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#
# $Id$
#
# Locate netcdf
#
# This module accepts the following environment variables:
#
# NETCDF_DIR or NETCDF_ROOT - Specify the location of NetCDF
#
# This module defines the following CMake variables:
#
# NETCDF_FOUND - True if libnetcdf is found
# NETCDF_LIBRARY - A variable pointing to the NetCDF library
# NETCDF_INCLUDE_DIR - Where to find the headers
# NETCDF_INCLUDE_DIRS - Where to find the headers
# NETCDF_DEFINITIONS - Extra compiler flags
#=============================================================================
# Inspired by FindGDAL
#
# Distributed under the OSI-approved bsd license (the "License")
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See COPYING-CMAKE-SCRIPTS for more information.
#=============================================================================
# This makes the presumption that you are include netcdf.h like
#
#include "netcdf.h"
if (UNIX AND NOT NETCDF_FOUND)
# Use nc-config to obtain the libraries
find_program (NETCDF_CONFIG nc-config
HINTS
${NETCDF_DIR}
${NETCDF_ROOT}
$ENV{NETCDF_DIR}
$ENV{NETCDF_ROOT}
PATH_SUFFIXES bin
PATHS
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
/usr/local
)
if (NETCDF_CONFIG)
execute_process (COMMAND ${NETCDF_CONFIG} --cflags
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
OUTPUT_VARIABLE NETCDF_CONFIG_CFLAGS)
if (NETCDF_CONFIG_CFLAGS)
string (REGEX MATCHALL "(^| )-I[^ ]+" _netcdf_dashI ${NETCDF_CONFIG_CFLAGS})
string (REGEX REPLACE "(^| )-I" "" _netcdf_includepath "${_netcdf_dashI}")
string (REGEX REPLACE "(^| )-I[^ ]+" "" _netcdf_cflags_other ${NETCDF_CONFIG_CFLAGS})
endif (NETCDF_CONFIG_CFLAGS)
execute_process (COMMAND ${NETCDF_CONFIG} --libs
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE
OUTPUT_VARIABLE NETCDF_CONFIG_LIBS)
if (NETCDF_CONFIG_LIBS)
# Ensure -l is precedeced by whitespace to not match
# '-l' in '-L/usr/lib/x86_64-linux-gnu/hdf5/serial'
string (REGEX MATCHALL "(^| )-l[^ ]+" _netcdf_dashl ${NETCDF_CONFIG_LIBS})
string (REGEX REPLACE "(^| )-l" "" _netcdf_lib "${_netcdf_dashl}")
string (REGEX MATCHALL "(^| )-L[^ ]+" _netcdf_dashL ${NETCDF_CONFIG_LIBS})
string (REGEX REPLACE "(^| )-L" "" _netcdf_libpath "${_netcdf_dashL}")
endif (NETCDF_CONFIG_LIBS)
endif (NETCDF_CONFIG)
if (_netcdf_lib)
list (REMOVE_DUPLICATES _netcdf_lib)
list (REMOVE_ITEM _netcdf_lib netcdf)
endif (_netcdf_lib)
endif (UNIX AND NOT NETCDF_FOUND)
find_path (NETCDF_INCLUDE_DIR netcdf.h
HINTS
${_netcdf_includepath}
${NETCDF_DIR}
${NETCDF_ROOT}
$ENV{NETCDF_DIR}
$ENV{NETCDF_ROOT}
PATH_SUFFIXES
include/netcdf
include/netcdf-4
include/netcdf-3
include
PATHS
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
/usr/local
)
find_library (NETCDF_LIBRARY
NAMES netcdf
HINTS
${_netcdf_libpath}
${NETCDF_DIR}
${NETCDF_ROOT}
$ENV{NETCDF_DIR}
$ENV{NETCDF_ROOT}
PATH_SUFFIXES lib
PATHS
/sw
/opt/local
/opt/csw
/opt
/usr/local
)
# find all libs that nc-config reports
foreach (_extralib ${_netcdf_lib})
find_library (_found_lib_${_extralib}
NAMES ${_extralib}
PATHS ${_netcdf_libpath})
list (APPEND NETCDF_LIBRARY ${_found_lib_${_extralib}})
endforeach (_extralib)
if (NETCDF_LIBRARY AND NETCDF_INCLUDE_DIR AND NOT HAVE_NETCDF4)
# Ensure that NetCDF with version 4 extensions is installed
include (CMakePushCheckState)
include (CheckSymbolExists)
cmake_push_check_state() # save state of CMAKE_REQUIRED_*
set (CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${NETCDF_INCLUDE_DIR})
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${NETCDF_LIBRARY})
set (HAVE_NETCDF4 HAVE_NETCDF4) # to force check_symbol_exists again
check_symbol_exists (nc_def_var_deflate netcdf.h HAVE_NETCDF4)
cmake_pop_check_state() # restore state of CMAKE_REQUIRED_*
if (NOT HAVE_NETCDF4)
message (SEND_ERROR "Library found but netCDF-4/HDF5 format unsupported. Do not configure netCDF-4 with --disable-netcdf-4.")
endif (NOT HAVE_NETCDF4)
endif (NETCDF_LIBRARY AND NETCDF_INCLUDE_DIR AND NOT HAVE_NETCDF4)
include (FindPackageHandleStandardArgs)
find_package_handle_standard_args (NETCDF
DEFAULT_MSG NETCDF_LIBRARY NETCDF_INCLUDE_DIR HAVE_NETCDF4)
set (NETCDF_LIBRARIES ${NETCDF_LIBRARY})
set (NETCDF_INCLUDE_DIRS ${NETCDF_INCLUDE_DIR})
string (REPLACE "-DNDEBUG" "" NETCDF_DEFINITIONS "${_netcdf_cflags_other}")
# vim: textwidth=78 noexpandtab tabstop=2 softtabstop=2 shiftwidth=2
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