Special symbol version for glibc's internal interfaces

[Andreas Jaeger]

Daniel Jacobowitz <drow@mvista.com> writes:

> On Tue, Aug 28, 2001 at 04:30:15PM +0200, Jakub Jelinek wrote:
> > On Tue, Aug 28, 2001 at 04:09:56PM +0200, Andreas Jaeger wrote:
>> > Have a look at the following RPM output:
>> > $ rpm -q --requires bash
>> > /bin/sh  
>> > ld-linux.so.2  
>> > libc.so.6  
>> > libc.so.6(GLIBC_2.0)  
>> > libc.so.6(GLIBC_2.1)  
>> > libc.so.6(GLIBC_2.2)  
>> > libdl.so.2  
>> > libdl.so.2(GLIBC_2.0)  
>> > libdl.so.2(GLIBC_2.1)  
>> > libhistory.so.4  
>> > libncurses.so.5  
>> > libreadline.so.4  
>> 
>> Further more, glibc rpm can be packaged so that it explicitely does not
>> provide *(GLIBC_PRIVATE) symbol versions. This way if somebody built an rpm
>> containing stuff against private interfaces, he could not install it
>> without noticing.
>> 
>> I think GLIBC_PRIV is a good idea.
>
> Once again, I assume I'm missing something obvious, and I'd appreciate
> it if someone would enlighten me - why are any such symbols exported? 
> For pthreads/ld.so?

For other libraries that are part of glibc e.g. linuxthreads, the
dynamic linker ld.so,

Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj