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+/* backtrace.c -- Entry point for stack backtrace library.
+ Copyright (C) 2012-2018 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ (1) Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ (2) Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ (3) The name of the author may not be used to
+ endorse or promote products derived from this software without
+ specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE. */
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include "backtrace.h"
+
+#include "internal.h"
+
+/* This source file is compiled if the unwind library is not
+ available. */
+
+int
+backtrace_full (struct backtrace_state *state ATTRIBUTE_UNUSED,
+ int skip ATTRIBUTE_UNUSED,
+ backtrace_full_callback callback ATTRIBUTE_UNUSED,
+ backtrace_error_callback error_callback, void *data)
+{
+ error_callback (data,
+ "no stack trace because unwind library not available",
+ 0);
+ return 0;
+}
+
+int
+backtrace_simple (struct backtrace_state *state ATTRIBUTE_UNUSED,
+ int skip ATTRIBUTE_UNUSED,
+ backtrace_simple_callback callback ATTRIBUTE_UNUSED,
+ backtrace_error_callback error_callback, void *data)
+{
+ error_callback (data,
+ "no stack trace because unwind library not available",
+ 0);
+ return 0;
+}