From 53677172f24350e9cf55af86de49fe0568aaf78c Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Thu, 17 Sep 2015 22:56:35 +0200
Subject: [PATCH] notify: use "constexpr" only with glibc

The Mutex and Cond constructors are only "constexpr" with glibc, and
this is what this #ifdef is about.

Backport of commit 459a812a

See http://bugs.musicpd.org/view.php?id=4511
---
 NEWS           | 1 +
 src/notify.hxx | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS
index a773fef64..e01dd3a01 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,5 @@
 ver 0.19.15 (not yet released)
+* fix more build failures on non-glibc builds due to constexpr Mutex
 
 ver 0.19.14 (2016/03/18)
 * decoder
diff --git a/src/notify.hxx b/src/notify.hxx
index 3e62a0103..c96390b8a 100644
--- a/src/notify.hxx
+++ b/src/notify.hxx
@@ -28,7 +28,7 @@ struct notify {
 	Cond cond;
 	bool pending;
 
-#if !defined(WIN32) && !defined(__NetBSD__) && !defined(__BIONIC__)
+#ifdef __GLIBC__
 	constexpr
 #endif
 	notify():pending(false) {}