Comment 26 for bug 1619616

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_