Unidata/netcdf-c v4.9.3 on GitHub

Known Issues

Parallel operation using mpich 4.2.0 (the default on Ubuntu 24.04) results in 'unexpected results' when running nc_test4/run_par_test.sh. This can be fixed by removing mpich and associated libraries and development packages and installing mpich 4.2.2 by hand, or by using openmpi provided via apt.

Release Notes

Extend the netcdf API to support programmatic changes to the plugin search path. See Github #3034 for more information.

What's Changed

"Simplify" XGetopt usage by @DennisHeimbigner in #2678
Fix bug in szip handling. by @DennisHeimbigner in #2679
Add documentation for logging by @edwardhartnett in #2677
v4.9.2 Wellspring branch by @WardF in #2660
Combine DAP4 test server fixes, resolve a couple conflicts. by @WardF in #2681
Cleanup DAP4 testing by @DennisHeimbigner in #2555
Fix DAP4 remotetest server by @DennisHeimbigner in #2558
Fix issue #2674 by @uweschulzweida in #2675
Check at nc_open if file appears to be in NCZarr/Zarr format. by @DennisHeimbigner in #2658
Fix a syntax issue in CMakeLists.txt by @WardF in #2693
hdf5open: check for the H5L info structure version directly by @mathstuf in #2695
Improve S3 documentation, testing and support by @DennisHeimbigner in #2686
Fix potential dead store by @ZhipengXue97 in #2644
CI: Test --without-plugin-dir on Cygwin by @DWesl in #2659
Fix handling of CURLOPT_CAINFO and CURLOPT_CAPATH by @DennisHeimbigner in #2690
Adding a workaround for older versions of cmake by @WardF in #2703
Remove obsolete code by @DennisHeimbigner in #2680
Improve performance of the nc_reclaim_data and nc_copy_data functions. by @DennisHeimbigner in #2699
CMakeLists.txt use ON vs yes, indent by @poelmanc in #2663
Fix some dependency conditions between some ncdump tests. by @DennisHeimbigner in #2682
awsincludes: remove executable permissions by @mathstuf in #2689
Fix some problems with Earthdata authorization. by @DennisHeimbigner in #2709
Provide a single option to disable all network access and testing. by @DennisHeimbigner in #2708
Fix building on macOS by @skosukhin in #2710
Update tinyxml and allow its use under OS/X. by @DennisHeimbigner in #2711
Suppress filters on variables with non-fixed-size types. by @DennisHeimbigner in #2716
Remove fortran bootstrap option by @WardF in #2707
Add support for HDF5 transient types by @ZedThree in #2655
Modify PR 2655 to ensure transient types have names. by @DennisHeimbigner in #2724
Fix memory leak by @DennisHeimbigner in #2725
Enable/Disable some plugins at configure time by @WardF in #2722
Add capability to enable/disable compression libraries by @gsjaardema in #2712
Release notes: Minor. Add historical tag, and spell fix. by @Dave-Allured in #2684
Fix potential null dereference by @ZhipengXue97 in #2646
Fix a crash when accessing a corrupted classic file. by @DennisHeimbigner in #2732
Explicitly suppress variable length type compression by @DennisHeimbigner in #2730
Cleanup the handling of cache parameters. by @DennisHeimbigner in #2734
Fix a number of minor bugs by @DennisHeimbigner in #2726
Fix major bug in the NCZarr cache management by @DennisHeimbigner in #2737
Fix --has-quantize in autotools-generated nc-config. by @WardF in #2749
Fix an issue with unescaped paths in the build system by @weiznich in #2756
Mitigate S3 test interference + Unlimited Dimensions in NCZarr by @DennisHeimbigner in #2755
Fix cmake s3 support.wif by @WardF in #2741
CMake: Ensure all libraries link against MPI if needed by @ZedThree in #2758
CMake: Change header in check for HDF5 zlib/szip support by @ZedThree in #2757
Updated static software.html page with reference to met.3d by @WardF in #2760
Revert a change made in d3c2cf2 that is proving confounding in MSYS2 bash by @WardF in #2769
Address Windows and MacOS s3 issues by @WardF in #2759
Fix bug with displaying log messages by @ZedThree in #2767
Add ctest script to CI. by @WardF in #2778
CI: Have nc-autotools use source distribution instead of repository by @DWesl in #2601
Added stanza to workflow actions so that pushed changes cancel tests by @WardF in #2779
