Makefile.am (doc, html): Use intra_rustdoc_links

This is enabled by default in nightly, and is not available at all in
stable.  Considering the PITA that it will be to go back and rewrite docs to
use the new format, and how important of a feature this is, we will just
make use of it now.

1 files changed, 23 insertions, 0 deletions

diff --git a/tamer/build-aux/intra_rustdoc_links_check.rs b/tamer/build-aux/intra_rustdoc_links_check.rs
new file mode 100644
index 0000000..d0f59be
--- /dev/null
+++ b/tamer/build-aux/intra_rustdoc_links_check.rs
@@ -0,0 +1,23 @@
+// Feature check for `test`
+//
+//  Copyright (C) 2014-2019 Ryan Specialty Group, LLC.
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// As of the time of writing, this feature is unstable and can only be
+// enabled in nightly.  This file is intended to be used in the `configure`
+// script to determine whether a nightly version of Rust must be used to
+// build documentation.
+#![feature(intra_rustdoc_links)]
+