# Allow users to override the namespace we define our application's classes in

# Arg $1 is the default namespace to use if --enable-namespace isn't present.

# In general, $1 should be 'google', so we put all our exported symbols in a

# unique namespace that is not likely to conflict with anyone else.  However,

# when it makes sense -- for instance, when publishing stl-like code -- you

# may want to go with a different default, like 'std'.

AC_DEFUN([AC_DEFINE_GOOGLE_NAMESPACE],

  [google_namespace_default=[$1]

   AC_ARG_ENABLE(namespace, [  --enable-namespace=FOO to define these Google

                             classes in the FOO namespace. --disable-namespace

                             to define them in the global namespace. Default

                             is to define them in namespace $1.],

                 [case "$enableval" in

                    yes) google_namespace="$google_namespace_default" ;;

                     no) google_namespace="" ;;

                      *) google_namespace="$enableval" ;;

                  esac],

                 [google_namespace="$google_namespace_default"])

   if test -n "$google_namespace"; then

     ac_google_namespace="$google_namespace"

     ac_google_start_namespace="namespace $google_namespace {"

     ac_google_end_namespace="}"

   else

     ac_google_namespace=""

     ac_google_start_namespace=""

     ac_google_end_namespace=""

   fi

   AC_DEFINE_UNQUOTED(GOOGLE_NAMESPACE, $ac_google_namespace,

                      Namespace for Google classes)

   AC_DEFINE_UNQUOTED(_START_GOOGLE_NAMESPACE_, $ac_google_start_namespace,

                      Puts following code inside the Google namespace)

   AC_DEFINE_UNQUOTED(_END_GOOGLE_NAMESPACE_,  $ac_google_end_namespace,

                      Stops putting the code inside the Google namespace)

])