diff options
Diffstat (limited to 'm4/google_namespace.m4')
| -rw-r--r-- | m4/google_namespace.m4 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/m4/google_namespace.m4 b/m4/google_namespace.m4 new file mode 100644 index 000000000000..79e0a6d42a6b --- /dev/null +++ b/m4/google_namespace.m4 @@ -0,0 +1,36 @@ +# 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) +]) |