[SOLVED] Undefined symbols in .so

Issue

I develop library and trying run tests. When I run example building I got the undefined reference errors (in example one of that errors):

/opt/nt/lib/libntproto2db.so: undefined reference to ntproto::variant_t::TYPE::UINT8'

But, if I install same version with same commit from repository, which contains package built on the someone else machine, i have not received this error.

nm tool recognizes symbol as undefined, if library built on my machine:

$ nm -C -u /opt/nt/lib/libntproto2db.so | grep UINT8
                 U ntproto::variant_t::TYPE::UINT8

That is, if I build this library on another machine, then these symbols do not become undefined. Why?

I tried:

• Move std::unordered_map global inline const variable, that contains values of this type from .h to .cc file, that helped, but this is bad solution.
• Disable optimization -O0
• Check $LIBRARY_PATH, it's clear as a must be.
• View ld commandline during both builds (make VERBOSE=1), it is the same.

Solution

This is a distro problem, on docker it builds succesfully. Probably, one of the packages on my distro have wrong version.

Answered By - OlegUP

Answer Checked By - Gilberto Lyons (WPSolving Admin)