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Re: [RFC] sysroot and dynamic libraries
On Thu, 7 Aug 2008, Daniel Jacobowitz wrote:
> On Thu, Aug 07, 2008 at 01:10:57PM +0930, Alan Modra wrote:
> > I have my sysrooted toolchain sitting in /home/alan/toolchain/, so
> > there is /home/alan/toolchain/lib/libc.so.6 and
> > /home/alan/toolchain/lib/ld.so.1. Someone then passes -L/usr/lib
> > -L/lib to gcc, resulting in /lib/libc.so.6 being found rather than my
> > sysrooted version. The DT_NEEDED search finds
> > /home/alan/toolchain/lib/ld.so.1 to meet the libc dependency, but
> > ld.so and libc.so are then from different versions of glibc. Boom.
> >
> > Anyway, killing the -L search is probably using too big a hammer.
> > I'll try something different.
>
> FWIW, we've got a local gcc patch that warns when people do this with
> -I options (based on a configure-time option). Same sort of thing
> ought to work for this.
We have patches for both GCC and the linker. They hardcode lists of
problem directories (/lib, /usr/lib, /usr/X11R6/lib for the linker); I'm
not sure that would be appropriate for FSF binutils.
--
Joseph S. Myers
joseph@codesourcery.com