+	$(NULL)
+gsup_test_client_LDADD = \
+	$(LIBOSMOCORE_LIBS) \
+	$(LIBOSMOGSM_LIBS) \
+	$(LIBOSMOVTY_LIBS) \
+	$(LIBOSMOABIS_LIBS) \
+	-lrt \
+	$(NULL)