From ca1016eb155131ddb6c548a03c80cd6709515e2e Mon Sep 17 00:00:00 2001
From: Frediano Ziglio <freddy77@gmail.com>
Date: Fri, 26 Jun 2020 10:54:58 +0100
Subject: [PATCH] backtrace: Do not attempt to compile if spice_backtrace is
 empty

In backtrace.h spice_backtrace is defined as:

  #if defined(WIN32) && !defined(__MINGW32__)
  #define spice_backtrace()
  #else
  ..

so don't try to compile if an empty macro is used.
Currently not causing any issue as we use MingW on Windows but
does not hurt is code is more portable.

Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Acked-by: Uri Lublin <uril@redhat.com>
---
 common/backtrace.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/backtrace.c b/common/backtrace.c
index 2136191..74c05f8 100644
--- a/common/backtrace.c
+++ b/common/backtrace.c
@@ -23,6 +23,8 @@
 
 #include <config.h>
 
+#if !defined(WIN32) || defined(__MINGW32__)
+
 #include "backtrace.h"
 
 #include <errno.h>
@@ -130,3 +132,4 @@ void spice_backtrace(void)
         spice_backtrace_backtrace();
     }
 }
+#endif