libc contains TEXTREL with -fPIC (using NPTL)

[Peter S. Mazinger]

On Thu, 18 May 2006, Carmelo Amoroso wrote:

> On 5/17/06, Peter S. Mazinger <ps.m at gmx.net> wrote:
> >
> > On Wed, 17 May 2006, Carmelo Amoroso wrote:
> >
> > > Hi all,
> > > I'm tryng to port the uClibc-nptl branch over sh4 core.
> >
> > that branch is not finished, wait until it has the final version, then you
> > can try to port it sh4
> >
> > Peter
> 
> 
> Hi,
> I understood. but the problem I'm having  seems to be not related  to the
> nptl/TLS implementation.

build uClibc-svn by enabling LINUXTHREADS_OLD and see if you have the same 
problem

> I don't currently have a uClibc-nptl working environment, simply a
> nptl-uClibc built on sh4.

what is that (nptl-uClibc) ? I have seen only an uClibc-nptl branch

> I'm wondering to understand while the TEXTREL flag is appearing in my
> libc.so.0 even if I'm using -fPIC.
> Could be something related to a wrong cross-compiler configuration?
> or the assumptiom about TEXTREL and -fPIC is wrong when we use TLS variable?

As I said you are not allowed (or if you do, you are on your own) if you 
use anything TLS related (new linuxthreads and nptl fall into this 
category)

I know of more causes for TEXTREL
1. binutils failing for sh (for ex. it did for arm until 2.16.1)
2. if you removed -z defs (as proposed some time ago and I said that it 
is the worth you can do), then because you miss some symbol
3. non-PIC aware asm code in the arch specific parts

Download pax-utils from any gentoo site, and run scanelf -q -t -T 
libuClibc-0.9.28.so, that will list you the possible offenders

Peter
> 
> Thanks again for any suggestions,
> 
> Carmelo
> 
> > For what I know I sholud not expect the TEXTREL fls into the dynamic
> > section
> > > building pic code, but it happened.
> > > So the dynamic linker (built with FORCE_SHAREABLE_TEXT_SEGMENTS) stops
> > when
> > > trying to load the libc flagged with TEXTREL.
> > >
> > > What is going wrong? could any one help me?
> > >
> > > If you need further information, I'll add them.
> > >
> > > Thanks,
> > > Carmelo
> > >
> >
> > --
> > Peter S. Mazinger <ps dot m at gmx dot net>           ID: 0xA5F059F2
> > Key fingerprint = 92A4 31E1 56BC 3D5A 2D08  BB6E C389 975E A5F0 59F2
> >
> >
> 

-- 
Peter S. Mazinger <ps dot m at gmx dot net>           ID: 0xA5F059F2
Key fingerprint = 92A4 31E1 56BC 3D5A 2D08  BB6E C389 975E A5F0 59F2