ROS Noetic compilation

[juntuck]

When compiling for ROS Noetic on Ubuntu 20.04, I encountered the error

CMake Error at /usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake:117 (find_package):
Could not find a package configuration file provided by "boost_signals"
(requested version 1.71.0) with any of the following names:

boost_signalsConfig.cmake
boost_signals-config.cmake

Add the installation prefix of "boost_signals" to CMAKE_PREFIX_PATH or set
"boost_signals_DIR" to a directory containing one of the above files. If
"boost_signals" provides a separate development package or SDK, be sure it
has been installed.
Call Stack (most recent call first):
/usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake:182 (boost_find_component)
/usr/share/cmake-3.16/Modules/FindBoost.cmake:443 (find_package)
CMakeLists.txt:6 (find_package)

This was solved by simply removing signals from src/pcl_catkin/geometry2/tf2/CMakeLists.txt (see this for context).

Thanks for the amazing work!

[arschoon]

@juntuck how did you specifically remove signals from the CMakeLists.txt ?