netCDFConfig: find HDF5 if needed by @mathstuf in #2751
Cleanup a number of issues. by @DennisHeimbigner in #2763
CMake: Don't add uninstall target and CPack config if not top-level by @ZedThree in #2776
Replace exec_program with execute_process by @WardF in #2784
Fix Proxy problem for DAP2 by @DennisHeimbigner in #2764
Remove stray character in cmake lfs tests for nczarr. by @WardF in #2786
Renamed mmap variable, which conflicts with mmap() function on FreeBSD by @seanm in #2790
Make ncZarr-specific deps and options dependent on ncZarr being enabled. by @WardF in #2793
Fix most float conversion warnings by @ZedThree in #2782
Fixed various UBSan warnings about invalid bit shifting by @seanm in #2787
disable test that depends on ncpathcvt in cmake build w/o utilities by @tbussmann in #2795
Update internal tinyxml2 code to the latest version by @DennisHeimbigner in #2771
Remove the execinfo capability by @DennisHeimbigner in #2789
Fixed various UBSan warnings about working with NULL pointers by @seanm in #2803
Improve fetch performance of DAP4 by @DennisHeimbigner in #2765
Fixed misaligned memory access flagged by UBSan by @seanm in #2800
Tweaking PR to work with Visual Studio by @WardF in #2788
CMake: Use helper libraries for nczarr tests by @ZedThree in #2783
Fixed various UBSan warnings about working with NULL pointers by @seanm in #2802
Fix some important bugs in various files by @DennisHeimbigner in #2813
Removed a use of sprintf that required changing a function signature by @seanm in #2743
sprintf -> snprintf by @seanm in #2691
chore: unset executable flag by @e-kwsm in #2745
Fix nc-config generated by cmake. by @WardF in #2825
Do not compile test program unless required by @magnusuMET in #2761
CMake: Add improvements to MPI support by @johnwparent in #2595
Catching up on PRs by @WardF in #2826
Minor fix to doxygen documentation by @gsjaardema in #2450
Enable compilation with C89 compiler by @gsjaardema in #2379
count argument in H5Sselect_hyperslab by @wkliao in #2296
Changed link to netCDF-Fortran documentation. by @WardF in #2830
Avoid segfault if opening file failed by @rouault in #2427
Add clarification for the meaning of NSB by @rkouznetsov in #2388
Add H5FD_http_finalize function and call on hdf5 finalize by @lostbard in #2827
Reduce warning by changing type of NC_OBJ.id. by @DennisHeimbigner in #2781
Replaced ancient K&R function declarations to be C23 compatible by @seanm in #2801
add new compression to bm_file benchmark by @edwardhartnett in #2821
Fix doxygen warnings by @WardF in #2834
Fix szip linking by @mwestphal in #2833
Silence conversion warnings from malloc arguments by @ZedThree in #2809
Use explicit casts in nc4_convert_type to silence warnings by @ZedThree in #2808
Manage project version with cmake by @K20shores in #2835
Define USE_SZIP variable for nc-config.cmake.in by @islas in #2836
Place dependencies into separate file by @K20shores in #2838
Macros functions by @K20shores in #2842
CMake: Find HDF5 header we can safely include for other checks by @ZedThree in #2762
Rebase #2812 by @WardF in #2844
Silence sign conversion warnings from NClist functions by @ZedThree in #2812
CMake: Add support for UNITY_BUILD by @jschueller in #2839
Fix warnings in NCZarr tests by @ZedThree in #2816
Link against internally defined libraries by @islas in #2837
Fix some variable types. Resolves #2849 by @opoplawski in #2850
Add citation.cff file by @WardF in #2853
Minor -- fix UNset to unset by @gsjaardema in #2856
Update bundled utf8proc to 2.9.0 by @ZedThree in #2857
CMake: Export targets so the build directory can be used directly by @ZedThree in #2774
Modernize Doxygen CSS by @WardF in #2860
Fix Windows export by @WardF in #2861
Silence ncdump warnings by @ZedThree in #2840
Adopt more modern style for doxygen-generated documentation. by @WardF in #2864
Add static build to one-off GitHub Actions testing. by @WardF in #2866
Fixes finding HDF5 header by @Julius-Plehn in #2867
Properly handle missing regions in URLS by @DennisHeimbigner in #2819
fix cmake build with ENABLE_HDF4 and hdf requiring jpeg by @aumuell in #2879
