[MPICH2-dev] cross-compilation?

[Gheorghe Almasi]

Oh well, now the secret is out - the attached file will make this 
excessively obvious - BlueGene is a 32 bit machine ;-)



-- George






William Gropp <gropp at mcs.anl.gov>
Sent by: owner-mpich2-dev at mcs.anl.gov
08/04/2005 04:48 PM
 
        To:     Gheorghe Almasi/Watson/IBM at IBMUS
        cc:     David Gingold <david.gingold at sicortex.com>, 
mpich2-dev at mcs.anl.gov, owner-mpich2-dev at mcs.anl.gov
        Subject:        Re: [MPICH2-dev] cross-compilation?


At 11:56 AM 8/4/2005, Gheorghe Almasi wrote:

MPICH2 compiles happily in the BlueGene cross-development environment with 
cross-gcc and cross-g++. Following is an excerpt of our Makefile which 
builds a VPATH build. Most of the options are irrelevant to you, but note 
--host, --target, --build and --with-cross. The file pointed to by 
--with-cross contains data widths for all the data types on the target 
system (configure is obviously unable to determine these because it runs 
on the host system ...) 

Thanks, George.  Could you send along the cross file ($(MPICH2DIR)/cross)) 
or at least the names of the variables that are set in that file? 

Bill


-- George 

        cd ${MPICH2BTBUILD} && \ 
        if [ ! -f Makefile ] ; then \ 
          PATH=${M4INST}/bin:${BLRTS_PATH} LD_LIBRARY_PATH= \ 
          CC="${CC_RTS}" \ 
          GCC="${CC_RTS}" \ 
          CXX="${CXX_RTS}" \ 
          F77="${F77_RTS} ${FFLAGS_RTS}" \ 
          AR="${AR_RTS}" \ 
          LD="${LD_RTS}" \ 
          CFLAGS="${CFLAGS_RTS}" \ 
          LANG="en_US" \ 
          MPILIBNAME="mpich.rts" \ 
          BGLINSTALLDIR=${BGLSYS_ROOT} \ 
          ${MPICH2DIR}/configure \ 
          --prefix=${BGLSYS_ROOT} \ 
          --host=${BLRTS_TARGET} \ 
          --target=${BLRTS_TARGET} \ 
          --build=${BUILD_ALIAS} \ 
          --enable-g=none \ 
          --enable-f90=no \ 
          --with-device=bgl6 \ 
          --with-pmi=bgl6 \ 
          --with-pm=dummy \ 
          --with-mpe=no \ 
          --enable-romio=yes \ 
          --enable-aio=no \ 
          --with-file-system=nfs \ 
          --enable-threads=single \ 
          --with-flibname=mpich.rts \ 
          --with-fwrapname=fmpich.rts \ 
          --with-cxxlibname=cxxmpich.rts \ 
          --with-cross=${MPICH2DIR}/cross \ 
          --enable-f77; \ 
        fi && \ 
        PATH=${BLRTS_PATH} LD_LIBRARY_PATH= LANG="en_US" ${MAKE} && \ 
        PATH=${BLRTS_PATH} LD_LIBRARY_PATH= LANG="en_US" ${MAKE} install 
&& 





David Gingold <david.gingold at sicortex.com> 
Sent by: owner-mpich2-dev at mcs.anl.gov 

08/04/2005 11:14 AM  
        To:        mpich2-dev at mcs.anl.gov 
        cc: 
        Subject:        [MPICH2-dev] cross-compilation? 


We're attempting to get MPICH2 to build in a cross-compile 
environment.  It looks like the distribution has some hooks to make 
cross-compiles work, but they are not fully functional.

Can anyone offer any tips, such as things with the cross-compile that 
are known to need some work?  Has anyone gotten this working with 1.0.x?

We'll be happy to feed back what we learn into the distribution.

-dg

--
David Gingold
Principal Software Engineer
SiCortex
One Clock Tower Place, Suite 100
Maynard MA 01754
(978) 897-0214 x224


William Gropp
http://www.mcs.anl.gov/~gropp
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