Element test driver

For calibration of material parameters, it is useful to use a single element test driver for umat by A. Niemunis. Compilation has been tested with an open source GNU GCC compiler in Linux. The following guide should however be applicable also to GCC compiler under Cygwin distribution in Windows operating system.

As the driver and umat are in different programming languages (FORTRAN and C++ respectively), they should be compiled separatelly and then linked together to create the driver executable. To do so, proceed as follows:

• Compile the C++ umat using command

  gcc -c umat_vec.cpp

• Rename aba_param.inc coming with the driver distribution to ABA_PARAM.INC (In Linux only, due to case-sensitive filenames)

• Compile the driver code using commands

  gfortran -c usolve.f
  gfortran -c incrementalDriver.f

  Note that usolve.f has to be compiled first, as unsymmetric_module.mod needed by incrementalDriver.f is created by compilation of usolve.f

• Link the C++ umat with the driver and create the driver executable:

  gfortran -o incrementalDriver incrementalDriver.o usolve.o -lstdc++ umat_vec.o

  Note that the gcc option -lstdc++ is crucial for linking, as otherwise C++ libraries needed by the C++ umat are not loaded by gfortran.