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Subject: Re: [OMPI users] Can not turn off C++ build.
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2012-11-28 16:17:35

I'll bet we're not disabling the C++ test properly when you disable the C++ bindings. Bummer. I'll file a bug, but I don't know when that will be fixed.

However, this kind of error typically only occurs when your C++ compiler fails altogether (e.g., it's broken). Check the config.log file and see what it says happened for this specific test -- it may well be that your C++ compiler is faulty and needs to be fixed anyway.

On Nov 28, 2012, at 2:19 PM, Ray Sheppard wrote:

> Hello,
> I am trying to build OpenMPI 1.6.3 on an IBM/Intel RHEL-6 cluster.
> I tried building with variations (meaning enable-...=no, disable-,
> changing switch order, etc.) of this:
> ./configure CC=icc CFLAGS="-xT -O2" F77=ifort FFLAGS="-xT -O2"
> FC=ifort FCFLAGS="-xT -O2" --enable-mpi-cxx=no --disable-mpi-cxx-seek
> --enable-static --disable-shared --with-threads=posix
> --prefix=/N/soft/rhel6/openmpi/intel/openmpi-1.6.3
> I first tried using icpc as a CXX compiler but it dies shortly after
> checking the alignment of bool. C++ bindings are not that popular so I
> decided to just turn them off. Now, it just picks up g++ and tries
> building the C++ bindings anyway:
> ** C++ compiler and preprocessor
> checking for g++... g++
> checking whether we are using the GNU C++ compiler... yes
> checking whether g++ accepts -g... yes
> checking dependency style of g++... gcc3
> checking how to run the C++ preprocessor... g++ -E
> checking for the C++ compiler vendor... gnu
> checking if g++ supports -finline-functions... yes
> configure: WARNING: -finline-functions has been added to CXXFLAGS
> checking if C and C++ are link compatible... yes
> checking for C++ optimization flags... -O3 -DNDEBUG -finline-functions
> checking size of bool... 0
> checking alignment of bool... configure: WARNING: *** Problem running
> configure test!
> configure: WARNING: *** See config.log for details.
> configure: error: *** Cannot continue.
> It still errors. I am happy to just kill C++ but it won't. What is
> wrong? Thanks.
> Ray
> --
> Respectfully,
> Ray Sheppard
> RSheppar_at_[hidden]
> 317-274-0016
> Principal Analyst
> Scientific Applications and Performance Tuning
> Research Technologies
> University Information Technological Services
> IUPUI campus
> Indiana University
> My "pithy" saying: Science is the art of translating the world
> into language. Unfortunately, that language is mathematics.
> Bumper sticker wisdom: Make it idiot-proof and they will make a
> better idiot.
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Jeff Squyres
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