dep: Add cubeb

dep/cubeb/src/cubeb_assert.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright © 2017 Mozilla Foundation
+ *
+ * This program is made available under an ISC-style license.  See the
+ * accompanying file LICENSE for details.
+ */
+
+#ifndef CUBEB_ASSERT
+#define CUBEB_ASSERT
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/**
+ * This allow using an external release assert method. This file should only
+ * export a function or macro called XASSERT that aborts the program.
+ */
+
+#define XASSERT(expr) do {                                                     \
+    if (!(expr)) {                                                             \
+      fprintf(stderr, "%s:%d - fatal error: %s\n", __FILE__, __LINE__, #expr); \
+      abort();                                                                 \
+    }                                                                          \
+  } while (0)
+
+#endif