Compiler: Default compiler Building Makefile: "C:\Dev-Cpp\Makefile.win" Executing make... make.exe -f "C:\Dev-Cpp\Makefile.win" all g++.exe -c sphere.cpp -o sphere.o -I"C:/Dev-Cpp/lib/gcc/mingw32/3.4.2/include" -I"C:/Dev-Cpp/include/c++/3.4.2/backward" -I"C:/Dev-Cpp/include/c++/3.4.2/mingw32" -I"C:/Dev-Cpp/include/c++/3.4.2" -I"C:/Dev-Cpp/include" g++.exe sphere.o -o "Project1.exe" -L"C:/Dev-Cpp/lib" -mwindows -lopengl32 glut32.lib lib/glut32.lib glut32.lib sphere.o(.text+0x11f):sphere.cpp: undefined reference to `gluNewQuadric@0' sphere.o(.text+0x135):sphere.cpp: undefined reference to `gluQuadricTexture@8' sphere.o(.text+0x205):sphere.cpp: undefined reference to `gluSphere@20' collect2: ld returned 1 exit status make.exe: *** [Project1.exe] Error 1 Execution terminated