gcc option behaving funny

gcc option behaving funny

[Jan Mannekens]

Hi all,

I'm using gcc version 2.95.3 and when linking I use the -pthread option.

On my Linux-PC I have no problem with that. When I build the same code
on our DEC Alpha XP900, I get:

gcc: unrecognized option '-pthread'

and the build is there. Now when I remove the -pthread option, I of
course get rid of the 'unrecognized option' message, but the linking
fails, not finding/resolving all pthread_...() calls.

I think I missed a configuration option when building the gcc suite.
Anyone who can help me out on this one?

Thanks in advance,

Jan Mannekens

Re: gcc option behaving funny

[Benjamin P Myers]

On Fri, 29 Jun 2001, Jan Mannekens wrote:
> I'm using gcc version 2.95.3 and when linking I use the -pthread option.
> 
> On my Linux-PC I have no problem with that. When I build the same code
> on our DEC Alpha XP900, I get:
> 
> gcc: unrecognized option '-pthread'
> 
> and the build is there. Now when I remove the -pthread option, I of
> course get rid of the 'unrecognized option' message, but the linking
> fails, not finding/resolving all pthread_...() calls.

I couldn't find anything about -pthread in the 2.95 info docs.  Is this
something new, or do you really mean '-lpthread'?

Re: gcc option behaving funny

[Alexandre Oliva]

On Jun 29, 2001, Jan Mannekens <Jan.Mannekens@alcatel.be> wrote:

> I'm using gcc version 2.95.3 and when linking I use the -pthread option.

> On my Linux-PC I have no problem with that. When I build the same code
> on our DEC Alpha XP900

Which operating system is this DEC Alpha running?  If it's GNU/Linux,
it should work just the same.  If it's some other OS, the spelling of
the option may be different.  On some systems, it's -pthreads; on
others, it's -mthread or -mthreads.  On others, you have to
-D_REENTRANT and -lpthread explicitly.  It all depends on the way the
native compiler works; GCC attempts to accept the same options, for
compatibility.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

Re: gcc option behaving funny

[Jan Mannekens]

Problem solved,

In stead of using the -pthread option for linking I use now -threads and
everything seems to be OK.

Now we can start with the run-time problems on DEC. It seems as if
select() is acting rather different on DEC Alpha True64 than on Linux.
But those issues are more likely for another mailing-list.

Kind regards and thanks all for the help,

Jan Mannekens