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Added build cross
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‎build_cross/Dockerfile‎

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FROM su2code/build-su2:latest
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ENV LANG C.UTF-8
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RUN apt-get update && apt-get install -y \
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clang \
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cmake \
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patch \
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libssl-dev \
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lzma-dev \
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libxml2-dev \
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libcrypto++ \
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wget \
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mingw-w64
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# Get the osxcross tool
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RUN git clone https://github.com/tpoechtrager/osxcross && cd osxcross
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# Copy the OSX sdk
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COPY MacOSX10.15.sdk.tar.xz /osxcross/tarballs/MacOSX10.15.sdk.tar.xz
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ENV LDFLAGS ""
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# Build OSX cross compiler
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RUN cd osxcross && UNATTENDED=1 ./build.sh
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# Copy and extract Microsoft MPI
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COPY msmpi_v10.1.2.tar.gz /msmpi_v10.1.2.tar.gz
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RUN tar xzf msmpi_v10.1.2.tar.gz
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# Copy hostfiles
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COPY hostfiles /hostfiles
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# Copy the mpich script
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COPY download_compile_mpich.sh /download_compile_mpich.sh
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ENV PATH /osxcross/target/bin:$PATH
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# Compile MPICH for darwin
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RUN sh download_compile_mpich.sh 3.3.2 x86_64-apple-darwin19
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# Compile MPICH for linux
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RUN LDFLAGS=" -static -static-libstdc++ -static-libgcc" sh download_compile_mpich.sh 3.3.2 x86_64-linux-gnu
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# Code file to execute when the docker container starts up (`entrypoint.sh`)
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ENTRYPOINT ["/compileSU2.sh"]

‎build_cross/README.md‎

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# SU2 Cross Compilation Container
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This container is used to build binaries for all three platforms (linux, darwin (MacOS) and windows).
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For Linux and MacOs it uses custom build MPICH libraries using the `x86-64-linux-gnu` or `x86-64-apple-darwin` toolchains (set with the `--host` argument for the `configure` script). See `Dockerfile` and `download_compile_mpich.sh`.
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For Windows the MSMPI library is used.
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MPI is linked statically.
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The toolchains can be used by providing meson with an appropriate hostfile (`--cross-file`) which can be found at `/hostfiles`:
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- `hostfile_windows`
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- `hostfile_windows_mpi`
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- `hostfile_linux`
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- `hostfile_linux_mpi`
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- `hostfile_darwin`
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- `hostfile_darwin_mpi`
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In order for meson to use the correct static MPI libraries, the `-Dcustom-mpi=true` option must be given if any of the `*_mpi` hostfiles is used. Otherwise MPI cannot be found.
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## Creating the MacOS SDK Package ##
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The OSX SDK is created using OSXCROSS: https://github.com/tpoechtrager/osxcross#packaging-the-sdk
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## Preparing and creating MSMPI package ##
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Here you'll find the instructions on how to create libmsmpi.a for the MinGW-w64 cross-compiler to link against for MPI applications, given the free MS-MPI Redistributable Package. Note: this requires a Windows installation
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### Gather MPI distribution from Windows ###
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- Download and install Microsoft MPI (SDK and Setup) from https://www.microsoft.com/en-us/download/details.aspx?id=100593 on a Windows machine
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- Copy the file `C:\Windows\System32\msmpi.dll` to `C:\Program Files (x86)\Microsoft SDKs\MPI\Lib\x64`
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- Transfer the folder `C:\Program Files (x86)\Microsoft SDKs\MPI\` to a Linux machine
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### Create libmsmpi.a on Linux ###
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Make sure to install the mingw32 on your linux machine (Ubuntu packages: `mingw-64`, `mingw-64-tools`).
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Assuming the MSMPI distribution copied over from Windows, in the previous step, is located at `<msmpi-linux-home>` execute the following steps in a terminal:
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- `cd <msmpi-linux-home>/Lib/x64`
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- `gendef msmpi.dll`
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- `x86_64-w64-mingw32-dlltool -d msmpi.def -l libmsmpi.a -D msmpi.dll`
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- Create an archive of folder `<msmpi-linux-home>` named `msmpi_v<version_number>.tar.gz`

‎build_cross/download_compile_mpich.sh‎

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#!/bin/sh
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if [ ! -d "mpich-$1" ]; then
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# Download
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wget http://www.mpich.org/static/downloads/$1/mpich-$1.tar.gz
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# Unpack archive
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tar -xvf mpich-$1.tar.gz
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# Delete archive
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rm mpich-$1.tar.gz
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fi
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cd mpich-$1
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# Configure
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./configure --host=$2 --enable-static --disable-shared --disable-fortran --prefix=/mpich-$2 --disable-opencl
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# Compile and install
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make install -j4
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# clean
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make clean

