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Re: mpqc3: FTBFS: Could NOT find MPI

On 2019-03-18 18:27, Andreas Tille wrote:

Control: tags -1 help

Hi,

I stumbled upon bug #924032 which has no response so far.  I tagged
it help and repost here on Debian Science list since there is usually
some competence to solve issues like

-- Detecting Fortran/C Interface
-- Detecting Fortran/C Interface - Found GLOBAL and MODULE mangling
-- Verifying Fortran/CXX Compiler Compatibility
-- Verifying Fortran/CXX Compiler Compatibility - Success
-- Found PAPI: /usr/lib/x86_64-linux-gnu/libpapi.a
-- Found MPI_C: /usr/lib/x86_64-linux-gnu/libmpich.so (found version "3.1") 
-- Could NOT find MPI_CXX (missing: MPI_CXX_WORKS)
-- Found MPI_Fortran: /usr/lib/x86_64-linux-gnu/libmpichfort.so (found
version "3.1")
-- Could NOT find MPI (missing: MPI_CXX_FOUND) (found version "3.1")
CMake Error at external/MPI:36 (message):
  MPI not found
The bug report does not report the arch, which is important information here (please use reportbug!)
The log snippet refers to mpich, but most arches use openmpi by default. So that's a clue.
The full attached log says it's a simple x86_64. Why then is mpich installed? 

All the same, it should be possible to use mpich on amd64.
I think the final clue is "Could NOT find MPI_CXX". It suggests mpicc is not being used, which makes these MPI builds simpler. 
But the log says mpicc is used, -DMPI_C_COMPILER=mpicc
My guess is the C++ compiler needs to be set: -DMPI_CXX_COMPILER=mpic++ (or mpicxx) 

Drew
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