netcdf-c/liblib/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 2018, see the COPYRIGHT file for more information.
# This Makefile assembles the correct libnetcdf based on various
# configure flags. It is assumed that all the relevant convenience
# libraries have been built (e.g. libsrc, libsrc4, libncdap3, libcdmr,
# libncdap4, fortran).
# Put together AM_CPPFLAGS and AM_LDFLAGS.
include $(top_srcdir)/lib_flags.am
# This is our output, the netcdf library the user will install.
lib_LTLIBRARIES = libnetcdf.la
##
# These linker flags specify libtool version info.
# See http://www.gnu.org/software/libtool/manual/libtool.html#Libtool-versioning
# for information regarding incrementing `-version-info`.
##
libnetcdf_la_LDFLAGS = -version-info 19:1:0
libnetcdf_la_CPPFLAGS = ${AM_CPPFLAGS}
libnetcdf_la_LIBADD =
CLEANFILES =
# The v2 API...
if BUILD_V2
libnetcdf_la_LIBADD += ${top_builddir}/libdispatch/libnetcdf2.la
endif # BUILD_V2
# The output library will always include netcdf3 and dispatch
# libraries
libnetcdf_la_LIBADD += ${top_builddir}/libdispatch/libdispatch.la \
${top_builddir}/libsrc/libnetcdf3.la
# + PnetCDF
if USE_PNETCDF
AM_CPPFLAGS += -I${top_srcdir}/libsrcp
libnetcdf_la_LIBADD += ${top_builddir}/libsrcp/libnetcdfp.la
endif # USE_PNETCDF
# + hdf5
if USE_HDF5
AM_CPPFLAGS += -I${top_srcdir}/libhdf5
libnetcdf_la_LIBADD += ${top_builddir}/libhdf5/libnchdf5.la
endif # USE_HDF5
# + hdf4
if USE_HDF4
AM_CPPFLAGS += -I${top_srcdir}/libhdf4
libnetcdf_la_LIBADD += ${top_builddir}/libhdf4/libnchdf4.la
endif # USE_HDF4
# + dap
if ENABLE_DAP
AM_CPPFLAGS += -I${top_srcdir}/libdap2 -I${top_srcdir}/oc
libnetcdf_la_LIBADD += ${top_builddir}/libdap2/libdap2.la
libnetcdf_la_LIBADD += ${top_builddir}/oc2/liboc.la
endif # ENABLE_DAP
if ENABLE_DAP4
AM_CPPFLAGS += -I${top_srcdir}/libdap4
libnetcdf_la_LIBADD += ${top_builddir}/libdap4/libdap4.la
AM_CPPFLAGS += -I${top_srcdir}/libncxml
libnetcdf_la_LIBADD += ${top_builddir}/libncxml/libncxml.la
endif # ENABLE_DAP4
# NetCDF-4 ...
if USE_NETCDF4
AM_CPPFLAGS += -I${top_srcdir}/libsrc4
libnetcdf_la_LIBADD += ${top_builddir}/libsrc4/libnetcdf4.la
endif #USE_NETCDF4
if ENABLE_NCZARR
AM_CPPFLAGS += -I${top_srcdir}/libnczarr
libnetcdf_la_LIBADD += ${top_builddir}/libnczarr/libnczarr.la
if ENABLE_S3_SDK
libnetcdf_la_LIBADD += ${aws_cpp_sdk_core_LIBS} ${aws_cpp_sdk_s3_LIBS}
endif
endif #ENABLE_NCZARR
if ENABLE_PLUGINS
AM_CPPFLAGS += -I${top_srcdir}/libncpoco
libnetcdf_la_LIBADD += ${top_builddir}/libncpoco/libncpoco.la
endif #ENABLE_PLUGINS
if ISCYGWIN
# Force binary mode for file read/write
AM_LDFLAGS += -lbinmode
endif
# We need at least one source file
libnetcdf_la_SOURCES = nc_initialize.c
EXTRA_DIST=CMakeLists.txt