Revert "fix cmake build with ENABLE_HDF4 and hdf requiring jpeg" by @WardF in #2882
Use cmake netCDF with target_* for many options by @K20shores in #2847
Pull out FindPNETCDF CMake module by @ZedThree in #2841
CI: Fix version of HDF5 used in one-off test by @ZedThree in #2885
Fix for H5Literate() callback versioning by @derobins in #2888
Silence conversion warnings in libsrc4 by @ZedThree in #2892
Remove now unused cmake by @K20shores in #2890
Prefix all options with NETCDF_ by @K20shores in #2895
Fix most warnings in dumplib.c by @ZedThree in #2814
Silence most warnings in libhdf5 by @ZedThree in #2874
Silence warnings in oc2 by @ZedThree in #2891
CMake: Add option to always automatically regenerate ncgen source by @ZedThree in #2822
Silence most warnings in libsrc by @ZedThree in #2883
Fix warnings in tests and examples by @ZedThree in #2884
Fix warnings from backwards-loops by @ZedThree in #2899
Modernize CURL in netCDF cmake by @WardF in #2904
Misc clang-tidy fixes, and added a .clang-tidy config file by @seanm in #2875
Rename the vendored strlcat symbol by @weiznich in #2906
Remove superflous check for libcurl by @WardF in #2907
Fix warnings in ncgen3 by @ZedThree in #2900
Add CI for a Windows Runner on Github Actions. by @WardF in #2910
Fix conversion warnings in libdispatch by @ZedThree in #2905
Refactor _FillValue macro by @WardF in #2911
Fix warnings in ncgen by @ZedThree in #2897
Re-introduce targets into netCDFConfig.cmake.in by @WardF in #2912
changes associated with the removal of the Unidata ftp site. by @oxelson in #2915
CMake: Enable plugins on MinGW by @MehdiChinoune in #2914
Modify ncdump to print char-valued variables as utf8. by @DennisHeimbigner in #2921
Honor CMAKE_INSTALL_MANDIR by @WardF in #2922
Convert the ENABLE_XXX options to NETCDF_ENABLE_XXX options for NCZarr by @DennisHeimbigner in #2923
ftp --> resources, part II by @oxelson in #2924
CI: Setup a CMake job for MSYS2/MinGW by @MehdiChinoune in #2917
Fix all warnings in ncdap4 by @ZedThree in #2898
Cleanup various obsolete build issues by @DennisHeimbigner in #2926
Fix duplicate definition when using aws-sdk-cpp. by @DennisHeimbigner in #2928
Fix a few issues related to detection of libhdf4. by @WardF in #2933
Cleanup handling of NETCDF_ENABLE_SET_LOG_LEVEL and NETCDF_ENABLE_SET_LOG_LEVEL_FUNC by @DennisHeimbigner in #2931
Add compiler flag to fix infinities issue with intel compilers. by @WardF in #2935
Fix some warnings in cmake by @DennisHeimbigner in #2940
Clean up some inconsistencies in filter documentation by @gsjaardema in #2943
Different method for checking HDF5 version requirement by @gsjaardema in #2942
Fix ordering in CMakeLists.txt by @gsjaardema in #2941
Fix cmake-based libnetcdf.settings.in by @WardF in #2944
CI: Add Cygwin CMake run by @DWesl in #2930
Convert NCzarr meta-data to use only Zarr attributes by @DennisHeimbigner in #2936
Fix: CMAKE_MODULE_PATH contents is being overriden with -D contents, not merged with by @gorloffslava in #2946
Propegate change to metadata and use of anonymous dimensions to NCZarr test by @WardF in #2949
S3 Mode url reconstruction defaults to wrong server type by @mannreis in #2947
Fix most warnings in libdap2 by @ZedThree in #2887
Check if HDF5 "file" is a DAOS object by @brtnfld in #2021
Add stanza for Release Candidate 1 in Release Notes by @WardF in #2934
Provide Documentation for the .rc File Mechanism and API by @DennisHeimbigner in #2956
Now use H5Literate2() instead of H5Literate() when its available by @edwardhartnett in #2958
Some debugging output was left enabled by accident. by @DennisHeimbigner in #2970
fix ncuriparse error,Correctly remove leading and trailing whitespace by @ShawayL in #2971
add autotools build instructions, add parallel I/O build and plugin info to CMake build document by @edwardhartnett in #2964
Expand logic around H5Literate2 data structure use. by @WardF in #2977
fixed --with-plugin-dir option to match cmake behavior by @edwardhartnett in #2973
updated README with install documentation by @edwardhartnett in #2975
added NETCDF_MPIEXEC option to CMake by @edwardhartnett in #2979
Fix bug in run_newformat.sh by @DennisHeimbigner in #2978
