configure.ac: libserialport is optional.

[libsigrok.git] / hardware / common / dmm / metex14.c

diff --git a/hardware/common/dmm/metex14.c b/hardware/common/dmm/metex14.c
index 8ba4291364d2d3b2f9cf2880992ec985c4819c49..4a37efe0c545577b9eff5bbb33b46c60fd02677c 100644 (file)
--- a/hardware/common/dmm/metex14.c
+++ b/hardware/common/dmm/metex14.c
@@ -254,6 +254,7 @@ static gboolean flags_valid(const struct metex14_info *info)
        return TRUE;
 }
 
+#ifdef HAVE_LIBSERIALPORT
 SR_PRIV int sr_metex14_packet_request(struct sr_serial_dev_inst *serial)
 {
        const uint8_t wbuf = 'D';
@@ -262,6 +263,7 @@ SR_PRIV int sr_metex14_packet_request(struct sr_serial_dev_inst *serial)
 
        return (serial_write(serial, &wbuf, 1) == 1) ? SR_OK : SR_ERR;
 }
+#endif
 
 SR_PRIV gboolean sr_metex14_packet_valid(const uint8_t *buf)
 {