[Omp] Download OMP for Gcc ?

[Kay Diederichs]

Diego Novillo wrote:
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> On 04/09/06 06:10, Michaël MARY wrote:
> 
> 
>>Is it obligatory to purchase something or is OpenMP open source and
>>respecting a GNU Public Licence ?
>>
> 
> Your request is actually off-topic for this list (try
> gcc-help at gcc.gnu.org for GCC questions.
> 
> The answer to your question is no, you don't need to buy any license to
> use GCC's implementation of OpenMP.  However, OpenMP support for GCC has
> not yet been released, it will be released with GCC 4.2.
> 
> If you you want, you could access pre-release snapshots of GCC 4.2 from
> http://gcc.gnu.org/snapshots.html.  To enable OpenMP support, use -fopenmp.
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To expand on Diego's comment, I would like to mention that the GCC 4.1 
compilers in the (recently released) Fedora Core 5 distribution already 
have OpenMP support (backported from 4.2, I think).

So just use FC5 compilers with -fopenmp to get binaries working under 
FC5. If you want to use the binaries compiled on FC5 on a different 
Linux distro, I would advise to link statically. I found that I had to add
-static -L/usr/lib/gcc/i386-redhat-linux/4.1.0 -lgomp -lrt
when linking, if I use -fopenmp

HTH,

Kay
-- 
Kay Diederichs   http://strucbio.biologie.uni-konstanz.de/~kay
email: Kay.Diederichs at uni-konstanz.de  Tel +49 7531 88 4049 Fax 3183
Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz
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