If you are experiencing problems trying to compile NDPP, first check if the error you are receiving is among the following options.
When NDPP compiles, the first thing it needs to do is compile source in the xml-fortran subdirectory. If you compiled everything with a compiler other than gfortran, performed a make clean, and then tried to make with gfortran, the xml-fortran modules would have been compiled with a different compiler. To fix this, try clearing out all modules and object files with make distclean and then recompiling.
You are probably using a version of the gfortran compiler that is too old. Download and install the latest version of gfortran.
You are probably using a version of the gfortran compiler that is too old. Download and install the latest version of gfortran.
You tried compiling with the Intel Fortran compiler and it was not found on your PATH. If you have the Intel compiler installed, make sure the shell can locate it (this can be tested with which ifort).
A segmentation fault occurs when the program tries to access a variable in memory that was outside the memory allocated for the program. The best way to debug a segmentation fault is to re-compile NDPP with debug options turned on. First go to your ndpp/src directory where NDPP was compiled and type the following commands:
make distclean
make DEBUG=yes
Now when you re-run your problem, it should report exactly where the program failed. If after reading the debug output, you are still unsure why the program failed, send inquiries to the NDPP Users Group.
NDPP needs to know where to find cross section data for each nuclide. This information is provided by the cross_sections.xml file. You need to tell NDPP where to find the cross_sections.xml file either with the cross_sections element in ndpp.xml or with the CROSS_SECTIONS environment variable. It is recommended to add a line in your .profile, .bash_profile, .bashrc (or equivalent) setting the CROSS_SECTIONS environment variable.