Re: [Boost-build] Translating mpicxx output into command line args

Subject: Re: [Boost-build] Translating mpicxx output into command line args
From: Vladimir Prus (ghost_at_[hidden])
Date: 2009-11-27 14:54:17

On Friday 27 November 2009 22:38:35 K. Noel Belcourt wrote:

> 
> On Nov 27, 2009, at 12:29 PM, Vladimir Prus wrote:
> 
> > On Friday 27 November 2009 22:20:10 K. Noel Belcourt wrote:
> >
> >> Hi,
> >>
> >> I've attached part of the bjam.log output from nightly trunk tests to
> >> demonstrate a problem with how the build system translates mpicxx -
> >> show output into Boost-build link line arguments.
> >>
> >> [ output from mpicxx -show ]
> >>
> >> <linkflags>-Wl,-rpath <linkflags>-Wl,/home/sntools/extras/mpi/
> >> mpich-1.2.7p1-gcc-4.4.1-64Bit/lib <linkflags>-Wl,-rpath <linkflags>-
> >> Wl,/home/sntools/extras/compilers/gcc-4.4.1/lib64
> >> <linkflags>-Wl,-rpath <linkflags>-Wl,/home/sntools/extras/compilers/
> >> gcc-4.4.1/lib
> >>
> >> The mpicxx output is not correctly translated into link line
> >> arguments by Boost-build.  Here you can see that the above mpicxx -
> >> show output is converted to these invalid link line arguments.
> >>
> >> -Wl,-rpath -Wl,/home/sntools/extras/compilers/gcc-4.4.1/lib -Wl,/ 
> >> home/
> >> sntools/extras/compilers/gcc-4.4.1/lib64 -Wl,/home/sntools/extras/ 
> >> mpi/
> >> mpich-1.2.7p1-gcc-4.4.1-64Bit/lib
> >>
> >> Notice the missing -Wl,-rpath before the second and third library
> >> paths (plus the secondary issue that the library search directories
> >> have been reordered).  A fair number of MPI tests fail because of
> >> this error.  Does anyone know of a clever way to fix this?
> >
> > Does the following help? It should generate a single <linkflags>
> > feature that is more direct.
> 
> Yes, this definitely fixes the link errors I've been seeing.

Great. Checked in to trunk.

- Volodya