Runtime problem with duplicate symbols

[nick clifton]

Hi Florian,

> $ gcc -o demo A.o B.o C.o -lbase

> The binary is just linked fine but it crashes at runtime. The reason
> is that the calls to libbase's init_ATree go to the one of A.o.
>
> Is there any way that we get an error message and link failure at link
> time such that we know that we must rename some symbols instead of
> difficult bug detection?

Not really no. :-(  You could try linking with --whole-archive.  Ie:

  gcc -o demo A.o B.o -Wl,--whole-archive -lbase -Wl,--no-whole-archive

This might work (I have not actually tried it).  You would probably only 
want to enable this during testing however as it will make your 
executables bigger.

Cheers
   Nick