[MPICH2-dev] cross-compilation?

[Gheorghe Almasi]

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 ...)

-- 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



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