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)
  hector_slam/hector_mapping/CMakeLists.txt:10 (find_package)

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