22.1. Tips in case of errors during compilation

1. In case of strange errors during compilation (*e.g. “catastrophic error: could not find …”), try one of these solutions*

   • check your home space is not full ;-)

   • check your paths to compilers and libraries (especially Netcdf library)

   • check that you have the good permissions, and check that your executable files (configure, make…) do are executable

   • check that your shell scripts headers are correct or add them if necessary (e.g. for bash: #!/bin/bash)

   • try to exit/log out the machine, log in back, clean and restart compilation

2. Errors and tips related to netcdf library

   • with netcdf 4.3.3.1: need to add the following compilation flag for all models: -mt_mpi

     The error associated to a missing -mt_mpi flag is of this type: “ /opt/intel//impi/4.1.1.036/intel64/lib/libmpi_mt.so.4: could not read symbols: Bad value “

   • with netcdf 4.1.3: do NOT add -mt_mpi flag

   • with netcdf4, need to place hdf5 library path in your environment:

   export LD_LIBRARY_PATH=YOUR_HDF5_DIR/lib:$LD_LIBRARY_PATH
   

   • with netcdf 4, if you use the library splitted in 2: C part and Fortran part, you need to place links to C library before links to Fortran library and need to put both path in this same order in your LD_LIBRARY_PATH

3. In case of ‘segmentation fault’ error

   • try to allocate more memory with “unlimited -s unlimited”

   • try to launch the compilation as a job (batch) with more allocated memory

4. relocation truncated to fit: R_X86_64_32S against symbol at compilation in sequential mode

   • add option mcmodel=large in compile options (FLAGS) in jobcomp

5. m2c error at the beginning of the compilation

   • the path to OCEAN directory in the jobcomp file may be wrong