From 6a63bfa1603275715620680dda13e17d2385bee0 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Giedrius=20Statkevi=C4=8Dius?=
 <giedrius.statkevicius@gmail.com>
Date: Tue, 3 Mar 2015 21:24:34 +0200
Subject: [PATCH] Document that -k is available only with libunwind

Without this users might get confused why `man strace` describes
an option that doesn't work.

* strace.1: Note that -k is available only if strace is built
with libunwind.
---
 strace.1 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/strace.1 b/strace.1
index 1e69217f..c1f87e9d 100644
--- a/strace.1
+++ b/strace.1
@@ -269,6 +269,9 @@ Print the instruction pointer at the time of the system call.
 .TP
 .B \-k
 Print the execution stack trace of the traced processes after each system call (experimental).
+This option is available only if
+.B strace
+is built with libunwind.
 .TP
 .B \-q
 Suppress messages about attaching, detaching etc.  This happens
-- 
2.50.1