From cb190801706da046823c74f89472af83ff947ce1 Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Sat, 17 Aug 2019 22:25:06 +0200
Subject: [PATCH] src/event/meson.build: add atomic dependency for sparc

Linking with libatomic is needed on sparc otherwise build fails on:
/usr/lfs/v0/rc-buildroot-test/scripts/instance-0/output/host/opt/ext-toolchain/bin/../lib/gcc/sparc-buildroot-linux-uclibc/7.4.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: src/event/libevent.a(MaskMonitor.cxx.o): undefined reference to symbol '__atomic_fetch_or_4@@LIBATOMIC_1.0'

Fixes:
 - http://autobuild.buildroot.org/results/7a9fdb7e323892fb6ed85a2441054303e889c089

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Upstream status: not sent (the same kind of patch for ncmpc was
refused: https://github.com/MusicPlayerDaemon/ncmpc/pull/45)]
---
 src/event/meson.build | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/event/meson.build b/src/event/meson.build
index bc13bbcd2..88370c03a 100644
--- a/src/event/meson.build
+++ b/src/event/meson.build
@@ -47,9 +47,13 @@ event = declare_dependency(
   ],
 )
 
+# Needed on sparc
+atomic_dep = c_compiler.find_library('atomic', required: false)
+
 event_dep = declare_dependency(
   link_with: event,
   dependencies: [
+    atomic_dep,
     thread_dep,
     net_dep,
     system_dep,
-- 
2.20.1