[ENH] provided a function to use a local findpackage cmake file

This looks ugly:

forces source link

if (FORCES_WITH_NETCDF)
  # find the netcdf and netcdf-fortran libraries quietly
  # Temporary replace CMAKE_MODULE_PATH to not alter behavior of down-stream packages
  # https://stackoverflow.com/a/57185195/6696397
  set(FORCES_CMAKE_MODULE_PATH_OLD ${CMAKE_MODULE_PATH})
  set(CMAKE_MODULE_PATH ${FORCES_CMAKE_MODULE_PATH})
  find_package(NetCDF COMPONENTS Fortran QUIET)
  set(CMAKE_MODULE_PATH ${FORCES_CMAKE_MODULE_PATH_OLD})
  unset(FORCES_CMAKE_MODULE_PATH_OLD)
  # Sometimes NetCDF_INCLUDE_DIRS can't be found but NetCDF_Fortran is still usable
  if(NOT NetCDF_Fortran_FOUND)
    message(FATAL_ERROR "FORCES: NetCDF-Fortran not usable")
  else()
    message(STATUS "FORCES: NetCDF-Fortran usable: ${NetCDF_Fortran_LIBRARY}")
  endif()
  target_link_libraries(${LIB_NAME} PUBLIC NetCDF::NetCDF_Fortran)
  target_compile_definitions(${LIB_NAME} PRIVATE FORCES_WITH_NETCDF)
endif()

Could be done better in a wrapper.

See here: https://stackoverflow.com/a/57185195/6696397