Visual C++ 2008 can't include its own static library

Question

I have two projects: a static library and a DLL that will link statically to this static library. Let's assume:

foo.lib (static library)
bar.dll (links against foo.lib)

foo.lib has the following function:

fooFile(...);

I successfully built the statically lib and dumpbin /symbols tells me that the function is there (although with some name mangling). When trying to link it against the bar.dll project, I get the following error:

error LNK2019: unresolved external symbol _fooFile referenced in function _fooSomething

Why is this failing? The same code works without issues in a Linux environment.

Answer 1

bar.dll project is compiled as C, or else includes foo.lib's headers under extern "C" {...}. Essentially, one project exports the function as having C++ linkage, while the other tries to import it with C linkage.