commit 41f18edc9f2f0b1ef304ea25f148bd56a6bf3d70
Author: Maarten de Vries <maarten@de-vri.es>
Date:   Thu Jan 31 00:58:29 2019 +0100

    Remove signals from find_package(Boost COMPONENTS ...) (#1580)
    
    The packages use signals2, not signals. Only boost libraries with
    compiled code should be passed to find_package(Boost COMPONENTS ...),
    and the signals2 library has always been header only.
    
    Boost 1.69 has removed the deprecated signals library, so the otherwise
    useless but harmless `signals` component now breaks the build.

diff --git a/utilities/message_filters/CMakeLists.txt b/utilities/message_filters/CMakeLists.txt
index 5694ac57e..d2b1477ad 100644
--- a/utilities/message_filters/CMakeLists.txt
+++ b/utilities/message_filters/CMakeLists.txt
@@ -13,7 +13,7 @@ catkin_package(
 )
 catkin_python_setup()
 
-find_package(Boost REQUIRED COMPONENTS signals thread)
+find_package(Boost REQUIRED COMPONENTS thread)
 
 include_directories(include ${catkin_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS})
 link_directories(${catkin_LIBRARY_DIRS})