Take into account that attach_dimscales can fail when dimensions and variables are named inconsistently by @Alexander-Barth in #2968
Add zstd test and fix plugin build for CMake/Cygwin by @edwardhartnett in #2985
fixed message commands in CMakeLists.txt, and ncdump dependency problems for tst_nccopy4 in CMake build by @edwardhartnett in #2983
added documentation for start/count/stride mandating same size arrays as data variable by @edwardhartnett in #2981
[S3] Parse AWS configuration with support for profile section by @mannreis in #2969
Clean up some - vs _ in some comments by @gsjaardema in #2988
added documentation about reading an unknown netCDF/HDF5 file in tutorial, and some other documentation fixes by @edwardhartnett in #2986
Add two missing includes by @weiznich in #2991
turned on some commented out test code by @edwardhartnett in #2993
now install m4 on macos in CI by @edwardhartnett in #2998
Bump incorrect minimum HDF5 version to 1.8.15. by @WardF in #3009
fixed some autoreconf warnings by @edwardhartnett in #3008
adding more zstd testing by @edwardhartnett in #2996
Bump minimum required version of hdf5 in CMakeLists.txt by @WardF in #3011
H5FDunregister plus tests by @WardF in #3014
test to catch the HDF5 H5FDUnregister() problem... by @edwardhartnett in #3012
Address ordering issue with HTTP VFD, H5FDunregister by @WardF in #3013
parallel zstd test which works for cmake and autotools by @edwardhartnett in #3005
HDF5 testing for parallel I/O including zstd (when present) by @edwardhartnett in #3002
Check for libcurl should only happen if DAP and/or ncZarr are enabled. by @WardF in #3018
Added information re: mpich version 4.2.0 and related 'error' messages. by @WardF in #3023
Add legacy macro option by @WardF in #3030
Fix in support of #3007 by @WardF in #3035
If libZstd isn't found, turn off netcdf_enable_filter_zstd by @WardF in #3036
Modify nc-config --libs and --static arguments by @WardF in #3037
Fix failing building with custom libzip by @mannreis in #3040
Cleanup the blosc testing in nc_test4 and nczarr_test. by @DennisHeimbigner in #3046
Replace PR #3046 by @DennisHeimbigner in #3047
fixing some autoconf problems by @edwardhartnett in #3022
autoconf cleanup by @edwardhartnett in #3019
Extend the netcdf API to support programmatic changes to the plugin search path by @DennisHeimbigner in #3034
Update nc-config in support of changes made in #3034 by @WardF in #3049
Various clang warning fixes by @seanm in #3050
Quick warning fix plugin/CMakeLists.txt by @mannreis in #3053
Simplify FORTRAN access to the new plugin path mechanism by @DennisHeimbigner in #3058
CMAKE: Address #3055 - install plugins filters by @mannreis in #3056
v4.9.3-rc2 wellspring changes by @WardF in #3052
Update upload-artifact/download-artifact for github actions by @WardF in #3065
Fix out-of-tree builds generating netcdf_json.h and netcdf_proplist.h by @opoplawski in #3060
Update error code list. by @WardF in #3073
Capture ac-based log artifacts by @WardF in #3074
Clean up a couple small things while I'm looking at them. by @WardF in #3076
Update default_chunk_cache_size by @WardF in #3077
Restore missing --has-nc4 by @WardF in #3082

New Contributors

@uweschulzweida made their first contribution in #2675
@ZhipengXue97 made their first contribution in #2644
@poelmanc made their first contribution in #2663
@weiznich made their first contribution in #2756
@tbussmann made their first contribution in #2795
@e-kwsm made their first contribution in #2745
@johnwparent made their first contribution in #2595
@lostbard made their first contribution in #2827
@K20shores made their first contribution in #2835
@islas made their first contribution in #2836
@Julius-Plehn made their first contribution in #2867
@aumuell made their first contribution in #2879
@derobins made their first contribution in #2888
@MehdiChinoune made their first contribution in #2914
@gorloffslava made their first contribution in #2946
@mannreis made their first contribution in #2947
@ShawayL made their first contribution in #2971

Full Changelog: v4.9.2...tmp-tag