Could not find a package configuration file provided by “boost_signals”

Could not find a package configuration file provided by “boost_signals”

Could not find a package configuration file provided by "boost_signals"
  (requested version 1.75.0) with any of the following names:

    boost_signalsConfig.cmake
    boost_signals-config.cmake
    Call Stack (most recent call first):

  /usr/local/lib/cmake/Boost-1.75.0/BoostConfig.cmake:258 (boost_find_component)
  /usr/local/share/cmake-3.20/Modules/FindBoost.cmake:594 (find_package)
  Creating-2D-laser-slam-from-scratch-master/lesson4/CMakeLists.txt:22 (find_package) 

编译文件时出现以上错误,进入/usr/local/lib/cmake/Boost-1.75.0目录搜索发现没有boost-signals包,怀疑安装的时候就没装这个包,在官网下载重新装了遍boost-1.75并安装,发现最后有几行文字:

...failed updating 54 targets...
...skipped 10 targets...
...updated 468 targets...

运行./b2 -q查看详情,

In file included from ./boost/python/detail/prefix.hpp:13,
                 from ./boost/python/dict.hpp:8,
                 from libs/python/src/dict.cpp:4:
./boost/python/detail/wrap_python.hpp:57:11: fatal error: pyconfig.h: 没有那个文件或目录
   57 | # include <pyconfig.h>
      |           ^~~~~~~~~~~~
compilation terminated.

发现缺少pyconfig,通过pip安装pyconfig再安装boost还是报错.
再次翻看报错内容,其中用的是python2.7,使用update-alternatives切换python版本无效,发现在conda环境里,使用conda deactivate退出conda环境后python版本变为2.7,再次编译发现还是没有boost-signals包.
仔细搜索后发现这个包在boost1.69后被移除了,小丑竟是我自己!!!

最后注释掉CmakeList中的find_package(Boost REQUIRED COMPONENTS thread signals),编译成功…