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Re: Octave/HDF5 library/header mismatch

On 23/06/2016 01:11, Gavin King wrote:

On 21/06/2016 9:03 p.m., Marco Atzeri wrote:
On 21/06/2016 06:20, Gavin King wrote:

Reverting the package libhdf5_10 from the current version 1.8.17-1 to
the previous version 1.8.16-1 means that octave 4.0.1-1 can save the

So: workaround: revert libhdf5_10 to 1.8.16-1. Presumably, the current
version of octave was compiled at an inopportune point; I don't think
this is something that I can remedy myself, is it?

the official workaround is mentioned on the warning message

"You can, at your own risk, disable this warning by setting the
environment variable 'HDF5_DISABLE_VERSION_CHECK' to a value of '1'.
Setting it to 2 or higher will suppress the warning messages totally.
Headers are 1.8.16, library is 1.8.17"

so if you use, before running octave


you will still see the warning but the action will be completed


will suppress also the warning.

That is slightly scary, since the warning says "Data corruption or
segmentation faults may occur if the application continues." Segfaults
aside, the prospect of data corruption is unpleasant.

I agree, but I suspect that the risk is strongly exagerated
in the warning.
hdf5 have a very poor policy on the matter.

I think this is the correct place to report this to; it isn't a problem
per se with the individual programs, but with the way they're packed
together. I think. Do correct me if I am wrong; I'm a bit new to this
whole business.

It is the right place.
This problem is clearly a hdf5 upstream problem and a questionable
design choice.

I am following with them

Thanks for looking further into it, and for you advice. I'll follow this
progress with interest, since I use octave and cygwin rather extensively.

Nice to see I am not the only one using my packages.

As soon next netcdf is out, I will rebuild also octave
so that both are built with 1.8.17.



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