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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'
141 lines
5.1 KiB
Plaintext
141 lines
5.1 KiB
Plaintext
# 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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# Define location of execution
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TOPSRCDIR='@abs_top_srcdir@'
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TOPBUILDDIR='@abs_top_builddir@'
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FP_ISCMAKE=@ISCMAKE@
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FP_ISMSVC=@ISMSVC@
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FP_ISCYGWIN=@ISCYGWIN@
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# Feature flags
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FEATURE_HDF5=@HAS_HDF5@
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# Define selected features of the build
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FEATURE_HDF5=@HAS_HDF5@
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FEATURE_S3TESTS=@DO_NCZARR_S3_TESTS@
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FEATURE_NCZARR_ZIP=@DO_NCZARR_ZIP_TESTS@
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FEATURE_FILTERTESTS=@DO_FILTER_TESTS@
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set -e
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# Figure out various locations in the src/build tree.
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# This is relatively fragile code and is essentially
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# specific to netcdf-c. It does, however, have the virtue
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# of isolating all this nonsense into one place.
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# This will get somewhat simplified (I hope) when
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# we move to a separate test_utilities directory
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# This code is intended to provide constants
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# for accessing various objects in the src/build
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# tree(s) across multiple ways of building netcdf-c.
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# Currently, the following build situations are supported.
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# 1. Autoconf with make check: the src and build trees are the same
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# 2. Autoconf with make distcheck: the src and build trees are distinct
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# 3. Cmake on a *nix platform using e.g. gcc:
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# the src and build trees are distinct.
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# 4. Cmake on windows using cygwin or msys.
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# The src and build trees are distinct.
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#
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# For now, an explicit build using the Visual C(++) compiler
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# is not supported. The big issue is the handling of executables
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# and the notion of a VS configuration/build type like Debug or Release.
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# When using VS, executables are placed in a subdirectory of the
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# build directory. That subdirectory is named by the configuration type.
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# Thus one finds ncdump.exe in $top_builddir/ncdump/Debug instead of
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# $top_builddir/ncdump. An additional issue is the extension of an
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# executable: .exe vs nothing. This code attempts to figure out which is used.
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#
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# For possible future fixes, a placeholder is left in place in the
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# following code named VS. If it were set to the build type, then,
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# in theory, this code would work with Visual C. It is disabled for now.
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#
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# The goal, then, of this common code is to set up some useful
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#constants for use in test shell scripts.
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# 1. srcdir - absolute path to the source dir (e.g. ${top_srcdir}/ncgen)
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# 2. top_srcdir - absolute path to the root of the source
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# 3. top_builddir - absolute path to the root of the build directory;
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# may be same as top_srcdir (e.g. #1).
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# 4. builddir - absolute path of th the directory into which generated
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# stuff (.nc, .cdl, etc) is stored.
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# 5. execdir - absolute path of the directory into which executables are
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# placed. For all but the VS case, execdir == builddir.
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#
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# The following are defined to support inter-directory references.
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# 6. NCDUMP - absolute path to the ncdump.exe executable
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# 7. NCCOPY - absolute path to the nccopy.exe executable
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# 8. NCGEN - absolute path to ncgen.exe
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# 9. NCGEN3 - absolute path to ncgen3.exe
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#10. NCPATHCVT - absolute path to ncpathcvt.exe
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# Allow global set -x mechanism for debugging.
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if test "x$SETX" = x1 ; then set -x ; fi
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# We assume that TOPSRCDIR and TOPBUILDDIR are defined
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# At the top of this shell script
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top_srcdir="$TOPSRCDIR"
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top_builddir="$TOPBUILDDIR"
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# Currently not used, but left as a Visual Studio placeholder.
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# VS=Debug
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# srcdir may or may not be defined, but if not, then create it
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if test "x$srcdir" = x ; then
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# we need to figure out our directory
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# pick off the last component as the relative name of this directory
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srcdir=`pwd`
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current=`basename $srcdir`
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srcdir="${top_srcdir}/$current"
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fi
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# We also assume we are executing in builddir
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builddir=`pwd`
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# execdir is an alias for builddir
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execdir="${builddir}"
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# pick off the last component as the relative name of this directory
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thisdir=`basename $srcdir`
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WD=`pwd`
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# Absolutize paths of interest
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cd $srcdir; srcdir=`pwd` ; cd $WD
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cd $top_srcdir; top_srcdir=`pwd` ; cd $WD
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cd $builddir; builddir=`pwd` ; cd $WD
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cd $top_builddir; top_builddir=`pwd` ; cd $WD
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cd $execdir; execdir=`pwd` ; cd $WD
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# If we have cygpath (which only exists under CYGWIN),
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# then try to normalize selected file paths.
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# For sun os
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export srcdir top_srcdir builddir top_builddir execdir
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# Figure out executable extension (probably a better way)
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if test -e "${top_builddir}/ncdump${VS}/ncdump.exe" ; then
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ext=".exe"
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else
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ext=""
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fi
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# We need to locate certain executables (and other things),
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# capture absolute paths, and make visible
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export NCDUMP="${top_builddir}/ncdump${VS}/ncdump${ext}"
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export NCCOPY="${top_builddir}/ncdump${VS}/nccopy${ext}"
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export NCGEN="${top_builddir}/ncgen${VS}/ncgen${ext}"
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export NCGEN3="${top_builddir}/ncgen3${VS}/ncgen3${ext}"
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export NCPATHCVT="${top_builddir}/ncdump${VS}/ncpathcvt${ext}"
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# Temporary hacks (until we have a test_utils directory)
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# to locate certain specific test files
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ncgen3c0="${top_srcdir}/ncgen3/c0.cdl"
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ncgenc0="${top_srcdir}/ncgen/c0.cdl"
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ncgenc04="${top_srcdir}/ncgen/c0_4.cdl"
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# Make sure we are in builddir (not execdir)
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cd $builddir
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