[mpich-discuss] building 32 bit shmem on 64 bit linux system

[Daniel Fetchinson]

Hi folks,

I'd like to build the 32-bit shmem mpi library because the code I'll
use with mpi only works in 32-bit because of some 32-bit specific
assembly code. The machine is a 64-bit machine with a 64-bit linux
distribution (suse).

I tried configuring mpich-1.2.7p1 in a number of ways:

./configure --with-device=ch_shmem
./configure --with-arch=LINUX --with-device=ch_shmem
./configure --with-arch=LINUX32 --with-device=ch_shmem
./configure --with-arch=i386 --with-device=ch_shmem

with and without setting the following environment variables (in bash):

export CFLAGS=-m32
export FFLAGS=-m32

Configuring went all right but none of the above combinations worked
with 'make' unfortunately :(
The error in 'make' is the following:

/home/fetchinson/mpich-1.2.7p1/bin/mpicc  -o overtake overtake.o test.o
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../x86_64-suse-linux/bin/ld:
skipping incompatible /home/fetchinson/mpich-1.2.7p1/lib/libmpich.a
when searching for -lmpich
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../x86_64-suse-linux/bin/ld:
cannot find -lmpich
collect2: ld returned 1 exit status
make[4]: *** [overtake] Error 1
make[3]: [linktest1] Error 2 (ignored)
Could not link a C program with MPI libraries
make[3]: *** [linktest1] Error 1
make[2]: *** [linktest] Error 2
make[1]: *** [mpi-lib-test] Error 2
make: *** [mpi] Error 2

Which makes me believe that I was not able to convince the
compiler/linker/etc that I really want everything in 32-bit.

What would be the correct way of compiling the whole mpi library to 32-bit?

Cheers,
Daniel