...
--prefix=$(pwd)/myinstall | This specifies where you want the grib_api files to be installed. In our example here, we will put the compiled grib_api libraries in our example directory oifs/grib_api/myinstall. If you are on a shared high performance computer facility, the install path would most likely be somewhere central. If you specify nothing for --prefix, by default grib_api will install in /usr/local. |
--enable-python | Enabling the python interface is recommended as some OpenIFS supplementary software makes use of Python e.g. plotting/analysis. If the make fails because of a missing numpy header file you should add the --disable-numpy option. |
--disable-jpeg | OpenIFS does not need to support JPEG and PNG for data compression. This removes the need to link OpenIFS against the Jasper library (libjasper.a). |
--disable-omp-packing | OpenMP enabled packing is removed as the model needs to have control over OpenMP multithreading. This is usually disabled by default but it's best to enforce it in case the default changes for future releases. |
--disable-vector | Likewise, on vector computer hardware (e.g. NEC), you can enable this option and grib_api will use a more efficient packing/unpacking method suitable for vector machines. |
--enable-pthread | This option ensures that grib_api is thread-safe. Again, this is normally the default but we enforce it here as OpenIFS will call grib_api from parallel threads. |
...