gcc the gnu linker and the -z extract option

[Andrew Haley]

eoin wrote:

>      I'm a new poster here. I am porting some Solaris code over to Linux and
> using the GNU compiler and linker. Now I have a "meta library"(creating a
> "master" shared object from mayny shared objects) which creates fine in
> Solaris but in Linux it doesn't create as a meta library - ldd suggests that
> it depends on the libraries which were previously used to produce the meta
> library on solaris.

What should be in this meta library?  Is it all the contents of all the libraries?

>      Looking into this I can see that with every .so we effectively lose the
> identity and so with a metalibrary what we need to do is to "unravel" the
> .sos to produce the meta library.

"Lose the idenitity?"  I don't know what you mean.

>      I do this in Solaris using the -z extract option. I can't see how to do
> this in Linux using the GNU linker.

Compile every .o file with -fpic.  Make them all into archives with ar.
Link all the archives together into a .so.

Andrew.