Benjamin,
unfortunatly, the compiler wrappers (mpicc and friends) will be riscv64
binaries.
fwiw, they will (try to) use the cross compilers on the riscv64 machines (!)
but you can configure with the '--enable-script-wrapper-compilers'
option in order to generate scripts
that can be invoked on the x86_64 build host
Cheers,
Gilles
On 12/18/2017 7:10 AM, Benjamin Brock wrote:
Yeah, I just noticed that Open MPI was giving me all x86_64 binaries
with the configuration flags
./configure --host=riscv64-unknown-linux --enable-static
--disable-shared --disable-dlopen
--enable-mca-no-build=patcher-overwrite
--prefix=/home/ubuntu/src/ben-build/openmpi
and was very confused.
I thought that the expected behavior for configure scripts was that
setting --host=[myarch]-linux-gnu will tell the compiler to use the
[myarch]-linux-gnu-[gcc,g++,etc.] compiler when building software that
will run on the host arch. This is what other software I've
encountered (e.g. MPICH) does.
Basically, I want the `orterun` binaries to be compiled with
riscv64-unknown-linux-[gcc,g++] compilers and the `mpi[cc,c++]`
binaries to be compiled with x86_64-linux-gnu-[gcc,g++] and configured
to *use* riscv64-unknown-linux-[gcc,g++] when compiling programs
(because, like `orterun`, programs compiled with `mpi[cc,c++]` will
run on the host arch).
Can I get this by just setting
[CC,CXX]=riscv64-unknown-linux-[gcc,g++], etc.?
Ben
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