[Mingw-users] Duplicate symbol when linking one DLL to another

[Timothy J. W. <tj...@om...>]

   I'm using binutils-2.13.90-20021209-1 and gcc-3.2.1-20021201-3 
(crossing from Mac OS X) and I've run into something that I don't think 
should be happening...

   I'm linking two DLLs, one that depends upon the other.  I was linking 
with just '-shared' on both, but when I do this, I get duplicate symbol 
definitions from DllMainCRTStartup being defined in both.

   But, if I add something like:

	-Wl,--output-def,Foo.def,--out-implib,libFoo.a

   to my link command for each DLL, then I don't get the duplicate 
symbol error.  Presumably the libFoo.a doesn't list DllMainCRTStartup 
and the linker picks up .a files in preference to .dll files.

   I'm not specifying a def file when I build my DLLs, but I assumed 
that the various runtime symbols would automatically not get exported.  
Can any one point out what I'm misunderstanding?

-tim