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The The --enable-python option enables the python interface and is optional but might be useful if you intend to use/write software to access the GRIB output files. If the make fails because of a missing numpy header file you should add the --disable-numpy option. The --enable-vector option should be used on vector based computers (e.g. NEC). Grib_api will then use a more efficient packing/unpacking method suitable for vector hardware. n.b. there is a bug in the 1.9.18 release that if the --disable-vector option is used, this has the reverse effect of enabling the vector code. See grib_api issue GRIB-269 for more details. |
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grib_api will build both shared and static libraries by default. Shared libraries need to be built if the python interface is used. Some compilers will link to the shared version by default if both are found (e.g. the GNU compiler). To ensure the correct version of grib_api is found (in case several are available on your system), OpenIFS explicitly lists the static library in the FCM configuration files. Alternately, if you prefer to use the shared library, you must ensure that your LD_LIBRARY_PATH variable is set so that 1.9.18 version compiled here is found first. Alternately, the option --disable-shared stops the shared libraries from being generated, only the static libraries are built and will be linked. However, this may prevent other grib api tools working and is not generally recommended. |
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