+# -----------------------------------------------------------
+# new, single-window control center
+# -----------------------------------------------------------
+AC_ARG_ENABLE(control_center_embedding,
+ AS_HELP_STRING([--enable-control-center-embedding=@<:@no/yes/auto@:>@],
+ [Enable support for single-window control center]),
+ , enable_control_center_embedding=auto)
+
+if test "x$enable_control_center_embedding" != "xno"; then
+ PKG_CHECK_MODULES(CONTROL_CENTER_EMBEDDING,
+ [
+ libgnome-control-center-extension
+ ], have_control_center_embedding="yes", have_control_center_embedding="no")
+
+ if test "x$have_control_center_embedding" = "xyes"; then
+ AC_DEFINE(HAVE_CONTROL_CENTER_EMBEDDING, 1, [Define if you have the single-window control center])
+ fi
+else
+ have_control_center_embedding="no"
+fi
+
+if test "x$enable_control_center_embedding" = "xyes" -a "x$have_control_center_embedding" != "xyes"; then
+ AC_MSG_ERROR([Couldn't find single-window control center dependencies.])
+fi
+
+AM_CONDITIONAL(HAVE_CONTROL_CENTER_EMBEDDING, test "x$have_control_center_embedding" = "xyes")
+AC_SUBST(CONTROL_CENTER_EMBEDDING_CFLAGS)
+AC_SUBST(CONTROL_CENTER_EMBEDDING_LIBS)
+