$OpenBSD: patch-libbacktrace_backtrace_3,v 1.1 2013/02/07 12:30:44 zhuk Exp $
We renamed the library to execinfo.
--- libbacktrace/backtrace.3.orig	Thu Feb  7 14:51:59 2013
+++ libbacktrace/backtrace.3	Thu Feb  7 14:52:20 2013
@@ -22,7 +22,7 @@
 .Nm backtrace
 .Nd glibc and libexecinfo backtrace compatible API
 .Sh SYNOPSIS
-.Fd #include <backtrace.h>
+.Fd #include <execinfo.h>
 .Ft int
 .Fn backtrace "void **buffer" "int depth"
 .Ft char **
