The CalculiX adapter for preCICE directly modifies the source code of CalculiX and produces an alternative executable
ccx_preCICE. Therefore, we first need to get and (optionally) build CalculiX from source.
CalculiX consists of the solver, called “CCX” and a pre- and postprocessing software with graphical user interface “CGX”.
- The installation procedure of CCX is described in its
src/README.INSTALLfiles, but we also give a summary here.
- We don’t modify CGX, so you can simply get a binary package (if needed, e.g. as a preprocessor in our FSI tutorials)
You don’t need to build the “vanilla” CalculiX before building the adapter. But you do need to get all the dependencies and the source code of CCX.
Additionally, our adapter also depends on yaml-cpp.
These can be found in many distributions as binary packages. For example, in Ubuntu, do:
sudo apt install libarpack2-dev libspooles-dev libyaml-cpp-dev
Building Spooles from source
If you cannot get a binary for Spooles, try these instructions.
Download SPOOLES, e.g:
Extract it in a separate directory
mkdir SPOOLES.2.2 tar zxvf spooles.2.2.tgz -C SPOOLES.2.2 cd SPOOLES.2.2
Edit by hand configuration file
Make.inc to change the compiler version in line 14-15
CC = gcc #CC = /usr/lang-4.0/bin/cc
Now build the library:
Building ARPACK from source
If you cannot get a binary for ARPACK, try these instructions.
Download Arpack and patch:
wget https://www.caam.rice.edu/software/ARPACK/SRC/arpack96.tar.gz wget https://www.caam.rice.edu/software/ARPACK/SRC/patch.tar.gz
Unpack them (they will be unpacked in the newly created directory
tar xzfv arpack96.tar.gz tar xzfv patch.tar.gz cd ARPACK
Edit by hand
ARmake.inc to specify build instructions. The following changes will depend on the directory structure of your system:
- Line 28: Change
home = $(HOME)/ARPACKto directory where ARPACK in extracted
- Line 115: Change
MAKE = /bin/maketo e.g.
MAKE = make(if needed)
- Line 120: Change
SHELL = /bin/shto e.g.
SHELL = sh(if needed)
- Lines 104 - 105: Specify your fortran compiler and compiler flags, e.g. for the gnu systems:
FC = gfortran #FFLAGS = -O -cg89
- Line 35: Modify the platform suffix for the library and remember it, since Calculix adapter makefile will depend on it ( by default it will use suffix INTEL for Linux and MAC for mac systems). For example change
PLAT = SUN4to
PLAT = INTEL
You will probably get linking errors related to ETIME, which you can bypass: In the file
*to the beginning of line 24 ( that comments it out )
* EXTERNAL ETIME
Now we are ready to build the library with
Building yaml-cpp from source
If you cannot get a binary for yaml-cpp, try these instructions.
Get the latest version of yaml-cpp and build it as a shared library. For example:
wget https://github.com/jbeder/yaml-cpp/archive/yaml-cpp-0.6.2.zip unzip yaml-cpp-0.6.2.zip cd yaml-cpp-yaml-cpp-0.6.2 mkdir build cd build cmake -DBUILD_SHARED_LIBS=ON .. make
After building, make sure that you make yaml-cpp discoverable by setting e.g. your
LD_LIBRARY_PATH. You don’t need this for the CalculiX adapter, but you would need it e.g. for the OpenFOAM adapter.
Note: If you use Boost 1.67 or newer, then you also need to install yaml-cpp 0.6 or newer. Similarly, for an older Boost version, you also need an older yaml-cpp. Unfortunately, this is not related to the adapter’s code.
Building CalculiX with the preCICE adapter
Get the source
Once the libraries are installed, you can finally install Calculix with preCICE adapter (adapt the
VERSION in the link, see the beginning of the adapter’s README.md to find out which one you need).
cd ~ wget http://www.dhondt.de/ccx_VERSION.src.tar.bz2 tar xvjf ccx_VERSION.src.tar.bz2
The source code is now in the
~/CalculiX/ccx_VERSION/src directory. The adapter’s
Makefile is looking for CCX in this directory by default, so modify it if needed.
Building the “vanilla” CalculiX (optional)
If you want to build the “vanilla” (i.e. without preCICE) CalculiX, you can now run
make inside the
src/ directory. You may still run into issues with ARPACK in this case, but this is out of scope for our needs, as we use a different Makefile.
Building the modified CalculiX
Continue to the page get the adapter.