[Boost Error] CMake Error at /usr/local/share/cmake-3.25/Modules/FindPackageHandleStandardArgs.cmake:230 (message): Could NOT find Boost (missing: python) (found version "0.0.0")

[Goal]

• Boost python version에 관한 lib을 찾지 못하는 경우를 해결할 수 있다.

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[Reference Site]

[ https://stackoverflow.com/questions/3808775/cmake-doesnt-find-boost ]
[ https://answers.ros.org/question/360283/cv_bridge-boost-python-not-found-noetic-fedora-32/ ]
[ https://github.com/ros-perception/vision_opencv/blob/0a908b0bcf33a4374b26b8572860ff48da19f74a/cv_bridge/CMakeLists.txt ]

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[Process]

• [Step 1] CMake가 해당 python의 경로를 찾지 못하기 때문에 생기는 원인이기 때문에 설치된 경로를 찾고 `CMakeList.txt`에 absolute path를 및 다음과 같은 경로를 추가
  • Boost 설치 경로 확인
    •  `$ sudo find /usr/ -name “*boost*”`
      • 본 저자의 경우 include는 “`/usr/include/boost`” 여기에, library는 “`usr/local/lib`” 여기에 있음을 확인
  • build할 package의 경로를 CMakeList.txt에 다음과 같은 코드 삽입

SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "/usr/include/boost")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "/usr/local/lib")

FIND_PACKAGE(Boost)
IF (Boost_FOUND)
    INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIR})
    ADD_DEFINITIONS( "-DHAS_BOOST" )
ENDIF()

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• [Step 2] 추가로 build할 Boost package의 absolute path를 export

$ export BOOST_INCLUDE_DIR="/usr/local/include"
$ export BOOST_LIBRARYDIR="/usr/local/lib"
$ export BOOST_ROOT="/usr/include/boost"

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• [Step 3] `catkin clean` 후 `catkin build` 진행

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[Additional Error in cv_bridge]

• 위의 방법을 적용하여도 같은 error가 발생하나 found version이 변경된 경우

CMake Error at /usr/local/share/cmake-3.25/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
        Could NOT find Boost (missing: python) (found version "1.65.1")

---

• [Process]
  • [Step 1] 먼저 libboost_python 라이브러리가 설치된 버전이 어떤 것인지 먼저 확인
    • `sudo find /usr/ -name “libboost_python*”`
      • 본 저자의 경우 다음과 같이 버전이 나타남 (해당 버전은 python3임)

/usr/local/lib/libboost_python3.so
/usr/local/lib/libboost_python3.so.1.65.1
/usr/local/lib/libboost_python3.a

• • • • • 참고로 Boost-1.69.0 의 경우 python3.8임
  • [Step 2] cv_bridge 의 CMakeList.txt 중 다음과 같은 Line들을 수정
    • Before

if(NOT ANDROID)
    find_package(PythonLibs)
    if(PYTHONLIBS_VERSION_STRING VERSION_LESS 3)
        find_package(Boost REQUIRED python)
    else()
        find_package(Boost REQUIRED python3)
endif()

• • • After (Boost REQUIRED 뒤에 같은 버전으로 모두 변경)

if(NOT ANDROID)
    find_package(PythonLibs)
    if(PYTHONLIBS_VERSION_STRING VERSION_LESS **"3"**)
        find_package(Boost REQUIRED **python3**)
    else()
        find_package(Boost REQUIRED **python3**)
endif()

• • • • Boost-1.69.0 인 경우라면 `python3 → python3.8` 로 작성하면 끝!
  • [Step 3] `catkin clean` 후 `catkin build` 진행