The way I have accomplished this is to:<div><br></div><div>export CC=mpicc</div><div>export CXX=mpicxx</div><div><br></div><div>blow away your build tree and then re-configure re-generate</div><div><br><div class="gmail_quote">
On Wed, May 26, 2010 at 11:38 AM, Michael Wild <span dir="ltr"><<a href="mailto:themiwi@gmail.com">themiwi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im"><br>
On 26. May, 2010, at 17:20 , Marcel Loose wrote:<br>
<br>
> Hi all,<br>
><br>
> I was wondering how one should use find_package(MPI) to properly set the<br>
> C/C++ compiler(s). Normally, you call find_package() after the project()<br>
> command. However, by that time the CMAKE_<LANG>_COMPILER cache variables<br>
> have already been set. Should one FORCE these cache variables to the<br>
> value of MPI_COMPILER?<br>
><br>
> I vaguely remember that setting CMAKE_<LANG>_COMPILER after the<br>
> project() statement was a definite no-no, because all kinds of tests,<br>
> executed by the project() command, are done with the default C/C++<br>
> compilers.<br>
><br>
> Best regards,<br>
> Marcel Loose.<br>
<br>
<br>
</div>Usually mpiCC and cohorts are just wrapper scripts which add appropriate include directories and libraries to the command line. If I remember correctly, FindMPI.cmake detects those and provides them via MPI_COMPILE_FLAGS, MPI_INCLUDE_PATH, MPI_LINK_FLAGS and MPI_LIBRARIES. So, you actually don't need to set the compiler to one of the MPI compiler wrappers.<br>
<font color="#888888"><br>
Michael<br>
</font><div><div></div><div class="h5">_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the CMake FAQ at: <a href="http://www.cmake.org/Wiki/CMake_FAQ" target="_blank">http://www.cmake.org/Wiki/CMake_FAQ</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://www.cmake.org/mailman/listinfo/cmake" target="_blank">http://www.cmake.org/mailman/listinfo/cmake</a><br>
</div></div></blockquote></div><br></div>