hdf5

USE flags

• cxx - Build support for C++ (bindings, extra libraries, code generation, ...)
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• examples - Install examples, usually source code
• fortran - Add support for fortran
• hl - Enable high level API (https://support.hdfgroup.org/HDF5/doc/HL/index.html)
• mpi - Add MPI (Message Passing Interface) layer to the apps that support it
• szip - Use the szip compression library
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• threads - Add threads support for various packages. Usually pthreads
• unsupported - Enable unsupported combinations of configuration options
• zlib - Add support for zlib (de)compression

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