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

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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:
[  651s]     bss_ptmsi = bss_ptmsi | GSM23003_TMSI_SGSN_MASK;
[  651s]                             ^~~~~~~~~~~~~~~~~~~~~~~
[  651s] gb_proxy.c:246:28: note: each undeclared identifier is reported only once for each function it appears in
[  651s] Makefile:615: recipe for target 'gb_proxy.o' failed
[  651s] make[4]: *** [gb_proxy.o] Error 1
[  651s] make[4]: Leaving directory '/usr/src/packages/BUILD/src/gprs'
[  651s] Makefile:391: recipe for target 'all-recursive' failed
[  651s] make[3]: *** [all-recursive] Error 1
[  651s] make[3]: Leaving directory '/usr/src/packages/BUILD/src'
[  651s] Makefile:453: recipe for target 'all-recursive' failed
[  651s] make[2]: *** [all-recursive] Error 1
[  651s] make[2]: Leaving directory '/usr/src/packages/BUILD'
[  651s] Makefile:385: recipe for target 'all' failed
[  651s] make[1]: *** [all] Error 2
[  651s] make[1]: Leaving directory '/usr/src/packages/BUILD'
[  651s] dh_auto_build: make -j1 returned exit code 2
[  651s] debian/rules:45: recipe for target 'build' failed
[  651s] make: *** [build] Error 2
[  651s] dpkg-buildpackage: error: debian/rules build gave error exit status 2
[  651s] 
[  651s] armbuild22 failed "build osmo-sgsn_1.4.0.27.43c5.dsc" at Tue Jun 25 12:01:41 UTC 2019.
[  651s] 
[  651s] ### VM INTERACTION START ###
[  654s] [  631.961764] sysrq: SysRq : Power Off
[  654s] [  632.006627] reboot: Power down
[  655s] ### VM INTERACTION END ###
[  655s] 
[  655s] armbuild22 failed "build osmo-sgsn_1.4.0.27.43c5.dsc" at Tue Jun 25 12:01:45 UTC 2019.
[  655s] 

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