gtphub_test: build only when c-ares and gtp are present.
diff --git a/openbsc/tests/gtphub/Makefile.am b/openbsc/tests/gtphub/Makefile.am
index 59480ed..bcaf4fa 100644
--- a/openbsc/tests/gtphub/Makefile.am
+++ b/openbsc/tests/gtphub/Makefile.am
@@ -4,7 +4,11 @@
 EXTRA_DIST = \
 	gtphub_test.ok
 
+if HAVE_LIBGTP
+if HAVE_LIBCARES
 noinst_PROGRAMS = gtphub_test
+endif
+endif
 
 gtphub_test_SOURCES = gtphub_test.c
 gtphub_test_LDFLAGS = \