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Re: [PLUGIN] dlopen and RTLD_NOW
On Mon, Sep 05, 2011 at 09:51:34AM +0200, Richard Guenther wrote:
> > My issue is, I want to load the same plugin.so in both cc1 and cc1plus, but
> > in the C++ case, I may need to reference some cc1plus specific symbols. I can
> > check whether cc1 or cc1plus loaded the plugin and thus use custom C++
> > symbols only when present. With RTLD_NOW, the plugin fails to load in cc1 as
> > symbol resolution is forced at load time.
> >
> > If RTLD_NOW is removed, dlopen falls back to the RTLD_LAZY mode which fits
> > my need. Moreover, if one can force the complete symbol resolution at load time
> > by defining the environment LD_BIND_NOW variable.
> >
> > So, is RTLD_NOW use justified ?
>
> Not really, neither RTLD_GLOBAL.
That said, relying on lazy binding is terribly bad design.
Jakub