‎build_cross/hostfiles/hostfile_darwin‎

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[binaries]
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c = '/osxcross/target/bin/o64-clang'
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cpp = '/osxcross/target/bin/o64-clang++'
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ar = '/osxcross/target/bin/x86_64-apple-darwin19-ar'
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strip = '/osxcross/target/bin/x86_64-apple-darwin19-strip'
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pkgconfig = '/osxcross/target/bin/x86-apple-darwin19-pkg-config'
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[host_machine]
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system ='darwin'
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cpu_family = 'x86'
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cpu = 'i386'
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endian = 'little'
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[properties]
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cpp_args = [ '-Wno-inconsistent-missing-override' ]

‎build_cross/hostfiles/hostfile_darwin_mpi‎

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[binaries]
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c = '/osxcross/target/bin/o64-clang'
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cpp = '/osxcross/target/bin/o64-clang++'
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ar = '/osxcross/target/bin/x86_64-apple-darwin19-ar'
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strip = '/osxcross/target/bin/x86_64-apple-darwin19-strip'
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pkgconfig = '/osxcross/target/bin/x86_64-apple-darwin19-pkg-config'
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[host_machine]
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system ='darwin'
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cpu_family = 'x86_64'
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cpu = 'x86_64'
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endian = 'little'
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[properties]
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cpp_link_args = ['-L/mpich-x86_64-apple-darwin19/lib', '-lmpi', '-lpmpi']
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c_link_args = ['-L/mpich-x86_64-apple-darwin19/lib', '-lmpi', '-lpmpi']
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cpp_args = ['-Wno-inconsistent-missing-override', '-I/mpich-x86_64-apple-darwin19/include']
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c_args = ['-I/mpich-x86_64-apple-darwin19/include']

‎build_cross/hostfiles/hostfile_linux‎

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[binaries]
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c = 'x86_64-linux-gnu-gcc'
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cpp = 'x86_64-linux-gnu-g++'
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ar = 'x86_64-linux-gnu-ar'
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strip = 'x86_64-linux-gnu-strip'
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pkgconfig = 'x86_64-linux-gnu-pkg-config'
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[host_machine]
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system ='linux'
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cpu_family = 'x86_64'
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cpu = 'x86_64'
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endian = 'little'
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[properties]
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cpp_link_args = ['-static', '-static-libstdc++']
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‎build_cross/hostfiles/hostfile_linux_mpi‎

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[binaries]
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c = 'x86_64-linux-gnu-gcc'
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cpp = 'x86_64-linux-gnu-g++'
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ar = 'x86_64-linux-gnu-ar'
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strip = 'x86_64-linux-gnu-strip'
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pkgconfig = 'x86_64-linux-gnu-pkg-config'
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[host_machine]
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system ='linux'
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cpu_family = 'x86_64'
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cpu = 'x86_64'
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endian = 'little'
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[properties]
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cpp_link_args = ['-static', '-static-libstdc++', '-static-libgcc', '-L/mpich-x86_64-linux-gnu/lib', '-lmpi', '-lxml2', '-lbacktrace', '-lz', '-lpthread', '-lrt']
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c_link_args = ['-static', '-static-libstdc++', '-static-libgcc', '-L/mpich-x86_64-linux-gnu/lib', '-lmpi', '-lxml2', '-lbacktrace', '-lz', '-lpthread', '-lrt']
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cpp_args = ['-Wno-inconsistent-missing-override', '-I/mpich-x86_64-linux-gnu/include']
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c_args = ['-I/mpich-x86_64-linux-gnu/include']
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‎build_cross/hostfiles/hostfile_windows‎

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[binaries]
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c = 'x86_64-w64-mingw32-gcc'
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cpp = 'x86_64-w64-mingw32-g++'
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ar = 'x86_64-w64-mingw32-ar'
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strip = 'x86_64-w64-mingw32-strip'
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pkgconfig = 'x86_64-w64-mingw32-pkg-config'
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[host_machine]
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system ='windows'
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cpu_family = 'x86_64'
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cpu = 'x86_64'
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endian = 'little'
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[properties]
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cpp_link_args = ['-static', '-static-libstdc++']
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‎build_cross/hostfiles/hostfile_windows_mpi‎

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[binaries]
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c = 'x86_64-w64-mingw32-gcc'
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cpp = 'x86_64-w64-mingw32-g++'
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ar = 'x86_64-w64-mingw32-ar'
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strip = 'x86_64-w64-mingw32-strip'
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pkgconfig = 'x86_64-w64-mingw32-pkg-config'
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[host_machine]
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system ='windows'
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cpu_family = 'x86_64'
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cpu = 'x86_64'
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endian = 'little'
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[properties]
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cpp_link_args = ['-static', '-static-libstdc++', '-L/MSMPI/Lib/x64','-lmsmpi']
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c_link_args = ['-L/MSMPI/Lib/x64','-lmsmpi']
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cpp_args = ['-I/MSMPI/Include/']
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c_args = ['-I/MSMPI/Include/']
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