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androidboostcmake

Android build using CMake not able to locate external C++ library files

I am trying to use the pre-compiled boost from silverglint. For some reason, the build system is not able to locate source files [these files are present in src/main/cpp/boost/] 

.../app/src/main/cpp/boost/thread.hpp:13:10: fatal error: 'boost/thread/thread.hpp' file not found

Following is the relevant content of my CMakeLists.txt:

add_library(boost SHARED IMPORTED)
set_property(TARGET boost PROPERTY IMPORTED_LOCATION
        ${CMAKE_CURRENT_SOURCE_DIR}/../../../libs/arm64-v8a/libboost_thread.so
        )

include_directories(
        src/main/cpp/boost/
        )

I suspect this is error is due to misconfigured path. Any help in resolving this error is appreciated.

Solution

  • If the file is included at the path:

    boost/thread/thread.hpp

    and the file is actually located here:

    src/main/cpp/boost/thread/thread.hpp

    I believe the included directory should be: 

    include_directories(
    src/main/cpp
)

    As commented, it is best practice to use absolute paths when including directories in CMake. Also, prefer the target-specific target_include_directories() command whenever possible, to prevent the pollution of the global include directories space:

    target_include_directories(YourTarget PUBLIC 
    ${CMAKE_CURRENT_SOURCE_DIR}/src/main/cpp
)

    FWIW, the idiomatic way to import Boost libraries into your project is described in this answer, and is a much cleaner approach.