Building non-cygwin DLL with cyg-gcc

[John Fortin]

> There seem to be two methods of building DLLs, the User Guide method
> (invoke dlltool multiple times) and the recent Mailing List method (use
> the undocumented --output-implib ld switch).  If I do the ML method, I get
>
>   > gcc -Wl,--out-implib,file.a -shared -o file.dll file.o
>   Cannot export _bss_end__: symbol not defined
>   Cannot export _bss_start__: symbol not defined
>   Cannot export _data_end__: symbol not defined
>   Cannot export _data_start__: symbol not defined
>   Creating library file: Packet.a
>   collect2: ld returned 1 exit status
>   make: *** [main] Error 1

I'll ask this again...  Is the above the expected result of using -shared.
Why is ld trying to export _bss_* and _data_*.
Is it a requirement now to provide a .def file??  The mailing list archives
talk a bit around this issue.

John



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