From 2eed72cb7b63fc4ee98af695c625d9a741a09897 Mon Sep 17 00:00:00 2001
From: Maarten de Vries <maarten@de-vri.es>
Date: Thu, 17 Jan 2019 21:40:28 +0100
Subject: [PATCH] Remove `signals` from find_package(Boost COMPONENTS ...)

tf is using signals2, which is not the same library as signals.
Additionally, signals2 has always been header only, and header only
libraries must not be listed in find_package.

Boost 1.69 removed the old signals library entirely, so the otherwise
useless `COMPONENTS signals` actually breaks the build.
---
 tf/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tf/CMakeLists.txt b/tf/CMakeLists.txt
index 04dcb4e8..b469f658 100644
--- a/tf/CMakeLists.txt
+++ b/tf/CMakeLists.txt
@@ -15,7 +15,7 @@ find_package(catkin REQUIRED COMPONENTS
     std_msgs
     tf2_ros
 )
-find_package(Boost REQUIRED COMPONENTS thread signals system)
+find_package(Boost REQUIRED COMPONENTS thread system)
 
 catkin_python_setup()