Re: make shared library( .so )

[Robert Heller]

At Sat, 03 Feb 2007 06:54:43 -0800 Paul Pluzhnikov 
<ppluzhnikov-nsp@charter.net> wrote:

> 
> ravindra.csd@gmail.com writes:
> 
> > i want to make .so from multiple .a's
> 
> On which platform?
> 
> On Linux you can do this:
> 
>   # combine libbar.a and libbaz.a into libfoo.so
>   g++ -fPIC -shared -o libfoo.so -Wl,--whole-archive -lbar -lbaz 
> -Wl,--no-whole-archive
> 
> On non-GNU-ld platforms you have to "explode" the archives:
> 
>   mkdir tmp.$$ && cd tmp.$$ &&
>   ar x ../libbar.a && ar x ../libbaz.a &&
>   g++ -fPIC -shared -o ../libfoo.so *.o && 
>   cd .. && rm -rf tmp.$$
> 
> Cheers,

The only gotcha is whether or not the modules in the lib*.a files where
compiled with -fPIC or not (and whether that matters).

Also: be careful to be sure that if the lib*.a files contain C++ code
that both where built with  the same version of the same C++ compiler.


-- 
Robert Heller             -- 978-544-6933
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