[vdr] Re: solved: segment faults from osdtelext plugin

[Luca Olivetti <luca@ventoso.org>]

Henning Glawe wrote:
> On Sat, Dec 04, 2004 at 06:55:00PM +0100, Luca Olivetti wrote:
>
> > "--with-tls", so they both are thread safe. The difference between the 
> > versions is that the one under tls is compiled for nptl.
> > I suppose all modern distributions supply thread safe libraries, so the 
> > _r version should not actually be needed.
>
> TLS depends on the CPU: if the cpu doesn't support conditional moves (cmov,
> an optionial 686 family of opcodes), tls doesn't work.
Are you sure? Isn't that a matter of optimization (i686 libraries use 
cmov, i586 don't) unrelated to thread local storage?
> As the passive-coolable VIA Ezra family CPUs (which are used quite often in
> home-brewed STBs, one stands under my tv set ;) ) don't supports cmov, being
> able to run VDR without tls is quite important ;)
Mandrake's glibc spec has a patch to detect these cpus and treat them as 
i586 instead of i686, anyway all of them are compiled with tls:

---[excerpt from the spec file]------------------
# Define TLS architectures
%define tlsarches	%{ix86} x86_64 amd64
[...]
# Build with TLS
%ifarch %{tlsarches}
  TlsFlags="--with-tls"
%else
  TlsFlags="--without-tls"
%endif
-------------------------------------------------

$ rpm --eval %ix86
i386 i486 i586 i686 athlon



Bye

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