title: Keep receiving "CMake Error: Could NOT find Boost" yet it did find it
body: <p>Cloned a repository and installed the Boost library. My IDE (CLion) keeps telling me</p>
  <pre><code>CMake Error at C:/Program Files/JetBrains/CLion 2021.3/bin/cmake/win/share/cmake-3.21/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
    Could NOT find Boost (missing: regex date_time system filesystem
    unit_test_framework program_options) (found version &quot;1.67.0&quot;)
  Call Stack (most recent call first):
    C:/Program Files/JetBrains/CLion 2021.3/bin/cmake/win/share/cmake-3.21/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
    C:/Program Files/JetBrains/CLion 2021.3/bin/cmake/win/share/cmake-3.21/Modules/FindBoost.cmake:2345 (find_package_handle_standard_args)
    CMakeLists.txt:29 (find_package)
  
  </code></pre>
  <p>Prior to this, I was trying to use the most updated Boost library which led me to more errors, after changing it to the correct library, those errors went away, leaving me with this. This error also remains when trying to use the new library too.</p>
  <p>I have tried <code>set(BOOST_ROOT C:/local/boost_1_71_0)</code> as was the correct answer on another similar post, yet it didn't work. I have also tried adding it to my path, which also does nothing. To note: It is strange because it says the version number of the Boost library yet it says could not be found.</p>
  <p>I am using CLion's bundled CMake, but I also have the official CMake installed just in case. I don't think CLion's cmake is the issue.</p>