HDF 1.8.18-pre2 release candidate is available for testing

Hello everyone,

A second pre-release candidate version of HDF5 1.8.18 is available for testing and can be downloaded at the following link:


The HDF5 1.8.18-pre2 pre-release candidate has 1 change from HDF 1.8.18-pre1: the default production mode has been switched from development to production.

If you have time to test this release candidate, we would greatly appreciate it. We try our best to test HDF5 on a variety of platforms and with multiple compilers, but there is always a system that we couldn't test on. Your feedback is critical. In the absence of reported problems that will seriously impair the operation of HDF5 1.8.18 we expect to complete its release next week.

CMake fans will need CMake 3.1 or greater to build HDF5-1.8.18.

The shared library version numbers for lib.so.* files in HDF5-1.8.18-pre2 have been updated according to libtool's versioning system and the changes in symbols from HDF5-1.8.17. The API compatibility report is at this link: https://gamma.hdfgroup.org/ftp/pub/outgoing/hdf5/interface_compatibility_report_hdf5_1.8.18-pre1.

Your reports are invaluable and very much appreciated. Thank you and happy testing!



Larry Knox The HDF Group http://hdfgroup.org
1800 So. Oak St., Suite 203, Champaign IL 61820