Ubuntu compiled boost for Android

Download https://github.com/moritz-wundke/Boost-for-Android

Unzip into the directory

run ./build-android.sh $(NDK_ROOT)

NDK_ROOT ndk-build is located in that directory

Then will automatically download the source code to compile, NDK r19 above will automatically select the c ++ _ shared runtime library, will download version 1.70, and then generate multiple ABI libraries

To select a different run-time libraries, and so need to be amendedbuild-android.sh？？？具体不会

After generating Android studio use, the following configuration cmake

########## ######### added boost library the begin 
# does not exist because it is manually configured findboost.cmake 
can use available after after # $ {Boost_INCLUDE_DIR} and $ {Boost_LIBRARIES} the 
# SET (Boost_ADDITIONAL_VERSIONS " 1.70 " )
 SET (the BOOST_ROOT / Home / HK / the Android / Boost / $ {} ANDROID_ABI)
 SET (Boost_INCLUDE_DIR the BOOST_ROOT {$} / the include / Boost- 1_70)
 SET (Boost_LIBRARY_DIR the BOOST_ROOT} {$ / lib) 
# wildcard add multiple dependent lib library 
file (GLOB Boost_LIBRARIES " $ {} /libboost*.a Boost_LIBRARY_DIR " ) 

include_directories ($ {} Boost_INCLUDE_DIR) 
########## added boost library end ## ####################################

Such links

#链接库
target_link_libraries(
        native-lib
        ${Boost_LIBRARIES}
）

 Test code

//测试boost
extern "C" JNIEXPORT jstring JNICALL
Java_com_example_myvio_MainActivity_stringFromJNI(
        JNIEnv *env,
        jobject /* this */) {
    std::string hello = "Hello MyVIO";

    //boost::dynamic_bitset<> db4(std::string("0100"));
    //db4.flip();//1011
    /*for(int i=0;i<4;i++)
        if(db4[i]==1)
            hello=hello+"1";
        else
            hello=hello+"0";*/

    boost::dynamic_bitset<> db4(4, BOOST_BINARY(1010));
    db4[0] &= 1;
    db4[1] ^= 1;
    //注意右边是低位
    for(int i=0;i<4;i++)
        if(db4[i]==1)
            hello=hello+"1";
        else
            hello=hello+"0";


    return env->NewStringUTF(hello.c_str());
}