Re: HDF5 detection on 64 bit systems

[David Bateman]

Quentin Spencer wrote:

> HDF5 packages were recently released in Fedora Extras, and I'm trying to
> include support for it in the Fedora octave packages. I was looking at
> the build logs and discovered that the i386 and PPC versions correctly
> detected the presence of HDF5, but x86_64 did not. This happened at the
> following line of the configuration:
>
> checking for H5Pcreate in -lhdf5... no
>
> Unfortunately, the builds are submitted in batch mode, and I don't have
> access to config.log to look more carefully at why this test failed, so
> I'm asking here to see if anyone else has run into a similar problem. On
> Fedora 64 bit systems, the library path is /usr/lib64 rather than
> /usr/lib, but the build script tells this to the configure command, and
> it is able to correctly find all other necessary libraries. Is there
> anything about the configure test for HDF5 that is different and may
> ignore this for any reason? Is there a command-line option to configure
> that may help it correctly locate HDF5?
>
> -Quentin
>
>  
Try creating a file conftest.c with the code

char H5Pcreate ();
int main () {
 H5Pcreate ();
 return 0;
}

in it. Then compiling it with

gcc -o conftest -g -O2  conftest.c -L/usr/lib64 -lhdf5  -lz -lm

This should give you the same errors as the config.log file would give 
you. It will also let you experiment with what method you need to detect 
H5Pcreate and also what compile options are needed... If you can't get 
access to a 64bit platform elsewhere to test this, I believe you can do 
it in the context of your subscription to source-forge, though I believe 
there is a check-box in your subscription you need to select to allow 
access to the source-forge shell accounts and compile farm..

Regards
David

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--
David Bateman                                address@hidden
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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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