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authorVincent Ambo <tazjin@google.com>2020-05-27T00·26+0100
committerVincent Ambo <tazjin@google.com>2020-05-27T00·26+0100
commitafe04691aca3f669f517adaeb5bd4a87a481fb4a (patch)
tree60ae6c91a3959b2f6486256e26ff126e598d1e5d /m4/google_namespace.m4
Squashed 'third_party/glog/' content from commit 9ef754a3023
git-subtree-dir: third_party/glog
git-subtree-split: 9ef754a3023e6fd10f20fe53dfca96dd898182e3
Diffstat (limited to 'm4/google_namespace.m4')
-rw-r--r--m4/google_namespace.m436
1 files changed, 36 insertions, 0 deletions
diff --git a/m4/google_namespace.m4 b/m4/google_namespace.m4
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+# 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)
+])