netcdf-c/liblib/CMakeLists.txt
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

198 lines
5.2 KiB
CMake

# Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
# 2015, 2016, 2017, 2018
# University Corporation for Atmospheric Research/Unidata.
# See netcdf-c/COPYRIGHT file for more info.
SET(liblib_LIBS dispatch netcdf3)
#####
# Add target objects/modules based on options.
#####
IF(USE_NETCDF4)
SET(liblib_LIBS ${liblib_LIBS} netcdf4)
ENDIF()
IF(USE_HDF5)
SET(liblib_LIBS ${liblib_LIBS} netcdfhdf5)
ENDIF()
IF(USE_PNETCDF)
SET(liblib_LIBS ${liblib_LIBS} netcdfp)
ENDIF()
IF(USE_HDF4)
SET(liblib_LIBS ${liblib_LIBS} netcdfhdf4)
ENDIF()
IF(ENABLE_DAP2)
SET(liblib_LIBS ${liblib_LIBS} oc2 dap2)
ENDIF()
IF(ENABLE_DAP4)
SET(liblib_LIBS ${liblib_LIBS} dap4)
SET(liblib_LIBS ${liblib_LIBS} ncxml)
ENDIF()
IF(ENABLE_NCZARR)
SET(liblib_LIBS ${liblib_LIBS} nczarr)
ENDIF()
IF(ENABLE_PLUGINS)
SET(liblib_LIBS ${liblib_LIBS} ncpoco)
ENDIF()
FOREACH(LIBS ${liblib_LIBS})
SET(LARGS ${LARGS} $<TARGET_OBJECTS:${LIBS}>)
ENDFOREACH()
ADD_LIBRARY(netcdf nc_initialize.c ${LARGS} )
IF(MPI_C_INCLUDE_PATH)
target_include_directories(netcdf PUBLIC ${MPI_C_INCLUDE_PATH})
ENDIF(MPI_C_INCLUDE_PATH)
IF(MOD_NETCDF_NAME)
SET_TARGET_PROPERTIES(netcdf PROPERTIES LIBRARY_OUTPUT_NAME ${NETCDF_LIB_NAME})
SET_TARGET_PROPERTIES(netcdf PROPERTIES ARCHIVE_OUTPUT_NAME ${NETCDF_LIB_NAME})
SET_TARGET_PROPERTIES(netcdf PROPERTIES RUNTIME_OUTPUT_NAME ${NETCDF_LIB_NAME})
ENDIF()
# Make sure that netcdf.dll path does not include the build configuration
IF(MSVC)
SET_TARGET_PROPERTIES(netcdf PROPERTIES
RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_CURRENT_BINARY_DIR}
RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_CURRENT_BINARY_DIR})
ENDIF()
#####
# Add dependencies required for linking.
#####
SET(TLL_LIBS "")
SET(TLL_LIBS ${TLL_LIBS} ${HAVE_LIBM} ${ZLIB_LIBRARY})
# Add extra dependencies specified via NC_EXTRA_DEPS
SET(TLL_LIBS ${TLL_LIBS} ${EXTRA_DEPS})
IF(ENABLE_BLOSC)
SET(TLL_LIBS ${TLL_LIBS} ${Blosc_LIBRARIES})
ENDIF()
IF(HAVE_LIBDL)
SET(TLL_LIBS ${LIBDL} ${TLL_LIBS})
ENDIF()
IF(USE_HDF5)
IF(NOT MSVC)
# Some version of cmake define HDF5_hdf5_LIBRARY instead of
# HDF5_LIBRARY. Same with HDF5_HL_LIBRARIES
IF(HDF5_hdf5_LIBRARY AND NOT HDF5_C_LIBRARIES)
SET(HDF5_C_LIBRARIES ${HDF5_hdf5_LIBRARY})
ENDIF()
IF(HDF5_hdf5_hl_LIBRARY AND NOT HDF5_HL_LIBRARIES)
SET(HDF5_HL_LIBRARIES ${HDF5_hdf5_hl_LIBRARY})
ENDIF()
# The order of the libraries is important here for static
# builds:
# Make sure that HDF5_C_LIBRARY appears *after*
# HDF5_HL_LIBRARY.
SET(TLL_LIBS ${HDF5_HL_LIBRARIES} ${HDF5_C_LIBRARIES} ${TLL_LIBS} ${SZIP_LIBRARY})
ELSE() # Windows CMake defines HDF5_LIBRARIES.
