Re: [ESPResSo-users] problem fom installing the ESPResSo

[Jean-Noël Grad]

Hello,

Please copy-paste the first block named "command" from the file 
/home/zhrq/espresso-4.0.1/build2/compile_commands.json here so we can 
review which flags CMake is actually using during compilation.

Concerning the MPI_ROOT error message in CMake, this is likely due to 
the policy change introduced in CMake 3.12 
(https://cmake.org/cmake/help/git-stage/policy/CMP0074.html). Espresso 
4.0.1 relies on CMake 3.0, so setting up the environment variable 
MPI_ROOT="/usr/local/mpich2-1.2-install" will not instruct CMake 
versions before 3.12 to use MPI 1.2, instead it might just look for the 
most recent MPI version available. I haven't tried it, but maybe you can 
instruct CMake to use the 1.2 version of MPI by passing the full path of 
your 1.2 mpicc compiler with the -DMPI_C_COMPILER=/path/to/mpicc1.2 flag.

Don't forget to reply to this email by clicking "replying to list" and 
by providing text-based copies of the terminal output instead of 
screenshots, this helps us a lot!

Best regards,
JN

On 4/16/19 8:59 AM, ricky wrote:
> Hello,
>
> I followed your advice and executed the following commands:
>
> mkdir build2
>
> cd build2
>
> cmake3 -D CMAKE_C_COMPILER=/usr/local/bin/gcc -D 
> CMAKE_CXX_COMPILER=/usr/local/bin/g++ -DCMAKE_CXX_FLAGS="-fPIC" ..
>
> make
>
> But the same error occurred:
>
> The reason why I add the option “-D CMAKE_C_COMPILER=/usr/local/bin/gcc 
> -D CMAKE_CXX_COMPILER=/usr/local/bin/g++” in the cmake3 command is 
> because I want to use the gcc-5.4.0.
>
> After cmake3 command, I found something strange.
>
> I have installed mpich2 whose version is 1.2, however, the cmake3 seemed 
> to find the version 2.2. I’m not sure whether this is the reason of the 
> problem.
>
> Thanks a million.
>
> Best regards!
>
> Ricky Zhao