#34 BUILD_TESTS fails

[Fnoop]

/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:31:7: error: ‘default_random_engine’ is not a member of ‘std’
       std::default_random_engine generator;
       ^~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:32:7: error: ‘uniform_real_distribution’ is not a member of ‘std’
       std::uniform_real_distribution<double> distribution(-1000.0,1000.0);
       ^~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:32:38: error: expected primary-expression before ‘double’
       std::uniform_real_distribution<double> distribution(-1000.0,1000.0);
                                      ^~~~~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:38:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(size_t i=0;i<nTimes*nDimensions;i++)
                      ~^~~~~~~~~~~~~~~~~~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:39:49: error: ‘generator’ was not declared in this scope
           points.ptr<float>(0)[i]= distribution(generator);
                                                 ^~~~~~~~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:39:58: error: ‘distribution’ was not declared in this scope
           points.ptr<float>(0)[i]= distribution(generator);
                                                          ^
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:71:8: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
        for(auto i:res)cout<<i.first<<" ";cout<<endl;
        ^~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:71:42: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’
        for(auto i:res)cout<<i.first<<" ";cout<<endl;
                                          ^~~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:37:14: warning: unused variable ‘array’ [-Wunused-variable]
       float *array=new float[nPoints*nDimensions];
              ^~~~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:11:14: warning: unused parameter ‘argc’ [-Wunused-parameter]
 int main(int argc,char **argv)
              ^~~~
/srv/maverick/var/build/aruco/tests/test_picoflann.cpp:11:26: warning: unused parameter ‘argv’ [-Wunused-parameter]
 int main(int argc,char **argv)
                          ^~~~
/srv/maverick/var/build/aruco/tests/test_essential.cpp: In function ‘cv::Mat getMatrix(double, double, double, double, double, double, double)’:
/srv/maverick/var/build/aruco/tests/test_essential.cpp:13:12: warning: unused variable ‘qw2’ [-Wunused-variable]
     double qw2 = qw*qw;
            ^~~
tests/CMakeFiles/test_picoflann.dir/build.make:62: recipe for target 'tests/CMakeFiles/test_picoflann.dir/test_picoflann.cpp.o' failed
make[2]: *** [tests/CMakeFiles/test_picoflann.dir/test_picoflann.cpp.o] Error 1
CMakeFiles/Makefile2:486: recipe for target 'tests/CMakeFiles/test_picoflann.dir/all' failed
make[1]: *** [tests/CMakeFiles/test_picoflann.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....