STYLE: relocated darwin, mingw information to wiki content
This commit is contained in:
Mark Olesen
Andrew Heather
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baf0cc2a78
commit
5d8e8610c8
@ -118,34 +118,4 @@ your `~/.spack/packages.yaml` file:
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It appears that spack will otherwise ignore any paraview+qt version
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and attempt to install a paraview~qt version instead.
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---------------------------
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Building on Darwin (Mac-OS)
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---------------------------
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Support for Darwin is incomplete, but has been provisioned for.
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The following are typical (as of yet) unresolved issues.
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* Scotch, ptscotch:
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- The librt linkage is required for Linux, but not for Darwin.
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Current resolution:
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Edit or patch
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src/parallel/decompose/ptscotchDecomp/Make/options
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src/parallel/decompose/scotchDecomp/Make/options
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to remove the '-lrt' library
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* CGAL:
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- ThirdParty CGAL will normally need to be compiled without mpfr/gmp.
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This should be done manually prior to building OpenFOAM or other
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ThirdParty. Eg,
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cd $WM_THIRD_PARTY_DIR
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./makeCGAL gmp-none mpfr-none
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The erroneous references to gmp/mpfr library can be directly removed
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from the wmake/rules/General/CGAL, but it is more advisable to
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override them instead in the wmake/rules/darwin64Clang/CGAL file.
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--
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@ -1,126 +0,0 @@
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# Notes for cross-compiling with mingw
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## Host setup
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On openSUSE use the packages for compilation:
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```
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mingw64-cross-binutils
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mingw64-cross-cpp
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mingw64-cross-gcc
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mingw64-cross-gcc-c++
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mingw64-filesystem
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mingw64-headers
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mingw64-runtime
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mingw64-libwinpthread1
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mingw64-winpthreads-devel
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mingw64-libfftw3
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mingw64-fftw3-devel
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```
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This setup is missing `zlib`, so download that manually and compile as a
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*static* library.
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```
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CC="$(wmake -show-c)" CFLAGS="$(wmake -show-cflags)" ./configure --static
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make
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```
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The resulting output files (zconf.h zlib.h) and (libz.a) either need
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to be installed in system locations where OpenFOAM can find them, or if
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they are to be shipped directly with OpenFOAM, they can also be placed
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in the `src/OpenFOAM/include` and `platforms/XXX/lib` paths.
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If the header files are only needed during compilation, it can be a
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fairly convenient hack to simply place copies of them in the
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`src/OSspecific/MSwindows` directory.
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Flex is used in a few locations within OpenFOAM for generating code.
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The generated C++ code requires the `FlexLexer.h` header file, but
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its `/usr/include` location will be ignored by the cross-compiler.
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As another ugly hack, a copy of this file can be made in a standard
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project include location. For example,
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```
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ln -s /usr/include/FlexLexer.h src/OSspecific/MSwindows
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```
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The last point to consider when cross-compiling is the behaviour of
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the OpenFOAM tools used during compilation. These are found under
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`wmake/src`. When these are compiled they will create executables that
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work on the target platform (Windows), but *not* on the host platform.
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The workaround:
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1. Activate the native OpenFOAM environment (Linux with system gcc)
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and use that to compile the build tools
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```
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wmake/src/Allmake
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```
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This can be skipped if you already have an existing OpenFOAM build.
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2. Activate the OpenFOAM for cross-compiling (Linux with mingw)
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and use that to compile the build tools
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```
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wmake/src/Allmake
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```
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3. Copy the contents of the native platform build tools into the
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cross-compilation platform directory. For example,
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```
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cp wmake/platforms/linux64Gcc/* wmake/platforms/linux64Mingw/
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```
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The `wmake/platforms/linux64Mingw/` directory should now contain
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native and cross-compiled tools:
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```
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dirToString dirToString.exe
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wmkdep wmkdep.exe
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wmkdepend wmkdepend.exe
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```
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The native tools are the one that will (automatically) be used
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throughout the balance of the cross-compilation process.
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The settings for cross-compilation are normally defined in the
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`etc/pref.sh` file with contents like this:
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```
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# For mingw cross-compile
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export WM_COMPILER=Mingw
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export WM_MPLIB=MSMPI
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export WM_LABEL_SIZE=32
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# other settings...
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```
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Additional adjustments may be required in some other places. For example
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in `etc/config.sh/FFTW`
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```
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fftw_version=fftw-system
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export FFTW_ARCH_PATH=/usr/x86_64-w64-mingw32/sys-root/mingw
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```
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## Run-time setup
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When using the cross-compiled executables and libraries, the
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corresponding runtime libraries will be required.
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These will need to be copied across from the Linux host system to the
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target machine.
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On openSUSE these runtime libraries are provided by the packages:
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```
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mingw64-libgcc_s_seh1
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mingw64-libstdc++6
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```
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When running, the `WM_PROJECT_DIR` environment must be set.
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OpenFOAM will otherwise not be able to locate its files.
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## Known limitations (2019-05-01)
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- kahip does not build
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- boost should build ok, but no CGAL support (ie, no foamyHexMesh)
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- no ParaView plugin, runTimePostProcessing
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- reacting EulerFoam solvers have too many interdependencies and do
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not yet compile cleanly.
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