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# - Find NetCDF
# Find the native NetCDF includes and library
#
# NETCDF_INCLUDE_DIR - user modifiable choice of where netcdf headers are
# NETCDF_LIBRARY - user modifiable choice of where netcdf libraries are
#
# Your package can require certain interfaces to be FOUND by setting these
#
# NETCDF_CXX - require the C++ interface and link the C++ library
# NETCDF_F77 - require the F77 interface and link the fortran library
# NETCDF_F90 - require the F90 interface and link the fortran library
#
# Or equivalently by calling FindNetCDF with a COMPONENTS argument containing one or
# more of "CXX;F77;F90".
#
# When interfaces are requested the user has access to interface specific hints:
#
# NETCDF_${LANG}_INCLUDE_DIR - where to search for interface header files
# NETCDF_${LANG}_LIBRARY - where to search for interface libraries
#
# This module returns these variables for the rest of the project to use.
#
# NETCDF_FOUND - True if NetCDF found including required interfaces (see below)
# NETCDF_LIBRARIES - All netcdf related libraries.
# NETCDF_INCLUDE_DIRS - All directories to include.
# NETCDF_HAS_INTERFACES - Whether requested interfaces were found or not.
# NETCDF_${LANG}_INCLUDE_DIRS/NETCDF_${LANG}_LIBRARIES - C/C++/F70/F90 only interface
#
# Normal usage would be:
# set (NETCDF_F90 "YES")
# find_package (NetCDF REQUIRED)
# target_link_libraries (uses_everthing ${NETCDF_LIBRARIES})
# target_link_libraries (only_uses_f90 ${NETCDF_F90_LIBRARIES})
#search starting from user editable cache var
if (NETCDF_INCLUDE_DIR AND NETCDF_LIBRARY)
# Already in cache, be silent
set (NETCDF_FIND_QUIETLY TRUE)
endif ()
set(USE_DEFAULT_PATHS "NO_DEFAULT_PATH")
if(NETCDF_USE_DEFAULT_PATHS)
set(USE_DEFAULT_PATHS "")
endif()
find_path (NETCDF_INCLUDE_DIR netcdf.h
HINTS "${NETCDF_DIR}/include")
mark_as_advanced (NETCDF_INCLUDE_DIR)
set (NETCDF_C_INCLUDE_DIRS ${NETCDF_INCLUDE_DIR})
string(REGEX REPLACE "/include/?$" ""
NETCDF_LIB_HINT ${NETCDF_INCLUDE_DIR})
find_library (NETCDF_LIBRARY NAMES netcdf
HINTS "${NETCDF_DIR}" "${NETCDF_LIB_HINT}" PATH_SUFFIXES lib lib64)
mark_as_advanced (NETCDF_LIBRARY)
set (NETCDF_C_LIBRARIES ${NETCDF_LIBRARY})
#start finding requested language components
set (NetCDF_libs "")
set (NetCDF_includes "${NETCDF_INCLUDE_DIR}")
get_filename_component (NetCDF_lib_dirs "${NETCDF_LIBRARY}" PATH)
set (NETCDF_HAS_INTERFACES "YES") # will be set to NO if we're missing any interfaces
macro (NetCDF_check_interface lang header libs)
if (NETCDF_${lang})
#search starting from user modifiable cache var
find_path (NETCDF_${lang}_INCLUDE_DIR NAMES ${header}
HINTS "${NETCDF_INCLUDE_DIR}"
HINTS "${NETCDF_${lang}_ROOT}/include"
${USE_DEFAULT_PATHS})
find_library (NETCDF_${lang}_LIBRARY NAMES ${libs}
HINTS "${NetCDF_lib_dirs}"
HINTS "${NETCDF_${lang}_ROOT}/lib"
${USE_DEFAULT_PATHS})
mark_as_advanced (NETCDF_${lang}_INCLUDE_DIR NETCDF_${lang}_LIBRARY)
#export to internal varS that rest of project can use directly
set (NETCDF_${lang}_LIBRARIES ${NETCDF_${lang}_LIBRARY})
set (NETCDF_${lang}_INCLUDE_DIRS ${NETCDF_${lang}_INCLUDE_DIR})
if (NETCDF_${lang}_INCLUDE_DIR AND NETCDF_${lang}_LIBRARY)
list (APPEND NetCDF_libs ${NETCDF_${lang}_LIBRARY})
list (APPEND NetCDF_includes ${NETCDF_${lang}_INCLUDE_DIR})
else ()
set (NETCDF_HAS_INTERFACES "NO")
message (STATUS "Failed to find NetCDF interface for ${lang}")
endif ()
endif ()
endmacro ()
list (FIND NetCDF_FIND_COMPONENTS "CXX" _nextcomp)
if (_nextcomp GREATER -1)
set (NETCDF_CXX 1)
endif ()
list (FIND NetCDF_FIND_COMPONENTS "F77" _nextcomp)
if (_nextcomp GREATER -1)
set (NETCDF_F77 1)
endif ()
list (FIND NetCDF_FIND_COMPONENTS "F90" _nextcomp)
if (_nextcomp GREATER -1)
set (NETCDF_F90 1)
endif ()
NetCDF_check_interface (CXX netcdfcpp.h netcdf_c++)
NetCDF_check_interface (F77 netcdf.inc netcdff)
NetCDF_check_interface (F90 netcdf.mod netcdff)
#export accumulated results to internal varS that rest of project can depend on
list (APPEND NetCDF_libs "${NETCDF_C_LIBRARIES}")
set (NETCDF_LIBRARIES ${NetCDF_libs})
set (NETCDF_INCLUDE_DIRS ${NetCDF_includes})
# handle the QUIETLY and REQUIRED arguments and set NETCDF_FOUND to TRUE if
# all listed variables are TRUE
include (FindPackageHandleStandardArgs)
find_package_handle_standard_args (NetCDF
DEFAULT_MSG NETCDF_LIBRARIES NETCDF_INCLUDE_DIRS NETCDF_HAS_INTERFACES)
# Copy the results to the output variables and target.
if(NetCDF_FOUND)
if(NOT TARGET NetCDF::NetCDF)
add_library(NetCDF::NetCDF UNKNOWN IMPORTED)
set_target_properties(NetCDF::NetCDF PROPERTIES
IMPORTED_LOCATION "${NETCDF_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${NETCDF_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${NETCDF_LIBRARIES}")
endif()
endif()
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