Compiling mathgl sample c++ - c++

Question

I have installed mathgl, using:
sudo apt-get install mathgl
sudo apt-get install libmgl-dev
When i tried to compile a sample c++ program from here
#include <mgl2/qt.h>
int sample(mglGraph *gr)
{
gr->Rotate(60,40);
gr->Box();
return 0;
}
//-----------------------------------------------------
int main(int argc,char **argv)
{
mglQT gr(sample,"MathGL examples");
return gr.Run();
}
using gcc sample.cpp -lmgl-qt -lmgl
i get compiler errors at mathgl functions.
lefteris#lefteris-ubuntu:~/Documents/C++/Numerical$ gcc sample.cpp -lmgl-qt -lmgl
In file included from /usr/include/mgl2/abstract.h:27:0,
from /usr/include/mgl2/qt.h:22,
from sample.cpp:1:
/usr/include/mgl2/type.h:42:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglPoint(mglPoint &&d):x(d.x),y(d.y),z(d.z),c(d.c) {}
^
/usr/include/mgl2/type.h:42:23: error: invalid constructor; you probably meant ‘mglPoint (const mglPoint&)’
mglPoint(mglPoint &&d):x(d.x),y(d.y),z(d.z),c(d.c) {}
^
/usr/include/mgl2/type.h:117:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglColor(mglColor &&d):r(d.r),g(d.g),b(d.b),a(d.a) {}
^
/usr/include/mgl2/type.h:117:23: error: invalid constructor; you probably meant ‘mglColor (const mglColor&)’
mglColor(mglColor &&d):r(d.r),g(d.g),b(d.b),a(d.a) {}
^
In file included from /usr/include/mgl2/mgl_cf.h:24:0,
from /usr/include/mgl2/mgl.h:23,
from /usr/include/mgl2/wnd.h:23,
from /usr/include/mgl2/qt.h:36,
from sample.cpp:1:
/usr/include/mgl2/data.h:49:18: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglData(mglData &&d):nx(d.nx),ny(d.ny),nz(d.nz),a(d.a),id(d.id),link(d.link)
^
/usr/include/mgl2/data.h:49:21: error: invalid constructor; you probably meant ‘mglData (const mglData&)’
mglData(mglData &&d):nx(d.nx),ny(d.ny),nz(d.nz),a(d.a),id(d.id),link(d.link)
^
/usr/include/mgl2/data.h:570:18: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglExpr(mglExpr &&d):ex(d.ex) { d.ex=0; }
^
/usr/include/mgl2/data.h:570:21: error: invalid constructor; you probably meant ‘mglExpr (const mglExpr&)’
mglExpr(mglExpr &&d):ex(d.ex) { d.ex=0; }
^
/usr/include/mgl2/data.h:601:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglDataV(mglDataV &&d):nx(d.nx),ny(d.ny),nz(d.nz),di(d.di),dj(d.dj),dk(d.dk),a0(d.a0)
^
/usr/include/mgl2/data.h:601:23: error: invalid constructor; you probably meant ‘mglDataV (const mglDataV&)’
mglDataV(mglDataV &&d):nx(d.nx),ny(d.ny),nz(d.nz),di(d.di),dj(d.dj),dk(d.dk),a0(d.a0)
^
/usr/include/mgl2/data.h:667:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglDataW(mglDataW &&d):nx(d.nx),ny(d.ny),nz(d.nz),di(d.di),dj(d.dj),dk(d.dk)
^
/usr/include/mgl2/data.h:667:23: error: invalid constructor; you probably meant ‘mglDataW (const mglDataW&)’
mglDataW(mglDataW &&d):nx(d.nx),ny(d.ny),nz(d.nz),di(d.di),dj(d.dj),dk(d.dk)
^
/usr/include/mgl2/data.h:741:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglDataF(mglDataF &&d):nx(d.nx),ny(d.ny),nz(d.nz), str(d.str), v1(d.v1),v2(d.v2), ex(d.ex), dx(d.dx),dy(d.dy),dz(d.dz), dfunc(d.dfunc),par(d.par)
^
/usr/include/mgl2/data.h:741:23: error: invalid constructor; you probably meant ‘mglDataF (const mglDataF&)’
mglDataF(mglDataF &&d):nx(d.nx),ny(d.ny),nz(d.nz), str(d.str), v1(d.v1),v2(d.v2), ex(d.ex), dx(d.dx),dy(d.dy),dz(d.dz), dfunc(d.dfunc),par(d.par)
^
/usr/include/mgl2/data.h:846:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglDataT(mglDataT &&d):dat(d.dat),ind(d.ind)
^
/usr/include/mgl2/data.h:846:23: error: invalid constructor; you probably meant ‘mglDataT (const mglDataT&)’
mglDataT(mglDataT &&d):dat(d.dat),ind(d.ind)
^
/usr/include/mgl2/data.h:893:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglDataR(mglDataR &&d):dat(d.dat),ind(d.ind)
^
/usr/include/mgl2/data.h:893:23: error: invalid constructor; you probably meant ‘mglDataR (const mglDataR&)’
mglDataR(mglDataR &&d):dat(d.dat),ind(d.ind)
^
In file included from /usr/include/mgl2/mgl_cf.h:25:0,
from /usr/include/mgl2/mgl.h:23,
from /usr/include/mgl2/wnd.h:23,
from /usr/include/mgl2/qt.h:36,
from sample.cpp:1:
/usr/include/mgl2/datac.h:50:20: error: expected ‘,’ or ‘...’ before ‘&&’ token
mglDataC(mglDataC &&d):nx(d.nx),ny(d.ny),nz(d.nz),a(d.a),id(d.id),link(d.link)
^
/usr/include/mgl2/datac.h:50:23: error: invalid constructor; you probably meant ‘mglDataC (const mglDataC&)’
mglDataC(mglDataC &&d):nx(d.nx),ny(d.ny),nz(d.nz),a(d.a),id(d.id),link(d.link)
^
i tried running the python sample, and it worked fine.
Does anyone know how to fix this problem?