Hi Ben,
I believe changing OMPI_DECLSPEC to __declspec(dllexport) inside
functions.h will allow the cxx module to build (and export the
function) but will break any client using (and thus trying to import)
it. OMPI_DECLSPEC should only be defined as __declspec(dllexport)
while compiling the cxx module (say when libmpi_cxx_EXPORTS is defined).
Yes, as long as there are more functions to export, they have to be
defined in that way. I don't see any option for Intel Compiler to manage
this automatically.
BTW, I also noticed that the Intel compiler has issues with the
preprocessor definitions for ompi_info "OMPI_CONFIGURE_DATE=\"03:18 PM
Wed 04/14/2010 \"" and
"OMPI_BUILD_DATE=\"03:18 PM Wed 04/14/2010 \"". The quotes around the
definitions throw it off completely. Is that something that CMake does
or do you instruct CMake to do this? Both the Intel and Microsoft
compiler work correctly without them.
In which project did you see those preprocessor definitions? Because for
me, I don't see them. Actually, they are not used as preprocessors in
the whole solution, but they are only some cached variables in CMake.
Could you please try to do a clean configuration with CMake, and see if
they still exists?
Thanks,
Shiqing
Thanks,
Ben
*From:* users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org]
*On Behalf Of *Shiqing Fan
*Sent:* Thursday, April 15, 2010 1:28 PM
*To:* us...@open-mpi.org
*Cc:* Kuppers, Ben SIEP-PTT/SDRM
*Subject:* Re: [OMPI users] import/export issues on Windows
Hi,
It seems Microsoft C++ compiler could recognize what the code wants to
do, while Intel C++ compiler couldn't. I know a solution for this kind
of problem, but it involves some code base changes, I need some time
to test it. At moment, if you want to use Intel C++ compiler, the
dirty solution is just changing "OMPI_DECLSPEC" in
ompi/mpi/cxx/functions.h to "__declspec(dllexport)". Or you could
switch to use Microsoft compiler only for this libmpi_cxx project.
Thanks,
Shiqing
On 2010-4-15 9:52 AM, ben.kupp...@shell.com
<mailto:ben.kupp...@shell.com> wrote:
Hello,
When I use 1.4.2rc1 I am able build in Visual Studio 2005 (CMake 2.6.4
default settings VS2005 x64)but I get the following warning (among
others):
11>..\..\..\..\..\ompi\mpi\cxx\intercepts.cc(81) : warning C4273:
'MPI::InitializeIntercepts' : inconsistent dll linkage
11> E:\source\openmpi-1.4.1\ompi/mpi/cxx/functions.h(64) : see
previous definition of 'InitializeIntercepts'
When I convert the Visual Studio projects to use the Intel 10.1
compiler (required for our production environment) this warning
becomes an error:
11>E:\source\openmpi-1.4.2rc1\ompi\mpi\cxx\intercepts.cc(80): error: a
function declared "dllimport" may not be defined
11> MPI::InitializeIntercepts()
This issue seems related to
http://www.open-mpi.org/community/lists/users/2010/03/12392.php.
It appears to me that you are trying to use a single symbol to import
from the c module and export from cxx module at the same time.
Any help would be appreciated,
Ben
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High Performance Computing Tel.: +49 711 685 87234
Center Stuttgart (HLRS) Fax.: +49 711 685 65832
Address:Allmandring 30 email:f...@hlrs.de <mailto:f...@hlrs.de>
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--
--------------------------------------------------------------
Shiqing Fan http://www.hlrs.de/people/fan
High Performance Computing Tel.: +49 711 685 87234
Center Stuttgart (HLRS) Fax.: +49 711 685 65832
Address:Allmandring 30 email: f...@hlrs.de
70569 Stuttgart
