google_namespace.m4 1.8 KB

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  1. # Allow users to override the namespace we define our application's classes in
  2. # Arg $1 is the default namespace to use if --enable-namespace isn't present.
  3. # In general, $1 should be 'google', so we put all our exported symbols in a
  4. # unique namespace that is not likely to conflict with anyone else. However,
  5. # when it makes sense -- for instance, when publishing stl-like code -- you
  6. # may want to go with a different default, like 'std'.
  7. AC_DEFUN([AC_DEFINE_GOOGLE_NAMESPACE],
  8. [google_namespace_default=[$1]
  9. AC_ARG_ENABLE(namespace, [ --enable-namespace=FOO to define these Google
  10. classes in the FOO namespace. --disable-namespace
  11. to define them in the global namespace. Default
  12. is to define them in namespace $1.],
  13. [case "$enableval" in
  14. yes) google_namespace="$google_namespace_default" ;;
  15. no) google_namespace="" ;;
  16. *) google_namespace="$enableval" ;;
  17. esac],
  18. [google_namespace="$google_namespace_default"])
  19. if test -n "$google_namespace"; then
  20. ac_google_namespace="$google_namespace"
  21. ac_google_start_namespace="namespace $google_namespace {"
  22. ac_google_end_namespace="}"
  23. else
  24. ac_google_namespace=""
  25. ac_google_start_namespace=""
  26. ac_google_end_namespace=""
  27. fi
  28. AC_DEFINE_UNQUOTED(GOOGLE_NAMESPACE, $ac_google_namespace,
  29. Namespace for Google classes)
  30. AC_DEFINE_UNQUOTED(_START_GOOGLE_NAMESPACE_, $ac_google_start_namespace,
  31. Puts following code inside the Google namespace)
  32. AC_DEFINE_UNQUOTED(_END_GOOGLE_NAMESPACE_, $ac_google_end_namespace,
  33. Stops putting the code inside the Google namespace)
  34. ])