Contents
1 Introduction
This is a step by step guide on how to cross-compile OpenFOAM in Linux for Windows, for both 32 and 64 bits architectures (to and from), using the patches available here.
These patches were based on Symscape's "v3" patch for OpenFOAM available here. They differ substantially from that patch, as well as the more recent one available here. The build scripts for mingw were also based on the build-script available on the 1.5.x link.
With this guide and available patches, you should be able to cross-compile the whole OpenFOAM library and applications, using MPICH2 instead of Open MPI for parallel computing. You can cross-compile using mingw32 and/or mingw-w64. These enable you to build OpenFOAM 1.6 for Windows 32 and 64 bit versions, from Linux 32 and 64bit architectures.
Versions these patches apply to:
2 Get OpenFOAM packages
- In your Linux machine, open a terminal window and create the folder $HOME/OpenFOAM.
- Get OpenFOAM-1.6.General.gtgz and ThirdParty-1.6.General.gtgz from the OpenCFD's website and copy/move them to the folder $HOME/OpenFOAM.
- Extract both files, by running in a terminal:
cd $HOME/OpenFOAM tar xzf OpenFOAM-1.6.General.gtgz tar xzf ThirdParty-1.6.General.gtgz
3 Optional: Using a specific gcc version for building the wmake binaries
This is optional, because the current patch will use the system's gcc for building them (more specifically gcc as compiler name).
- Edit $HOME/.bashrc and add the following line to the end of it:
. $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc
NOTE: sometimes the leading dot doesn't work, so use the following instead:source $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc
- You might want to edit $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc and set the Linux architecture correctly, namely WM_ARCH_OPTION to 32 or 64.
- You might want to edit $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc and set the Linux architecture correctly, namely WM_ARCH_OPTION to 32 or 64.
- Two possibilities are now available:
- Use the system's gcc - edit $HOME/OpenFOAM/OpenFOAM-1.6/etc/settings.sh and change compilerInstall=OpenFOAM to compilerInstall=System.
- Use the gcc that comes with the ThirdParty-1.6.General.gtgz package - again, two choices:
- You can compile the gcc by running the following line:
(cd $HOME/OpenFOAM/ThirdParty-1.6 && makeGcc gcc-4.3.3)
- Or by getting the available compiled version for your Linux version ( ThirdParty-1.6.linuxGcc.gtgz or ThirdParty-1.6.linux64Gcc.gtgz from OpenCFD's website).
- You can compile the gcc by running the following line:
- launch a new terminal and run the following line, thus building wmkdep and dirToString:
(cd $HOME/OpenFOAM/OpenFOAM-1.6/wmake/src && make)
4 Applying patches
- Copy/move the PatchesNBatches.tar.gz file into the $HOME/OpenFOAM folder. Then unpack it by running:
tar -xzf PatchesNBatches.tar.gz
- A new folder is created, named pnb. Now to apply the patches, run from the $HOME/OpenFOAM folder:
patch -p0 < pnb/OpenFOAM-1.6_patch patch -p0 < pnb/ThirdParty-1.6_patch
- Still have to do some chmodding, for new scripts to run properly. Run the following lines in the terminal:
chmod 744 $HOME/OpenFOAM/ThirdParty-1.6/build-mingw32 chmod 744 $HOME/OpenFOAM/ThirdParty-1.6/build-mingw-w32 chmod 744 $HOME/OpenFOAM/ThirdParty-1.6/build-mingw-w64 chmod 744 $HOME/OpenFOAM/ThirdParty-1.6/build-mingw-w64-45 chmod 744 $HOME/OpenFOAM/ThirdParty-1.6/makeGcc44 chmod 744 $HOME/OpenFOAM/ThirdParty-1.6/get-mpich2 chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/src/mingwFunctions chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/src/Allclean chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw32 chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw-w32 chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw-w32-prof chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw-w32S chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw-w64 chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw-w64-45 chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw-w64-prof chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/applications/utilities/parallelProcessing/Allwmake chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/bin/tutowin chmod 744 $HOME/OpenFOAM/OpenFOAM-1.6/bin/foamDiff
5 Getting Windows version of MPICH2 into the ThirdParty-1.6 folder in Linux
- There are two ways of getting MPICH2 into your Linux+OpenFOAM set up:
- Use the get-mpich2 script, that requires Wine to be installed. With Wine installed and with msiexec executable from the terminal, then the get-mpich2 script should work. To check whether you have msiexec accessible in the terminal, run:
which msiexec
If it returns the full path to the executable, then it is ready to use. - Copy MPICH2 files from a Windows Installation. Three steps for this part:
- Download and install in Windows the MPICH2, version 1.1.1p1 Win32 IA32 from here. Get and install the 64bit version, if you wish to build OpenFOAM for Windows x64.
