Libraries

ITM Libraries

Libraries developed by the ITM are made available on the ITM platform in standardized directory layout. The root for this directory hierarchy is currently placed at $ITMLIBDIR. However, please do not hard-code this path into your Makefiles and build systems. An environment variable ITMLIBDIR holding this value is automatically defined in the user environment.

The library files are organized as follows:

• $ITMLIBDIR ($ITMLIBDIR)
  • Library name (e.g. itmconstants)
    • Data version (e.g. 4.10a)
      • include - compiler-independent include files (e.g. C header files)
      • lib
        • OBJECTCODE (see below) - compiler-dependent files (*.a, *.so library archive files (e.g. libitmggd.a), *.mod Fortran module files (e.g. itm_types.mod))
        • pythonX.Y - Python modules for Python version X.Y (see below)
        • compiler-independent library files (e.g. libUALLowLevel.a)
      • libdebug - same as lib, but with debug symbols and no optimization

In the hierarchy, different compilers and compiler versions are distinguished with an OBJECTCODE identifier. Currently, the following values are used:

• amd64_pgi_10 - Portland Group, Inc. compilers (C, C++, Fortran), Release 10
• amd64_g95_0.92 - g95 compiler, version 0.92
• amd64_gfortran_4.7 - gfortran compiler, version 4.7

However, not all libraries are built for all compilers depending on compatibility.

The full draft for the ITM standard directory layout is described in this document: ITM standard directory layout.