Hmm the library publishes a load of symbols that seem unnecessary at best: $ readelf -Ws /usr/local/lib/libprotobuf-lite.so | grep -v " UND " | grep -v 6google8protobuf | wc -l 123
2.6.1 seems far more reasonable: $ readelf -Ws /usr/lib/x86_64-linux-gnu/libprotobuf-lite.so.9 | grep -v " UND " | grep -v 6google8protobuf | wc -l 10 I'm especially suspicious of the following leading to entanglement with libstdc++: $ readelf -Ws /usr/local/lib/libprotobuf-lite.so.10 | grep -v " UND " | grep -v 6google8protobuf | grep _ZNS 402: 0000000000023080 474 FUNC WEAK DEFAULT 12 _ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE19_M_emplace_back_auxIJS5_EEEvDpOT_ 552: 000000000001b2c0 220 FUNC WEAK DEFAULT 12 _ZNSt6vectorIPFvvESaIS1_EE19_M_emplace_back_auxIJRKS1_EEEvDpOT_ 700: 0000000000023260 117 FUNC WEAK DEFAULT 12 _ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE12emplace_backIJS5_EEEvDpOT_ 39: 0000000000023310 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPcEEvT_S7_St20forward_iterator_tag.isra.25 40: 0000000000023310 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPKcEEvT_S8_St20forward_iterator_tag.isra.20 46: 000000000001c4a0 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPcEEvT_S7_St20forward_iterator_tag.isra.29 47: 000000000001c4a0 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPKcEEvT_S8_St20forward_iterator_tag.isra.23 72: 0000000000019740 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPcEEvT_S7_St20forward_iterator_tag.isra.42 73: 0000000000019740 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPKcEEvT_S8_St20forward_iterator_tag.isra.36 78: 000000000001b3a0 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPcEEvT_S7_St20forward_iterator_tag.isra.30 87: 000000000001e820 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPcEEvT_S7_St20forward_iterator_tag.isra.45 88: 000000000001e820 194 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPKcEEvT_S8_St20forward_iterator_tag.isra.39 115: 000000000002ea80 174 FUNC LOCAL DEFAULT 12 _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPKcEEvT_S8_St20forward_iterator_tag.isra.21.constprop.32 466: 0000000000023260 117 FUNC WEAK DEFAULT 12 _ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE12emplace_backIJS5_EEEvDpOT_ 776: 000000000001b2c0 220 FUNC WEAK DEFAULT 12 _ZNSt6vectorIPFvvESaIS1_EE19_M_emplace_back_auxIJRKS1_EEEvDpOT_ 777: 0000000000023080 474 FUNC WEAK DEFAULT 12 _ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE19_M_emplace_back_auxIJS5_EEEvDpOT_ -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mir in Ubuntu. https://bugs.launchpad.net/bugs/1619616 Title: Mir test fails with protobuf3: Protobuf-can-be-reloaded (SEGFAULT) Status in Mir: Invalid Status in mir package in Ubuntu: Invalid Status in protobuf package in Ubuntu: In Progress Bug description: builds with 3.0.0-7, then has one failing test: test 19 Start 19: Protobuf-can-be-reloaded 19: Test command: /<<BUILDDIR>>/mir-0.24.0+16.10.20160815.3/obj-powerpc64le-linux-gnu/bin/mir_test_reload_protobuf 19: Test timeout computed to be: 9.99988e+06 19/19 Test #19: Protobuf-can-be-reloaded ..........................***Exception: SegFault 0.17 sec 95% tests passed, 1 tests failed out of 19 Total Test time (real) = 125.73 sec The following tests FAILED: 19 - Protobuf-can-be-reloaded (SEGFAULT) Errors while running CTest Makefile:85: recipe for target 'test' failed make[2]: *** [test] Error 8 To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1619616/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp