netcdf-c/libdispatch/Makefile.am
Dennis Heimbigner 53464e8963 Allow optional use of libxml2
re: https://github.com/Unidata/netcdf-c/issues/2119

H/T to [Egbert Eich](https://github.com/e4t) and [Bas Couwenberg](https://github.com/sebastic) for this PR.

It is undesirable to make netcdf be dependent on the availability
of libxml2, but it is desirable to allow its use if available.

In order to do this, a wrapper API (include/ncxml.h) was constructed
that supports either ezxml or libxml2 as the implementation.
Additionally, the xml support code was moved to a new directory
netcdf-c/libncxml.

Primary changes:
* Create a new sub-directory named netcdf-c/libncxml to hold all the xml implementation code.
* Move ezxml.c and ezxml.h to libncxml
* Create a wrapper API -- include/ncxml.h
* Create an implementation, ncxml_ezxml.c to support use of ezxml.
* Create an implementation, ncxml_xml2.c to support use of libxml2.
* Add a check for libxml2 in configure.ac and CMakeLists.txt
* Modify libdap to use the wrapper API instead of ezxml directly.

Misc. Other Changes:
* Change include/netcdf_json.h from built source to be part of the distribution.
2021-11-01 22:37:05 -06:00

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Makefile

## This is a automake file, part of Unidata's netCDF package.
# Copyright 2008, see the COPYRIGHT file for more information.
# This Makefile controls the building of the dispatch layer of the
# netCDF library. The dispatch layer decides whether to call the
# netcdf-classic code, netcdf-4 code, nc3 dap code, or nc4 dap
# code. It also contains code that sit above the dispatch layer, like
# the v2 API.
# Put together AM_CPPFLAGS and AM_LDFLAGS.
include $(top_srcdir)/lib_flags.am
# This is our output, the dispatch convenience library.
noinst_LTLIBRARIES = libdispatch.la
libdispatch_la_CPPFLAGS = ${AM_CPPFLAGS}
# The source files.
libdispatch_la_SOURCES = dparallel.c dcopy.c dfile.c ddim.c datt.c \
dattinq.c dattput.c dattget.c derror.c dvar.c dvarget.c dvarput.c \
dvarinq.c dinternal.c ddispatch.c dutf8.c nclog.c dstring.c ncuri.c \
nclist.c ncbytes.c nchashmap.c nctime.c nc.c nclistmgr.c dauth.c \
doffsets.c dpathmgr.c dutil.c dreadonly.c dnotnc4.c dnotnc3.c \
daux.c dinfermodel.c \
dcrc32.c dcrc32.h dcrc64.c ncexhash.c ncxcache.c ncjson.c ds3util.c
# Add the utf8 codebase
libdispatch_la_SOURCES += utf8proc.c utf8proc.h
# The rc code is currently only used by libdap2 and libdap4,
# but in the future, it will be expanded to be used as the
# general .rc file for the netcdf-c library. So, always compile it.
libdispatch_la_SOURCES += drc.c
# Add functions only found in netCDF-4.
# They are always defined, even if they just return an error
libdispatch_la_SOURCES += dgroup.c dvlen.c dcompound.c dtype.c denum.c \
dopaque.c dfilter.c
# Add V2 API convenience library if needed.
if BUILD_V2
noinst_LTLIBRARIES += libnetcdf2.la
libnetcdf2_la_SOURCES = dv2i.c
libnetcdf2_la_CPPFLAGS = ${AM_CPPFLAGS} -DDLL_EXPORT
endif # BUILD_V2
if ENABLE_BYTERANGE
libdispatch_la_SOURCES += dhttp.c
endif # ENABLE_BYTERANGE
if ENABLE_S3_SDK
libdispatch_la_SOURCES += ncs3sdk.cpp awsincludes.h
AM_CXXFLAGS = -std=c++11
endif
EXTRA_DIST=CMakeLists.txt ncsettings.hdr utf8proc_data.c
# Build ncsettings.c as follows:
# 1. copy ncsettings.hdr to ncsettings.c
# 2. append libnetcdf.settings to ncsettings.c after
# processing it as follows:
# 1. convert tabs and cr to blanks
# 2. convert embedded double quote (") to escaped form (\").
# 3. append newline (\n) to each line
# 4. surround each line with double quotes.
# 3. finally, add a semicolon to the end of ncsettings.c
# to complete the string constant.
ncsettings.c: $(top_srcdir)/libnetcdf.settings ncsettings.hdr
rm -f ncsettings.c
cat ncsettings.hdr > ncsettings.c
tr '\t\r' ' ' <${top_srcdir}/libnetcdf.settings | \
sed -e 's/"/\\"/g' | \
sed -e 's/\(.*\)/\"\1\\n\"/' | \
cat >> ncsettings.c
echo ';' >> ncsettings.c
# Show what is needed to insert a new version of ezxml
# primary fix: The original ezxml.[ch] uses '//' comments;
# unpack and replace with '/*..*/'
REPO=https://downloads.sourceforge.net/project/ezxml/
EZXML=ezxml-0.8.6.tar.gz
ezxml::
rm -fr ./ezxml ./ezxml.[ch] ./license.txt
tar -zxf ./${EZXML}
sed -e 's|//\(.*\)|/*\1*/|' <ezxml/ezxml.c >./ezxml.c
sed -e 's|//\(.*\)|/*\1*/|' <ezxml/ezxml.h >./ezxml.h
cp ezxml/license.txt .