how to inhibit libc.so.6 loading with ld 2.22...

how to inhibit libc.so.6 loading with ld 2.22...

[Marcello Stanisci]

Hello everyone,
I'm using ld 2.22, on a debian wheezy system.
I would like to compile an "hello world" program using an alternative
library path, with alternative library names.
Although I can manage to tell the linker where to find those
alternative object names, actually belonging to a modified
version of glibc, it seems very difficult to forbid its (attempt of..)
loading of libc.so.6, which fails because it doesn't exists
on those alternatives directories.

Thanks in advance,
ms

Re: how to inhibit libc.so.6 loading with ld 2.22...

[Mike Frysinger]

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On 04 Mar 2014 17:26, Marcello Stanisci wrote:
> I'm using ld 2.22, on a debian wheezy system.
> I would like to compile an "hello world" program using an alternative
> library path, with alternative library names.
> Although I can manage to tell the linker where to find those
> alternative object names, actually belonging to a modified
> version of glibc, it seems very difficult to forbid its (attempt of..)
> loading of libc.so.6, which fails because it doesn't exists
> on those alternatives directories.

https://sourceware.org/glibc/wiki/Debugging/Loader_Debugging
-mike

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Re: how to inhibit libc.so.6 loading with ld 2.22...

[Andrew Pinski]

On Thu, Mar 5, 2015 at 9:50 PM, Mike Frysinger <vapier@gentoo.org> wrote:
> On 04 Mar 2014 17:26, Marcello Stanisci wrote:
>> I'm using ld 2.22, on a debian wheezy system.
>> I would like to compile an "hello world" program using an alternative
>> library path, with alternative library names.
>> Although I can manage to tell the linker where to find those
>> alternative object names, actually belonging to a modified
>> version of glibc, it seems very difficult to forbid its (attempt of..)
>> loading of libc.so.6, which fails because it doesn't exists
>> on those alternatives directories.
>
> https://sourceware.org/glibc/wiki/Debugging/Loader_Debugging

If you build a new enough gdb.  You can use startup-with-shell
instead.  This is not mentioned here but I used it to debug ld.so
issues where I was setting LD_AUDIT.

Thanks,
Andrew

> -mike