dolfin team mailing list archive

["Garth N. Wells" <gnw20@xxxxxxxxx>]

On 17 November 2011 07:36, Johan Hake <johan.hake@xxxxxxxxx> wrote:
> On Wednesday November 16 2011 23:12:32 Garth N. Wells wrote:
>> On 17 Nov 2011, at 05:30, Johan Hake <johan.hake@xxxxxxxxx> wrote:
>> > Hello!
>> >
>> > I have problems with the CMake configure script trying to find pastix. It
>> > fails with the following:
>> >
>> > /usr/lib/ccache/gcc     -DCHECK_FUNCTION_EXISTS=pthread_create  -fopenmp
>> > CMakeFiles/cmTryCompileExec.dir/CheckFunctionExists.c.o  -o
>> > cmTryCompileExec - rdynamic -lpthreads
>> > /usr/bin/ld: cannot find -lpthreads
>> > collect2: ld returned 1 exit status
>> > gmake[1]: *** [cmTryCompileExec] Error 1
>> > gmake[1]: Leaving directory `/home/hake/bzr/fenics/dolfin/dolfin-
>> > gpu/build/CMakeFiles/CMakeTmp'
>> > gmake: *** [cmTryCompileExec/fast] Error 2
>> >
>> > Does anyone know why pthreads get added to the the linking? If I remove
>> > -lpthreads from the linkning it passes just fine.
>>
>> Configuring PaStiX is complicated and pthreads is usually required. The
>> PaStiX cake module needs to do some proper testing. It's very primitive at
>> the moment.
>
> Ok, then I suggest we disable it by default.
>

pthread is not added manually anywhere, so its should not be added by
the build system unless it's available on your system. It's most
likely being added as a BLAS flag. Which BLAS are you using?

Garth

> Johan
>
>> Garth
>>
>> > I am on a Natty Ubuntu.
>> >
>> > Johan
>> >
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>



-- 
Garth N. Wells
Department of Engineering, University of Cambridge
http://www.eng.cam.ac.uk/~gnw20