Unable to compile program due to dependencies

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Command used to compile the code:-

g++ `fltk-config --cxxflags` disguise_gui_1306.cpp `fltk-config --ldflags --use-images` `pkg-config opencv --cflags --libs` -o disgui

disguise_gui_1306.cpp:102:9: error: ‘FaceRecognizer’ was not declared in this scope cv::Ptr<facerecognizer> model, mouthModel; ^

disguise_gui_1306.cpp:102:23: error: template argument 1 is invalid cv::Ptr<facerecognizer> model, mouthModel; ^

disguise_gui_1306.cpp:102:30: error: invalid type in declaration before ‘,’ token cv::Ptr<facerecognizer> model, mouthModel; ^

disguise_gui_1306.cpp: In function ‘void snapshotCB(Fl_Widget, void)’:

disguise_gui_1306.cpp:233:40: error: base operand of ‘->’ is not a pointer int predictedMouthLabel = mouthModel->predict(testSample); ^

disguise_gui_1306.cpp:243:31: error: base operand of ‘->’ is not a pointer int predictedLabel = model->predict(testSample); ^

disguise_gui_1306.cpp:261:29: error: base operand of ‘->’ is not a pointer int predictedLabel = model->predict(testSample); ^

disguise_gui_1306.cpp: In function ‘void trainFaceRecogniserModel(std::vector<cv::mat>, std::vector<int>)’: disguise_gui_1306.cpp:395:39: error: ‘createEigenFaceRecognizer’ was not declared in this scope model = createEigenFaceRecognizer();
^

disguise_gui_1306.cpp:396:10: error: base operand of ‘->’ is not a pointer model->train(img, lab); ^

disguise_gui_1306.cpp: In function ‘int main(int, char**)’:

disguise_gui_1306.cpp:417:39: error: ‘createEigenFaceRecognizer’ was not declared in this scope model = createEigenFaceRecognizer();
^

disguise_gui_1306.cpp:418:10: error: base operand of ‘->’ is not a pointer model->train(images, labels); ^

disguise_gui_1306.cpp:433:15: error: base operand of ‘->’ is not a pointer mouthModel->train(mouthimages, mouthlabels);

I have tried using:-

cv::Ptr<face::facerecognizer> model, mouthModel;

error: ‘face’ cannot appear in a constant-expression cv::Ptr<face::facerecognizer> model, mouthModel;

The same code compiles perfectly on my friends laptop,and the only difference i am able to understand is he have installed opencv in usr/local while i have the same in downloads folder.

Kindly help,because i have been stuck around this from couple of days. I have even installed extra folders from https://github.com/itseez/opencv_contrib, but no difference.

These are relevant parts of code, I am trying to detect a mouth and face and then create a database of the same.

//
// libraies path:-
#include <opencv2/opencv.hpp>

#include <opencv/highgui.h>

#include <opencv/ml.h>

#include "/home/isenses/Downloads/opencv-3.0.0-rc1/modules/core/include/opencv2/core.hpp"

#include "/home/isenses/Downloads/opencv-3.0.0-rc1/modules/objdetect/include/opencv2/objdetect.hpp"

-#include "/home/isenses/Downloads/opencv-3.0.0-rc1/modules/imgproc/include/opencv2/imgproc.hpp"


cv::Ptr<face::FaceRecognizer> model, mouthModel;

if(predictedMouthLabel == 1){

        pureFaces.push_back(face);

        testSample = face;

        int predictedLabel = model->predict(testSample);

        }


for(int i = 0; i < pureFaces.size(); ++i){

        Mat temp  = pureFaces[i];

        resize(temp, temp, Size(92, 112));

        testSample = temp;    

        int predictedLabel = model->predict(testSample);

        }


void trainFaceRecogniserModel(std::vector<Mat> img, std::vector<int> lab){

    img.clear();

    lab.clear();

    try {

        readdb("database/database.txt", img, lab);

    } catch (cv::Exception& e) {

        cerr << "Error opening file . Reason: " << e.msg << endl;

        exit(1);

    }

    if(!(img.size() >= 2)) {

        string error_message = "This demo needs at least 2 images to work. Please add more images to your data set!";

        CV_Error(CV_StsError, error_message);

    }

    //resize images

    for(int i = 0; i < img.size(); ++i ...