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Description of problem: having openstack repo, from: https://www.rdoproject.org/Quickstart there is a conflict between hdf5 versions which openstack also provides. I was hoping netcdf rpm conditionals can be loosen up: Error: Package: netcdf-4.3.2-4.el7.x86_64 (@epel) Requires: hdf5 = 1.8.12 to maybe: >= ? regards Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Unfortunately not. hdf5 includes a run-time check of the compiled and loaded version of the library and aborts if they do not match. Hence the specific version requirement in hdf5 using code. Perhaps openstack could be persuaded to provide netcdf?
Orion: are you certain about that runtime check? If I install hdf5 from RDO kilo, I do see the conflict when trying to install netcdf from EPEL: Error: Package: netcdf-4.3.2-4.el7.x86_64 (epel) Requires: hdf5 = 1.8.12 Installed: hdf5-1.8.13-7.el7.x86_64 (@openstack-kilo) hdf5 = 1.8.13-7.el7 Available: hdf5-1.8.12-6.el7.x86_64 (epel) hdf5 = 1.8.12-6.el7 However, if I download the package and force install it: # yumdownloader netcdf # rpm -ivh --nodeps netcdf-4.3.2-4.el7.x86_64.rpm It seems to work just fine...at least, I can then install netcdf-devel and then build a sample program: # yum install netcdf-devel # curl -O http://www.unidata.ucar.edu/software/netcdf/examples/programs/simple_xy_wr.c # gcc -o simple_xy_wr simple_xy_wr.c -lnetcdf./simple_xy_wr *** SUCCESS writing example file simple_xy.nc! # ncdump simple_xy.nc netcdf simple_xy { dimensions: x = 6 ; y = 12 ; variables: int data(x, y) ; data: data = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71 ; I'm not all that familiar with netcdf, but it *looks* like it works just fine with the version of hdf5 from RDO.
Looks like you just created a netcdf-3 file which doesn't use HDF5. Pass the NC_NETCDF4 option to nc_create and try again.