Similarly, the macro for the H5F_info_t struct is mapped to either H5F_info1_t or H5F_info2_t.
Such macros are provided to facilitate application compatibility. Their use and mappings are fully described in API Compatibility Macros in HDF5; we urge you to read that document closely.
When both the HDF5 library and the application are built and installed with no specific compatibility flags, H5F_GET_INFO is mapped to the most recent version of the function, currently H5F_GET_INFO2. If the library and/or application is compiled for Release 1.8 emulation, H5F_GET_INFO will be mapped to H5F_GET_INFO1. Since there was no H5F_GET_INFO function in Release 1.6, if the library and/or application is compiled for Release 1.6 emulation, H5F_GET_INFO will be mapped to the most recent version of the function, currently H5F_GET_INFO2. Function-specific flags are available to override these settings on a function-by-function basis when the application is compiled.
Specific compile-time compatibility flags and the resulting mappings are as follows:
The C function H5Fget_info and H5F_info_t renamed to H5Fget_info1 and H5F_info1_t, respectively, and deprecated in this release. The C macro H5Fget_info, the C function H5Fget_info2, and the struct H5F_info2_t introduced in this release.