Build failure of network:osmocom:nightly/osmo-sgsn in Raspbian_9.0/armv7l

[OBS Notification]

Visit https://build.opensuse.org/package/live_build_log/network:osmocom:nightly/osmo-sgsn/Raspbian_9.0/armv7l

Package network:osmocom:nightly/osmo-sgsn failed to build in Raspbian_9.0/armv7l

Check out the package for editing:
  osc checkout network:osmocom:nightly osmo-sgsn

Last lines of build log:
[  577s]     bss_ptmsi = bss_ptmsi | GSM23003_TMSI_SGSN_MASK;
[  577s]                             ^~~~~~~~~~~~~~~~~~~~~~~
[  577s] gb_proxy.c:246:28: note: each undeclared identifier is reported only once for each function it appears in
[  577s] Makefile:615: recipe for target 'gb_proxy.o' failed
[  577s] make[4]: *** [gb_proxy.o] Error 1
[  577s] make[4]: Leaving directory '/usr/src/packages/BUILD/src/gprs'
[  577s] Makefile:391: recipe for target 'all-recursive' failed
[  577s] make[3]: *** [all-recursive] Error 1
[  577s] make[3]: Leaving directory '/usr/src/packages/BUILD/src'
[  577s] Makefile:453: recipe for target 'all-recursive' failed
[  577s] make[2]: *** [all-recursive] Error 1
[  577s] make[2]: Leaving directory '/usr/src/packages/BUILD'
[  577s] Makefile:385: recipe for target 'all' failed
[  577s] make[1]: *** [all] Error 2
[  577s] make[1]: Leaving directory '/usr/src/packages/BUILD'
[  577s] dh_auto_build: make -j1 returned exit code 2
[  577s] debian/rules:45: recipe for target 'build' failed
[  577s] make: *** [build] Error 2
[  577s] dpkg-buildpackage: error: debian/rules build gave error exit status 2
[  577s] 
[  577s] obs-arm-6 failed "build osmo-sgsn_1.4.0.27.43c5.dsc" at Fri Jun 28 23:39:11 UTC 2019.
[  577s] 
[  578s] ### VM INTERACTION START ###
[  581s] [  550.801527] sysrq: SysRq : Power Off
[  581s] [  550.816864] reboot: Power down
[  581s] ### VM INTERACTION END ###
[  581s] 
[  582s] obs-arm-6 failed "build osmo-sgsn_1.4.0.27.43c5.dsc" at Fri Jun 28 23:39:16 UTC 2019.
[  582s] 

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