Instrumented libraries: support building on Ubuntu Trusty (part 1).

third_party/instrumented_libraries/scripts/autogen.sh

Index: third_party/instrumented_libraries/scripts/autogen.sh
diff --git a/third_party/instrumented_libraries/scripts/autogen.sh b/third_party/instrumented_libraries/scripts/autogen.sh
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+++ b/third_party/instrumented_libraries/scripts/autogen.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Sometimes there isn't a pre-generated configure script, and we must first run
+# autogen.sh to generate it. Even if there is one, sometimes we need to
+# re-generate it (in particular, the autoconf version on Trusty is newer than
+# what is expected by pre-generated configure scripts in some packages).
+
+# Unfortunately, we can't run autogen.sh unconditionally whenever it's present,
+# as that sometimes breaks build. Which is why we have this file.
+
+# Also, some packages may or may not have an autogen script, depending on
+# version. Rather than clutter the GYP file with conditionals, we simply do
+# nothing if the file is not present.
+
+if [ -x ./autogen.sh ]
+then
+   NOCONFIGURE=1 ./autogen.sh
+fi