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[Bug linuxthreads/12300] [PATCH] RTLD_SINGLE_THREAD_P used unconditionally but only available on ports/NPTL


http://sourceware.org/bugzilla/show_bug.cgi?id=12300

--- Comment #4 from Robert Millan <rmh at gnu dot org> 2010-12-08 19:59:07 UTC ---
(In reply to comment #3)
> The directories I suggested removing were the sysdeps/unix/sysv/linux 
> ones, not the other linuxthreads directories in ports that are nominally 
> applicable to non-Linux targets.  Your patch was also for a 
> sysdeps/unix/sysv/linux directory.

Note that as syscall ABI on kFreeBSD is the same as on Linux, sysdep-cancel.h
can be implemented by #including the Linux version (this is why I'm patching a
sysdeps/unix/sysv/linux directory).

> I don't think ports should be a dumping place for dead code someone thinks 
> might conceivably be useful one day;

The missing definition is needed on mipsel-kfreebsd-gnu. Sorry for not making
this clear the first time.

> I would strongly advise those caring about the other targets to develop 
> proper POSIX threads implementations for them that use whatever interfaces 
> are most appropriate for each kernel (while making sure that all the 
> headers included in generic glibc code present the same interface as the 
> NPTL versions do, to avoid problems with generic code only working with 
> NPTL) rather than relying on long-unmaintained code that does not work 
> well with current libc.  You might be able to use parts of the 
> Linuxthreads code or the NPTL code in such implementations; I don't know.

Yeah, I know. Unfortunately manpower doesn't allow this for now (help is
welcome).

> The CVS repository (:pserver:anoncvs@sources.redhat.com:/cvs/glibc, module 
> linuxthreads) still appears to exist.

Thanks for the pointer.

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