mirror of
https://github.com/Unidata/netcdf-c.git
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11fe00ea05
Filter support has three goals: 1. Use the existing HDF5 filter implementations, 2. Allow filter metadata to be stored in the NumCodecs metadata format used by Zarr, 3. Allow filters to be used even when HDF5 is disabled Detailed usage directions are define in docs/filters.md. For now, the existing filter API is left in place. So filters are defined using ''nc_def_var_filter'' using the HDF5 style where the id and parameters are unsigned integers. This is a big change since filters affect many parts of the code. In the following, the terms "compressor" and "filter" and "codec" are generally used synonomously. ### Filter-Related Changes: * In order to support dynamic loading of shared filter libraries, a new library was added in the libncpoco directory; it helps to isolate dynamic loading across multiple platforms. * Provide a json parsing library for use by plugins; this is created by merging libdispatch/ncjson.c with include/ncjson.h. * Add a new _Codecs attribute to allow clients to see what codecs are being used; let ncdump -s print it out. * Provide special headers to help support compilation of HDF5 filters when HDF5 is not enabled: netcdf_filter_hdf5_build.h and netcdf_filter_build.h. * Add a number of new test to test the new nczarr filters. * Let ncgen parse _Codecs attribute, although it is ignored. ### Plugin directory changes: * Add support for the Blosc compressor; this is essential because it is the most common compressor used in Zarr datasets. This also necessitated adding a CMake FindBlosc.cmake file * Add NCZarr support for the big-four filters provided by HDF5: shuffle, fletcher32, deflate (zlib), and szip * Add a Codec defaulter (see docs/filters.md) for the big four filters. * Make plugins work with windows by properly adding __declspec declaration. ### Misc. Non-Filter Changes * Replace most uses of USE_NETCDF4 (deprecated) with USE_HDF5. * Improve support for caching * More fixes for path conversion code * Fix misc. memory leaks * Add new utility -- ncdump/ncpathcvt -- that does more or less the same thing as cygpath. * Add a number of new test to test the non-filter fixes. * Update the parsers * Convert most instances of '#ifdef _MSC_VER' to '#ifdef _WIN32'
88 lines
3.2 KiB
CMake
88 lines
3.2 KiB
CMake
# Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
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# 2015, 2016, 2017, 2018
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# University Corporation for Atmospheric Research/Unidata.
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# See netcdf-c/COPYRIGHT file for more info.
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SET(CMAKE_BUILD_TYPE "")
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FILE(READ H5Znoop.c NOOP_SOURCE)
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FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/H5Znoop1.c "#define NOOP_INSTANCE 1\n")
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FILE(APPEND ${CMAKE_CURRENT_BINARY_DIR}/H5Znoop1.c "${NOOP_SOURCE}")
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SET(h5bzip2_SOURCES blocksort.c huffman.c crctable.c randtable.c compress.c decompress.c bzlib.c H5Zbzip2.c ${NCJ})
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SET(h5misc_SOURCES H5Zmisc.c H5Zutil.c h5misc.h)
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SET(h5noop_SOURCES H5Znoop.c H5Zutil.c h5noop.h)
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SET_SOURCE_FILES_PROPERTIES(H5Znoop.c PROPERTIES COMPILE_OPTIONS -DNOOP_INSTANCE=0)
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SET(h5noop1_SOURCES ${CMAKE_CURRENT_BINARY_DIR}/H5Znoop1.c H5Zutil.c h5noop.h)
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SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/H5Znoop1.c PROPERTIES COMPILE_OPTIONS -DNOOP_INSTANCE=1)
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SET(h5shuffle_SOURCES H5Zshuffle.c)
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SET(h5fletcher32_SOURCES H5Zfletcher32.c H5checksum.c)
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SET(h5deflate_SOURCES H5Zdeflate.c)
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SET(nczmisc_SOURCES NCZmisc.c)
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SET(nczdefaults_SOURCES NCZdefaults.c)
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IF(ENABLE_FILTER_TESTING)
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IF(BUILD_UTILITIES)
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# LDFLAGS = -module -avoid-version -shared -export-dynamic -no-undefined
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SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
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SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG "${CMAKE_CURRENT_BINARY_DIR}")
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SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE "${CMAKE_CURRENT_BINARY_DIR}")
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MACRO(buildplugin TARGET TARGETLIB)
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ADD_LIBRARY(${TARGET} MODULE ${${TARGET}_SOURCES})
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SET_TARGET_PROPERTIES(${TARGET} PROPERTIES LIBRARY_OUTPUT_NAME ${TARGETLIB})
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SET_TARGET_PROPERTIES(${TARGET} PROPERTIES ARCHIVE_OUTPUT_NAME ${TARGETLIB})
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SET_TARGET_PROPERTIES(${TARGET} PROPERTIES RUNTIME_OUTPUT_NAME ${TARGETLIB})
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TARGET_LINK_LIBRARIES(${TARGET} ${ALL_TLL_LIBS};${ARGN})
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IF(MSVC)
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target_compile_options(${TARGET} PRIVATE /Zi)
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# Tell linker to include symbol data
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set_target_properties(${TARGET} PROPERTIES LINK_FLAGS "/INCREMENTAL:NO /DEBUG /OPT:REF /OPT:ICF")
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# Set file name & location
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set_target_properties(${TARGET} PROPERTIES COMPILE_PDB_NAME ${TARGET} COMPILE_PDB_OUTPUT_DIR ${CMAKE_BINARY_DIR})
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ENDIF()
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ENDMACRO()
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# Note we use name h5bzip2 instead of bzip2 to avoid logical
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# target name clash with examples/C/hdf5plugins
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buildplugin(h5bzip2 "h5bzip2")
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SET_TARGET_PROPERTIES(h5bzip2 PROPERTIES OUTPUT_NAME "bzip2")
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buildplugin(h5misc "h5misc")
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buildplugin(h5noop "h5noop")
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buildplugin(h5noop1 "h5noop1")
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buildplugin(h5shuffle "h5shuffle")
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buildplugin(h5fletcher32 "h5fletcher32")
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buildplugin(h5deflate "h5deflate")
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buildplugin(nczmisc "nczmisc")
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buildplugin(nczdefaults "nczdefaults" netcdf)
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IF(ENABLE_BLOSC)
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SET(h5blosc_SOURCES H5Zblosc.c)
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buildplugin(h5blosc "h5blosc" netcdf;${Blosc_LIBRARIES})
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ENDIF()
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IF(ENABLE_SZIP)
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SET(h5szip_SOURCES H5Zszip.c H5Zszip.h)
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buildplugin(h5szip "h5szip" ${Szip_LIBRARIES})
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ENDIF()
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ENDIF(BUILD_UTILITIES)
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ENDIF(ENABLE_FILTER_TESTING)
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# Copy some test files from current source dir to out-of-tree build dir.
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FILE(COPY ${COPY_FILES} DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/)
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IF(MSVC)
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FILE(COPY ${COPY_FILES} DESTINATION ${RUNTIME_OUTPUT_DIRECTORY}/)
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ENDIF()
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