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Possible issues with the Cray systems (using cce or gnu compilers) are related to building shared libraries and linking with supporting netcdf and python libraries.

1. If problems occur, first try using the option "--disable-shared" (configure) or "-DBUILD_SHARED_LIBS=OFF") to only build statically linked libraries.

2. If linking problems still occur, try unloading the Cray ATP module which has been known to cause problems.

module unload atp

3. -llibm link error.

If the following occurs:

/usr/bin/ld: attempted static link of dynamic object `/usr/lib64/libm.so'

set the environment variable CRAYPE_LINK_TYPE=dynamic (or add the compiler option '-dynamic').

4. Missing python library

If this error occurs when compiling _gribapi_swig.so:

/usr/bin/ld: cannot find -lpython

it means the directory path of the python library is not on the linkers list of directories to search.

Make sure the python module is loaded. Then check any PYTHON environment variables set by the module and confirm the location of the libpython (or other version) library.

Set the environment variable LIBRARY_PATH to the correct directory so that the linker can find it:

export LIBRARY_PATH=/home/anaconda/2.2.0-python2/lib64

LIBRARY_PATH is only used at compile/link time. It may also be necessary to add this directory to the LD_LIBRARY_PATH environment variable which is searched for libraries at runtime.

We currently recommend not using a higher optimization level than -O1 with the Intel compiler. Failures have been seen with grib_api and the Intel compiler when compiled with -O2.

Some versions of the Intel compiler (v14.0.x) can produce an error "unknown option -soname" when using 'configure. If this occurs try using "--disable-shared" or try the cmake command instead.