From 3e3d54815b6a1811b943de7c0e80df7a01f340dd Mon Sep 17 00:00:00 2001
From: William Woodall <william@osrfoundation.org>
Date: Mon, 22 Sep 2014 20:42:27 -0700
Subject: [PATCH] update sigaction detection to support os x

---
 rclcpp/include/rclcpp/utilities.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rclcpp/include/rclcpp/utilities.hpp b/rclcpp/include/rclcpp/utilities.hpp
index 5555346..57957cc 100644
--- a/rclcpp/include/rclcpp/utilities.hpp
+++ b/rclcpp/include/rclcpp/utilities.hpp
@@ -31,7 +31,7 @@
 #include <ros_middleware_interface/handles.h>
 
 // Determine if sigaction is available
-#if _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
+#if __APPLE__ || _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
 #define HAS_SIGACTION
 #endif