- Create the folder ThirdParty-1.6/mpich2-1.1.1p1 in your Linux set up.
- Copy the folders bin, include and lib from the installed version of MPICH2 in Windows, into the folder ThirdParty-1.6/mpich2-1.1.1 in Linux.
- Use the get-mpich2 script, that requires Wine to be installed. With Wine installed and with msiexec executable from the terminal, then the get-mpich2 script should work. To check whether you have msiexec accessible in the terminal, run:
- The Allwmake script at the folder ThirdParty-1.6 will take care of the rest. For now, the tough part is that, this way, you can only build one version of OpenFOAM (32 or 64bit) at a time.
6 Tweaking environment options
- Choose which version you want to use:
- mingw32
- for getting a 32bit version of OpenFOAM, that builds on Linux i?86, using mingw;
- mingw-w32
- for getting a 32bit version of OpenFOAM, that builds on Linux i686 and x86_64, using mingw-w64;
- mingw-w64
- for getting a 64bit version of OpenFOAM, that builds on Linux i686 and x86_64, using mingw-w64;
- sample - <bashrc-version>
- configured for <compiler>, <mingw version>, <MPI option>, <WM_COMPILE_OPTION>, <WM_ARCH_OPTION>
- bashrc-mingw32
- configured for gcc-4.3.3, mingw32, MPI with MPICH2, Opt, DP, 32
- bashrc-mingw-w32
- configured for gcc-4.4.2, mingw-w32, MPI with MPICH2, Opt, DP, 32
- bashrc-mingw-w32-prof
- configured for gcc-4.4.2, mingw-w32, No MPI, Prof, DP, 32
- bashrc-mingw-w32S
- configured for gcc-4.4.2, mingw-w32, MPI with MPICH2, Opt, SP, 32
- bashrc-mingw-w64
- configured for gcc-4.4.2, mingw-w64, MPI with MPICH2, Opt, DP, 64
- bashrc-mingw-w64-prof
- configured for gcc-4.4.2, mingw-w64, No MPI, Prof, DP, 64
- bashrc-mingw-w64-45
- configured for gcc-4.5.0, mingw-w64, MPI with MPICH2, Opt, DP, 64
- After choosing the version you wish to build, edit the file $HOME/.bashrc and add to the end of it, a line analogous to the following line:
. $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw32
NOTE: sometimes the leading dot doesn't work, so use the following instead:
source $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw32
- Before launching a new terminal, edit the picked file $HOME/OpenFOAM/OpenFOAM-1.6/etc/bashrc-mingw version. You have two additional variables that are configurable and non standard to the original OpenFOAM version:
- WM_PSTREAMLINK - this variable allows control over the linking method that is with the Pstream library. Two options are available:
- If set to DONTLINKTOPSTREAM, then depending on the variable WM_MPLIB being set to "NONE" or "MPICH", then OpenFOAM will be statically linked with that version, being able only without MPI capabilities or only to run with MPICH2 installed, respectively.
- If LINKTOPSTREAM, then DLLs of the library Pstream are created, both dummy and MPICH2 versions; this allows you to choose which version to use in Windows, without rebuilding OpenFOAM again, allowing one build to be used in multiple installations.
- WM_GETMPICH2 - this variable controls whether MPICH2 is setup automatically or manually. The two options are:
- If set to GETMPICH2, then wget is used for downloading the MPICH2 installation packages, and Wine will be used to unpack the ".msi" files.
- If DONTGETMPICH2, then the script will assume that the steps at 4.1.2 were taken.
- WM_PSTREAMLINK - this variable allows control over the linking method that is with the Pstream library. Two options are available:
7 Build the cross compiler
- Open a new terminal window or tab, so the edited file $HOME/.bashrc is executed, thus setting up the chosen OpenFOAM development environment (see #Tweaking environment options).
- Now go to the ThirdParty-1.6 folder, in your new terminal:
cd $WM_THIRD_PARTY_DIR
Wyldckat 18:05, 10 November 2009 (UTC)