Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/cmake/Modules/G4HDF5Shim.cmake

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  1 # - G4HDF5Shim
  2 #
  3 # Geant4's Geant4Config.cmake file aims to support CMake 3.8 and newer
  4 # The HDF5 dependency is located through CMake's builtin FindHDF5
  5 # module, but this does not supply imported targets until CMake 3.20.
  6 # It may use HDF5's hdf5-config.cmake file if available, so create
  7 # custom imported target hdf5::hdf5 to allow both cases to be handled
  8 # without interference with either.
  9  
 10 if(HDF5_FOUND)
 11  # If we're in MT mode, found HDF5 must also support MT
 12  if(GEANT4_BUILD_MULTITHREADED OR Geant4_multithreaded_FOUND)
 13    include(CheckCXXSymbolExists)
 14    set(CMAKE_REQUIRED_INCLUDES "${HDF5_INCLUDE_DIRS}")
 15    check_cxx_symbol_exists(H5_HAVE_THREADSAFE "H5pubconf.h" GEANT4_HAVE_H5_HAVE_THREADSAFE)
 16    unset(CMAKE_REQUIRED_INCLUDES)
 17 
 18    if(NOT GEANT4_HAVE_H5_HAVE_THREADSAFE)
 19      message(FATAL_ERROR
 20        "Found an install of HDF5, but it was not built with support for thread safety. "
 21        "Either build Geant4 in single threaded mode, or use/reinstall HDF5 with "
 22        "thread safety enabled. See HDF5's install guides, available from https://support.hdfgroup.org/HDF5/release/, for instructions on this.\n"
 23        )
 24    endif()
 25  endif()
 26 
 27  # If FindHDF5 does not yet supply imported targets, we
 28  # create an internal INTERFACE target to wrap these.
 29  # This still hard-codes include/library paths, but limits it
 30  # to one place. Later, we'll create proper imported targets
 31  # with re-finds but for now this is the best minimally invasive proceedure
 32  if(NOT TARGET hdf5::hdf5)
 33    add_library(hdf5::hdf5 IMPORTED UNKNOWN)
 34    set_target_properties(hdf5::hdf5 PROPERTIES
 35      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
 36      IMPORTED_LOCATION "${HDF5_C_LIBRARY_hdf5}"
 37      INTERFACE_INCLUDE_DIRECTORIES "${HDF5_C_INCLUDE_DIRS}"
 38      INTERFACE_LINK_LIBRARIES "${HDF5_C_LIBRARIES}"
 39      )
 40  endif()
 41 endif()