From 55babf4e8043f5faf2c9b5878603f60a14b172eb Mon Sep 17 00:00:00 2001
From: Fuzzbawls <fuzzbawls@gmail.com>
Date: Mon, 20 Dec 2021 18:04:07 -0800
Subject: [PATCH] [Build] Improve std::atomic test macro

Detection was lacking for some compiler/host combos, resulting in
erratic linking errors
---
 build-aux/m4/l_atomic.m4 | 9 +++++++++
 src/util/threadnames.cpp | 1 +
 2 files changed, 10 insertions(+)

diff --git a/build-aux/m4/l_atomic.m4 b/build-aux/m4/l_atomic.m4
index 75c43f9a92d3d..40639dfe618e5 100644
--- a/build-aux/m4/l_atomic.m4
+++ b/build-aux/m4/l_atomic.m4
@@ -12,8 +12,17 @@ dnl warranty.
 m4_define([_CHECK_ATOMIC_testbody], [[
   #include <atomic>
   #include <cstdint>
+  #include <chrono>
+
+  using namespace std::chrono_literals;
 
   int main() {
+    std::atomic<bool> lock{true};
+    std::atomic_exchange(&lock, false);
+
+    std::atomic<std::chrono::seconds> t{0s};
+    t.store(2s);
+
     std::atomic<int64_t> a{};
 
     int64_t v = 5;
diff --git a/src/util/threadnames.cpp b/src/util/threadnames.cpp
index f455be5d3e7a2..21e80ac102973 100644
--- a/src/util/threadnames.cpp
+++ b/src/util/threadnames.cpp
@@ -6,6 +6,7 @@
 #include <config/pivx-config.h>
 #endif
 
+#include <atomic>
 #include <thread>
 
 #if (defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__))