title: How to handle "Cmake Error: Unable to find the requested Boost libraries"?
body: <p>I'm trying to build this project <a href="https://github.com/DLuensch/StereoVision-ADCensus" rel="nofollow noreferrer">https://github.com/DLuensch/StereoVision-ADCensus</a>, in Windows10 environment. As it tells, I need openCV, boost, libConfig, PCL, OpenMP, Qt 4.8X established. I don't really know what all of those libraries are, but, well, I just follow the instruction provided.
  When I tried the cmake .. command to build the project, CMake raised error "Unable to find the requested Boost libraries", which is shown as below</p>
  
  <pre><code>E:\&gt;cd E:\Projects\VisualStudioProjects\StereoVision-ADCensus-master\StereoVision-ADCensus-master\ADCensusBM\build
  
  E:\Projects\VisualStudioProjects\StereoVision-ADCensus-master\StereoVision-ADCensus-master\ADCensusBM\build&gt;cmake ..
  -- Building for: Visual Studio 15 2017
  -- The C compiler identification is MSVC 19.15.26730.0
  -- The CXX compiler identification is MSVC 19.15.26730.0
  -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x86/cl.exe
  -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x86/cl.exe -- works
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - done
  -- Detecting C compile features
  -- Detecting C compile features - done
  -- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x86/cl.exe
  -- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x86/cl.exe -- works
  -- Detecting CXX compiler ABI info
  -- Detecting CXX compiler ABI info - done
  -- Detecting CXX compile features
  -- Detecting CXX compile features - done
  -- Found OpenMP_C: -openmp (found version "2.0")
  -- Found OpenMP_CXX: -openmp (found version "2.0")
  -- Found OpenMP: TRUE (found version "2.0")
  OPENMP FOUND
  CMake Warning (dev) at CMakeLists.txt:27 (find_package):
    Policy CMP0074 is not set: find_package uses &lt;PackageName&gt;_ROOT variables.
    Run "cmake --help-policy CMP0074" for policy details.  Use the cmake_policy
    command to set the policy and suppress this warning.
  
    Environment variable Boost_ROOT is set to:
  
      E:\BOOST\boost_1_70_0\boost_1_70_0
  
    For compatibility, CMake is ignoring the variable.
  This warning is for project developers.  Use -Wno-dev to suppress it.
  
  CMake Error at D:/Applications/CMake/share/cmake-3.14/Modules/FindBoost.cmake:2165 (message):
    Unable to find the requested Boost libraries.
  
    Boost version: 1.70.0
  
    Boost include path: E:/BOOST/boost_1_70_0/boost_1_70_0
  
    Could not find the following static Boost libraries:
  
            boost_filesystem
            boost_system
  
    No Boost libraries were found.  You may need to set BOOST_LIBRARYDIR to the
    directory containing Boost libraries or BOOST_ROOT to the location of
    Boost.
  Call Stack (most recent call first):
    CMakeLists.txt:27 (find_package)
  
  
  CMake Error at CMakeLists.txt:36 (find_package):
    By not providing "FindPCL.cmake" in CMAKE_MODULE_PATH this project has
    asked CMake to find a package configuration file provided by "PCL", but
    CMake did not find one.
  
    Could not find a package configuration file provided by "PCL" (requested
    version 1.2) with any of the following names:
  
      PCLConfig.cmake
      pcl-config.cmake
  
    Add the installation prefix of "PCL" to CMAKE_PREFIX_PATH or set "PCL_DIR"
    to a directory containing one of the above files.  If "PCL" provides a
    separate development package or SDK, be sure it has been installed.
  
  
  -- Configuring incomplete, errors occurred!
  See also "E:/Projects/VisualStudioProjects/StereoVision-ADCensus-master/StereoVision-ADCensus-master/ADCensusBM/build/CMakeFiles/CMakeOutput.log".
  </code></pre>
  
  <p>I'm not so familiar about CMake or BOOST. in fact, I hadn't known them until yesterday. So I can't clearly figure out what the problem is.</p>
  
  <p>First I searched the files in the BOOST path, and, yes, there's no file named "boost_filesystem" or "boost_system". I doubt if my boost version is not matching.
  Then I looked into the "CMakeLists.txt" file. I found statement like </p>
  
  <pre><code># Under Windows the system variable "BOOST_ROOT" must be set to the location of the root directory of Boost.
  if(WIN32)
    set(Boost_USE_STATIC_LIBS ON)
    set(Boost_USE_STATIC ON)
  endif(WIN32)
  SET(Boost_ADDITIONAL_VERSIONS "1.47" "1.47.0")
  set(Boost_NO_BOOST_CMAKE ON)
  find_package(Boost 1.40.0 COMPONENTS filesystem system REQUIRED)
  set(BOOST_FOUND ${Boost_FOUND})
  set(BOOST_INCLUDE_DIRS "${Boost_INCLUDE_DIR}")
  set(BOOST_LIBRARY_DIRS "${Boost_LIBRARY_DIRS}")
  set(BOOST_LIBRARIES ${Boost_LIBRARIES})
  INCLUDE_DIRECTORIES(${BOOST_INCLUDE_DIRS})
  SET(LIBS ${LIBS} ${Boost_FILESYSTEM_LIBRARY} ${Boost_SYSTEM_LIBRARY} ${Boost_DATE_TIME_LIBRARY})
  </code></pre>
  
  <p>Does it means I should use BOOST 1.47.0 (I've downloaded 1.70.0 now)?
  And, does "set(Boost_NO_BOOST_CMAKE ON)" means I can even build this project without CMake? Since I think the CMake progress is shut down failed because of not the missing of BOOST, but PCL(which I haven't tried to handle yet). 
  If I can skip handling with BOOST problems, I'd like to, because I'm in somewhat a hurry. Or do I have to deal woth it? Hoping for help. Thanks in advance :)</p>