Linking static libraries with custom object files

[ben.boeckel (Ben Boeckel (Kitware))]

@serge

lib-b is defined as OBJECT and not STATIC since there is no way to tell cmake to link it to lib-a.

In CMake, static libraries do not “link” (though some linkers will check symbol availability, there’s no actual copying of symbols between libraries; only object files get collected).

@serge

In the link command that builds lib-a I can see that b1.obj is included but not b2.obj just as if $<TARGET_OBJECTS:lib-b> includes b1.obj but does not include b2.obj such that finally lib-a is incomplete

I believe that TARGET_OBJECTS is derived from the compilation commands CMake generates and manual .obj files are not considered. I don’t know that CMake provides this abstraction right now. This issue seems to be the one you’d be most interested in.