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I think the best way to do that is with an initial cache via the -C
flag to cmake. Then you can set the initial
CMAKE_<LANG>_COMPILER option in a CMake file and start with that
file.<br>
<br>
I currently don't do this, but I should. At the moment I am doing this
wrong by using the CMAKE_TOOLCHAIN_FILE variable and setting up the MPI
wrapper compilers in there. This is currently working for me, but it
is the wrong way of doing it since the toolchain files should really
only be used for cross compiling.<br>
<br>
-- Will<br>
<br>
On 11/05/2009 11:07 AM, <a class="moz-txt-link-abbreviated" href="mailto:bthomas@nexus.hu">bthomas@nexus.hu</a> wrote:
<blockquote
cite="mid:8F14A234BF6446C1AEAE5B235D90A8F5.MAI@pannonline.hu"
type="cite">
<pre wrap="">Dear All,
I am managing a CFD code where wish to set the CMAKE_C_COMPILER and CMAKE_CXX_COMPILER to openmpi
wrappers.
So far i was using cmake 2.4.7 and in the CMakeLists.txt the following lines were working perfectly:
SET(CMAKE_C_COMPILER ${MPI_INSTALL_ROOT}/bin/mpicc )
SET(CMAKE_CXX_COMPILER ${MPI_INSTALL_ROOT}/bin/mpic++ )
Now that I changed to CMake 2.8.0 there is an infinite loop when trying to configure:
name@machine: ./deps/bin/cmake ../
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Configuring done
You have changed variables that require your cache to be deleted.
Configure will be re-run and you may have to reset some variables.
The following variables have changed:
CMAKE_C_COMPILER= /usr/bin/gcc
CMAKE_CXX_COMPILER= /usr/bin/c++
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Configuring done
You have changed variables that require your cache to be deleted.
Configure will be re-run and you may have to reset some variables.
The following variables have changed:
CMAKE_C_COMPILER= /usr/bin/gcc
CMAKE_CXX_COMPILER= /usr/bin/c++
... and enters an infinite loop.
If I set the compilers via command line arguments, its fine.
But for easy-to-compile-by-the-users reason, I would like to set them in the CMakeLists.txt if
possible.
Can somebody help me out how to do this right?
The machine: Ubuntu, openmpi 1.3.3 with system gcc 4.4.1 behind
Thx:
Th
P.S.: I noted a bugfix in CMake 2.6.2 RC 2, may be connected:
"Fix infinite recursion bug with try-compile and change of compilers"
</pre>
<pre wrap="">
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