if host_machine.system() == 'cygwin' or host_machine.system() == 'windows'
  # Windows DLLs are stricter about symbol visibility than Unix shared
  # objects --- see https://gcc.gnu.org/wiki/Visibility for details.
  # This is a temporary sledgehammer to export everything like on Unix,
  # and not detail with this yet.
  #
  # TODO do not do this, and instead do fine-grained export annotations.
  linker_export_flags = ['-Wl,--export-all-symbols']
else
  linker_export_flags = []
endif