cdo.cmake

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# Copyright (c) 2020 - 2024 David Guibert
# Copyright (c) 2024 - 2025 Niclas Schroeter
# Copyright (c) 2024 - 2025 Antoine Morvan
# All rights reserved.
#
# SPDX-License-Identifier: Apache-2.0
 
set_property(GLOBAL PROPERTY cdo_can_use_system TRUE)
set_property(GLOBAL PROPERTY cdo_depends szip eccodes netcdf)
 
set(cdo_configure_args "" CACHE STRING "Custom configure arguments for cdo")
set(cdo_build_args "" CACHE STRING "Custom Make arguments for cdo")
 
if(cdo_enabled)
  if(USE_SYSTEM_cdo)
    message(STATUS "CDO: enabled (system installed)")
    find_program(CDO_PROGRAM cdo REQUIRED)
    get_filename_component(CDO_BIN_DIR "${CDO_PROGRAM}" DIRECTORY)
    set_if_not_present(ENV{PATH} "$ENV{PATH}" "${CDO_BIN_DIR}")
  else()
    message(STATUS "CDO: enabled (internally built)")
 
    ExternalProject_Data_Add(
      cdo
      DEPENDS SZIP::SZIP eccodes netcdf::C ${cdo_revision}
      PATCH_COMMAND ${Patch_EXECUTABLE} -p1 -i
              ${CMAKE_SOURCE_DIR}/projects/cdo.patch
      CONFIGURE_COMMAND env
        CPATH=$ENV{CPATH} C_INCLUDE_PATH=$ENV{C_INCLUDE_PATH}
        LIBRARY_PATH=$ENV{LIBRARY_PATH}
        LD_LIBRARY_PATH=$ENV{LD_LIBRARY_PATH}
        CC=${CMAKE_C_COMPILER} CXX=${CMAKE_CXX_COMPILER}
        F77=${CMAKE_Fortran_COMPILER} ./configure --prefix=<INSTALL_DIR>
        --with-netcdf=${NETCDF_DIR} --with-szlib=${SZIP_DIR} --with-eccodes
        "LDFLAGS=$ENV{LDFLAGS} -L${HDF5_DIR}/lib -lhdf5_hl -lhdf5" ${default_configure_args} ${cdo_configure_args} ${cdo_patching}
      BUILD_COMMAND env
        CPATH=$ENV{CPATH} C_INCLUDE_PATH=$ENV{C_INCLUDE_PATH}
        LIBRARY_PATH=$ENV{LIBRARY_PATH}
        LD_LIBRARY_PATH=$ENV{LD_LIBRARY_PATH}
        ${CMAKE_MAKE_PROGRAM} -j${BUILD_PARALLEL_LEVEL} ${default_build_args} ${cdo_build_args})
 
    ExternalProject_Get_Property(cdo INSTALL_DIR)
    set(CDO_DIR ${INSTALL_DIR})
    set(CDO_BIN_DIR ${INSTALL_DIR}/bin)
 
    set_if_not_present(ENV{PATH} "$ENV{PATH}" "${CDO_DIR}/bin")
    set_if_not_present(ENV{CPATH} "$ENV{CPATH}" "${CDO_DIR}/include")
    set_if_not_present(ENV{LIBRARY_PATH} "$ENV{LIBRARY_PATH}" "${CDO_DIR}/lib")
    set_if_not_present(ENV{LD_LIBRARY_PATH} "$ENV{LD_LIBRARY_PATH}"
                       "${CDO_DIR}/lib")
 
  endif(USE_SYSTEM_cdo)
endif(cdo_enabled)