Re: trying to call HDF5 from ada -- problems with constants

["Brian Catlin" <BrianC@sannas.org.bad>]

"Christopher Broeg" <broeg@astro.uni-jena.de~> wrote in message 
news:cgi4oa$o75$1@fsuj29.rz.uni-jena.de...
> Hi,
>
> I want to use HDF5 data format in my ada code. Since there is no ada binding 
> available (tell me if there is!)

A simple Google search reveals:

"Ada 95 bindings for the NCSA hierarchical data format"
http://portal.acm.org/citation.cfm?id=507581&jmp=references&coll=GUIDE&dl=ACM

I would contact the author (who works at Langley)

 -Brian


> I was just starting to do the c calls manually. Everything was fine until I 
> needed the datatype constants, i.e. for H5Dcreate the type_id. The values of 
> the constants is not visible in the corr. .h files in the example above:
>
> H5Tpublic.h:
> ----------------------
> #define H5T_STD_I32BE         (H5OPEN H5T_STD_I32BE_g)
> H5_DLLVAR hid_t H5T_STD_I32BE_g;
> ----------------------
> and in H5api_adpt.h:
> ----------------------
> #if defined(_HDF5DLL_)
> #pragma warning(disable: 4273) /* Disable the dll linkage warnings */
> #define H5_DLL __declspec(dllexport)
> #define H5_DLLVAR __declspec(dllexport)
> #elif defined(_HDF5USEDLL_)
> #define H5_DLL __declspec(dllimport)
> #define H5_DLLVAR __declspec(dllimport)
> #else
> #define H5_DLL
> #define H5_DLLVAR extern
> #endif /* _HDF5DLL_ */
> ----------------------
>
> The only idea I could come up with was writing one c function for each 
> constant and then linking to that c-library.
> Is there no easier way? Besides, I'm not very good at c so I don't know how to 
> compile libs in c.
>
> I'd appreciate some help.
>
> many thanks,
>
> Chris.
>
> ---
> Chrisopher Broeg
> broeg~@astro.uni-jena.de (remove the ~)