CMake FindPackage fails for custom built boost libraries

问题

I am trying to build a native Android project that requires Boost library. I have built Boost for the platforms I am targeting using this git project. But for some reason find_package() for Boost fails to find the Boost header paths

Below is the project structure and for the Android app, and location where I have placed the Boost library.

android_app
  ├── src
  │   └──<folder>
  │      └──<folder>
  │         └──CMakeLists.txt
  └── lib
      └── boost_armeabi-v7a
          ├── include
          │   └── boost_1_68_0
          │       └──boost
          │          ├──align.hpp
          │          ├──......
          │          └──config.hpp
          └── lib
              ├──libboost_atomic.a
              ├──......
              └──libboost_wserialization.a

In the CMake file I have configured like this

set(Boost_NO_SYSTEM_PATHS ON)
set(Boost_NO_BOOST_CMAKE ON)

set(LOCAL_LIB_DIR "${PROJECT_SOURCE_DIR}/../../../lib")
set(Boost_ADDITIONAL_VERSIONS   "1.68.0")

set(BOOST_INCLUDEDIR "${LOCAL_LIB_DIR}/boost_${ANDROID_ABI}/include")
set(BOOST_LIBRARYDIR "${LOCAL_LIB_DIR}/boost_${ANDROID_ABI}/lib")

find_package(Boost REQUIRED)

Below error is the error iam getting with find_package.

Unable to find the Boost header files.  Please set BOOST_ROOT to the root 
directory containing Boost or BOOST_INCLUDEDIR to the directory containing Boost's headers.

I added some message statements and finally narrowed down to this piece of code in the FindBoost CMake file (3.10.2) installed from Android Studio

find_path(Boost_INCLUDE_DIR
        NAMES         boost/config.hpp
        HINTS         ${_boost_INCLUDE_SEARCH_DIRS}
        PATH_SUFFIXES ${_boost_PATH_SUFFIXES}
    )

Dumping there variables, one of the combination for {_boost_INCLUDE_SEARCH_DIRS}/{_boost_PATH_SUFFIXES} should be valid for my path, but after this executes, Boost_INCLUDE_DIR is set as NOTFOUND. I have no idea why this fails.

One of the _boost_INCLUDE_SEARCH_DIRS value is /home/<user>/<path-to-repo>/app/lib/boost_armeabi-v7a/include and one of value in PATH_SUFFIXES is boost_1_68_0. Can some one help me figure out why this is failing?

来源：https://stackoverflow.com/questions/61515954/cmake-findpackage-fails-for-custom-built-boost-libraries

标签

android

boost

cmake