I am attempting to compile a shared library for Linux, using CMake under Yocto. The makefile specifies that it builds some .o objects then links them into a shared library .so. Some source files are C++, some are C. Maybe I should note that I do have source but I do not own this component, it is supposed to work out of the box.
Linking the .so fails with undefined reference to two functions which the linker notes are members of a class. This class exists but the undefined reference functions do not appear in header or source.
Grepping for the undefined functions finds results only in the binaries that were just generated. I don't understand why ld is looking for functions that, so far as I can tell, no one is asking for. Nor how do these functions appear in the binaries if they are not in header or source.
I considered just adding in the missing functions but because they are not specified anywhere I can't tell what sort of parameters they might need.
There is a small amount of documentation about this library online, it does not mention these functions either.
