[gpsd-dev] [PATCH] gpsmon: fix build when nmea is false

[spdawson]

From: Simon Dawson <address@hidden>

When nmea is False and ncurses support is enabled, the build fails as
follows.


gpsmon.o: In function `gpsmon_hook':
gpsmon.c:(.text+0x974): undefined reference to `driver_nmea0183'
collect2: error: ld returned 1 exit status
scons: *** [gpsmon] Error 1
scons: building terminated because of errors.


The problem appears to be a failure to protect use of the driver_nmea0183
variable with appropriate #ifdef guards.

Signed-off-by: Simon Dawson <address@hidden>
---
 gpsmon.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gpsmon.c b/gpsmon.c
index 106e080..c965a3f 100644
--- a/gpsmon.c
+++ b/gpsmon.c
@@ -36,7 +36,9 @@ extern struct monitor_object_t garmin_mmt, garmin_bin_ser_mmt;
 extern struct monitor_object_t italk_mmt, ubx_mmt, superstar2_mmt;
 extern struct monitor_object_t fv18_mmt, gpsclock_mmt, mtk3301_mmt;
 extern struct monitor_object_t oncore_mmt, tnt_mmt, aivdm_mmt;
+#ifdef NMEA_ENABLE
 extern const struct gps_type_t driver_nmea0183;
+#endif /* NMEA_ENABLE */
 
 /* These are public */
 struct gps_device_t session;
@@ -477,9 +479,11 @@ static void select_packet_monitor(struct gps_device_t 
*device)
      */
     if (device->packet.type != last_type) {
        const struct gps_type_t *active_type = device->device_type;
+#ifdef NMEA_ENABLE
        if (device->packet.type == NMEA_PACKET
            && ((device->device_type->flags & DRIVER_STICKY) != 0))
            active_type = &driver_nmea0183;
+#endif /* NMEA_ENABLE */
        if (!switch_type(active_type))
            longjmp(terminate, TERM_DRIVER_SWITCH);
        else {
-- 
1.8.3.2