SET(TLL_LIBS ${HDF5_LIBRARIES} ${TLL_LIBS} ${SZIP_LIBRARY})
ENDIF()
ENDIF()
IF(FOUND_CURL)
SET(TLL_LIBS ${TLL_LIBS} ${CURL_LIBRARY})
ENDIF()
IF(USE_HDF4)
SET(TLL_LIBS ${HDF4_MFHDF_LIB} ${HDF4_DF_LIB} ${TLL_LIBS})
ENDIF()
IF(ENABLE_PNETCDF AND PNETCDF)
SET(TLL_LIBS ${TLL_LIBS} ${PNETCDF})
ENDIF()
IF(ENABLE_NCZARR_ZIP)
SET(TLL_LIBS ${TLL_LIBS} ${Zip_LIBRARIES})
ENDIF()
IF(ENABLE_S3_SDK)
# TARGET_LINK_DIRECTORIES(netcdf PUBLIC ${AWSSDK_LIB_DIR})
TARGET_LINK_LIBRARIES(netcdf ${AWS_LINK_LIBRARIES})
ENDIF()
IF(HAVE_LIBXML2)
SET(TLL_LIBS ${TLL_LIBS} ${LIBXML2_LIBRARIES})
ENDIF()
IF(NOT WIN32)
IF(NOT APPLE)
IF(CMAKE_DL_LIBS)
TARGET_LINK_LIBRARIES(netcdf ${CMAKE_DL_LIBS})
ENDIF()
ENDIF()
ENDIF()
IF(TLL_LIBS)
LIST(REMOVE_DUPLICATES TLL_LIBS)
ENDIF()
TARGET_LINK_LIBRARIES(netcdf ${TLL_LIBS})
SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${TLL_LIBS})
IF(MSVC)
SET_TARGET_PROPERTIES(netcdf PROPERTIES
LINK_FLAGS_DEBUG " /NODEFAULTLIB:MSVCRT"
)
ENDIF()
IF(NOT MSVC)
IF(BUILD_SHARED_LIBS)
SET_TARGET_PROPERTIES(netcdf PROPERTIES LINK_FLAGS -shared)
ENDIF()
ENDIF()
IF(ENABLE_SHARED_LIBRARY_VERSION)
SET_TARGET_PROPERTIES(netcdf PROPERTIES
VERSION ${netCDF_LIB_VERSION}
SOVERSION ${netCDF_SO_VERSION}
)
ENDIF(ENABLE_SHARED_LIBRARY_VERSION)
###
# The INCLUDES directive was introduced in 2.8.12.
# However, 2.8.11 is still the default on some
# popular linux distributions. See
# https://github.com/Unidata/netcdf-c/issues/135
# for more information.
###
IF(${CMAKE_VERSION} VERSION_LESS 2.8.12)
INSTALL(
TARGETS netcdf EXPORT netCDFTargets
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT libraries
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT libraries
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT libraries
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
ELSE()
INSTALL(
TARGETS netcdf EXPORT netCDFTargets
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT libraries
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT libraries
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT libraries
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
ENDIF()
SET(ALL_TLL_LIBS ${TLL_LIBS} PARENT_SCOPE)
SET(NC_LIBS ${NC_LIBS} PARENT_SCOPE)
FILE(GLOB CUR_EXTRA_DIST RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*.h ${CMAKE_CURRENT_SOURCE_DIR}/*.c)
SET(CUR_EXTRA_DIST ${CUR_EXTRA_DIST} CMakeLists.txt Makefile.am)
ADD_EXTRA_DIST("${CUR_EXTRA_DIST}")