gpsd_config.h not packaged in libgps-dev / gpsd.h uses undefined macro UNUSED

Not a bug in the packaging, but in upstream\s code. Working with upstream on a fix right now.

As workaround add

#if defined(__GNUC__)
# define UNUSED __attribute__((unused)) /* Flag variable as unused */
#else /* not __GNUC__ */
# define UNUSED
#endif

before including gpsd.h

Fixed by upstream in r5718 + r5719

Bernd, thanks for tracking it down, appreciated :-)

Fixed in gpsd >= 2.39-4. Needs to be synced from Debian.

Depends on #410277

This bug was fixed in the package gpsd - 2.39-5

---------------
gpsd (2.39-5) unstable; urgency=low

  [ Thomas Mueller ]
  * [c884a6d0] Updating debconf translation: de.po (Closes: #538900)

  [ Bernd Zeimetz ]
  * [26d4a13e] gpsd.init: Move bluetooth to Should-Start - thanks to
    Carsten Einig
  * [7113becd] Add missing macro UNUSED to gpsd.h. (LP: #396256) -
    thanks to Dennis Nienhüser

gpsd (2.39-4) unstable; urgency=low

  * [51e8dea3] Updating git-dch settings in git-bp config.
  * [35f17def] Updating debconf translation: cs.po (Closes: #534958) -
    thanks to Miroslav Kure
  * [c1917386] Updating debconf translation: eu.po (Closes: #535038) -
    thanks to Piarres Beobide
  * [4b6719c3] Updating debconf translation: ja.po (Closes: #535067) -
    thanks to Kenshi Muto
  * [b188ed05] Updating debconf translation: fi.po (Closes: #535112) -
    thanks to Esko Arajärvi
  * [ae2b44fe] Updating debconf translation: ro.po (Closes: #535121) -
    thanks to Eddy Petrișor
  * [0d989720] Updating debconf translation: sv.po (Closes: #535149) -
    thanks to Martin Bagge / brother
  * [413b36ab] Updating debconf translation: sk.po (Closes: #535157) -
    thanks to <email address hidden>
  * [ca978d4f] Updating debconf translation: es.po (Closes: #536239) -
    thanks to Francisco Javier Cuadrado
  * [9efd437a] Updating debconf translation: pt.po (Closes: #536276) -
    thanks to "Traduz - Portuguese Translation Team"
  * [6e18a392] Updating debconf translation: ru.po (Closes: #536563) -
    thanks to Yuri Kozlov
  * [2c970b41] Updating debconf translation: it.po (Closes: #536596) -
    thanks to Luca Monducci
  * [d998da9f] Updating debconf translation: gl.po (Closes: #537427) -
    thanks to marce
  * [64375707] Fixing debconf prio for "brokenconfig" state. (Closes:
    #536010) - thanks to Alban Browaeys <email address hidden>
  * [9d7960e6] Updating debconf-updatepo reformatted .po files.

gpsd (2.39-3) experimental; urgency=low

  * [98418e2f] Set priority of all debconf questions to low.
  * [c5d8d1f4] Set control socket option if not in DAEMON_OPTS. (Closes:
    #515085) - thanks to Sascha Silbe
  * [9bed6ecc] Update gpsd.templates to explain options better.
  * [fc356713] Support building for Python2.6.
  * [ee363122] Enable parallel build for python modules.
  * [568c3961] Rise python-all-dev build-dep for --install-layout.
  * [751c5138] Bump python-support build-dep to >= 0.7.1
  * [1545b437] Remove workarounds for broken --disable-python.
  * [59f41451] Using python in build target names.
  * [dcb57ba6] Build gpsd-dbg containing the debug symbols.
  * [52ac81d1] Update templates as suggested during the review. - thanks
    to Justin B Rye
  * [5b099fbe] Updating control file after review. - thanks to Justin B
    Rye
  * [03147ac2] Ensure a valid configuration in debconf. (Closes:
    #515085) - thanks to Sascha Silbe
  * [13db408f] Add error message to gpsd templates.
  * [549e673e] Update error message in template after review.
  * [73b14c74] Adding fuzzy po files after template update.
  * [e1bbde15] Bail out after too many errors during config.
  * [a280e182] Fix description: there is more than NMEA only.
  * [6d9b16f3] Remove extra sp...