CMakeLists.txt

# (C) Crown Copyright Met Office. All rights reserved.
cmake_minimum_required( VERSION 3.26 FATAL_ERROR )
project( opsinputs VERSION 2026 LANGUAGES C CXX Fortran )

set( CMAKE_CXX_STANDARD 17 )
set( CMAKE_CXX_STANDARD_REQUIRED ON )
set( CMAKE_CXX_EXTENSIONS OFF )
set( CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake;${CMAKE_MODULE_PATH} )
set( CMAKE_DIRECTORY_LABELS "opsinputs" )

set( ECBUILD_DEFAULT_BUILD_TYPE Release )
find_package( ecbuild 3.3.2 REQUIRED )
include( ecbuild_system NO_POLICY_SCOPE )

ecbuild_requires_macro_version( 2.7 )

################################################################################
# Project
################################################################################

ecbuild_declare_project()

ecbuild_enable_fortran( REQUIRED )

set( OPSINPUTS_LINKER_LANGUAGE CXX )

################################################################################
# Dependencies
################################################################################

## Dependencies
find_package( jedicmake QUIET )  # Prefer find modules from jedi-cmake
find_package( MPI REQUIRED COMPONENTS C CXX Fortran )

# Boost
include_directories( ${Boost_INCLUDE_DIR} )

# NetCDF
find_package( NetCDF REQUIRED COMPONENTS C CXX Fortran )

# eckit
find_package( eckit REQUIRED )
include_directories( ${ECKIT_INCLUDE_DIRS} )

# fckit
find_package( fckit REQUIRED )
include_directories( ${FCKIT_INCLUDE_DIRS} )

# ufo
find_package( ufo REQUIRED )
include_directories( ${UFO_INCLUDE_DIRS} )

# ioda
find_package( ioda REQUIRED )
include_directories( ${IODA_INCLUDE_DIRS} )

# oops
find_package( oops REQUIRED )
include_directories( ${OOPS_INCLUDE_DIRS} )

find_package(SHUM REQUIRED)
include_directories( ${SHUM_INCLUDE_DIR} )

################################################################################
# Export package info
################################################################################

list( APPEND OPSINPUTS_TPLS ufo ioda oops )

set( OPSINPUTS_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/src ${CMAKE_CURRENT_BINARY_DIR}/src
                      ${CMAKE_Fortran_MODULE_DIRECTORY} )
set( OPSINPUTS_LIBRARIES opsinputs )

get_directory_property( OPSINPUTS_DEFINITIONS COMPILE_DEFINITIONS )

foreach( _tpl ${OPSINPUTS_TPLS} )
  string( TOUPPER ${_tpl} TPL )
  list( APPEND OPSINPUTS_EXTRA_DEFINITIONS   ${${TPL}_DEFINITIONS}  ${${TPL}_TPL_DEFINITIONS} )
  list( APPEND OPSINPUTS_EXTRA_INCLUDE_DIRS  ${${TPL}_INCLUDE_DIRS} ${${TPL}_TPL_INCLUDE_DIRS} )
  list( APPEND OPSINPUTS_EXTRA_LIBRARIES     ${${TPL}_LIBRARIES}    ${${TPL}_TPL_LIBRARIES} )
endforeach()

################################################################################
# Sources
################################################################################

include( opsinputs_compiler_flags )

add_subdirectory( deps )
add_subdirectory( etc )
add_subdirectory( src )

if( ECBUILD_INSTALL_FORTRAN_MODULES )
  install(
    DIRECTORY ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}
    DESTINATION ${INSTALL_INCLUDE_DIR}
  )
endif()

if( BUILD_TESTING )
  add_subdirectory( test )
  # We can make use of CMake's native support of cpplint in future. If we set
  # `CMAKE_<LANG>_CPPLINT` (where `<LANG>` is either `C` or `CXX`) to point to
  # the `cpplint` executable, it will run `cpplint` as part of the build.
  find_program(
    CPPLINT_EXECUTABLE
    NAMES cpplint
    DOC "Path to the cpplint executable"
  )
  if(CPPLINT_EXECUTABLE)
    ecbuild_add_test(
      TARGET "${PROJECT_NAME}_coding_norms"
      LABELS lint
      TYPE SCRIPT
      COMMAND "${CPPLINT_EXECUTABLE}"
      ARGS --quiet --recursive "${CMAKE_CURRENT_SOURCE_DIR}"
    )
  endif()
  find_program(
    FORTITUDE_EXECUTABLE
    NAMES fortitude
    DOC "Path to the Fortitude linter executable"
  )
  if(FORTITUDE_EXECUTABLE)
    ecbuild_add_test(
      TARGET "${PROJECT_NAME}_fortitude_check"
      LABELS lint
      TYPE SCRIPT
      COMMAND "${FORTITUDE_EXECUTABLE}"
      ARGS check "${CMAKE_CURRENT_SOURCE_DIR}"
    )
  endif()
endif()

################################################################################
# Finalise configuration
################################################################################

# prepares a tar.gz of the sources and/or binaries
ecbuild_install_project( NAME opsinputs )

# print the summary of the configuration
ecbuild_print_summary()