title: xcode ld: 8 duplicate symbols for architecture x86_64
body: <p>I am making a game in xcode and c++ with GLUT &amp; OpenGL. I want to place a 3D model in my game and this is the general look of the header file:</p>
  
  <pre><code>unsigned int GunNumVerts = 37812;
  
  float GunVerts [] = {
  // f 1/1/1 1582/2/1 4733/3/1
   0.266494348503772, 0.0252334302709736, -0.000725898139236535,
  0.265592372987502, 0.0157389511523397, -0.000725898139236535,
  0.264890836474847, 0.0182004476109518, -0.00775888079925833,}
  float GunNormals [] = {
  // f 1/1/1 1582/2/1 4733/3/1
  0.986904930120225, -0.0937549933614904, -0.131257990706016,
  0.986904930120225, -0.0937549933614904, -0.131257990706016,
  0.986904930120225, -0.0937549933614904, -0.131257990706016,}
  float GunTexCoords [] = {
  // f 1/1/1 1582/2/1 4733/3/1
  0.110088, 0.229552,
  0.108891, 0.243519,
  0.119508, 0.240861,}
  </code></pre>
  
  <p>I am getting this error with it:</p>
  
  <pre><code>duplicate symbol _GunNumVerts in: /blah/blah/blah/Mouse.o
  /blah/blah/blah/ViewPort.o
  ld: 8 duplicate symbols for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>I am trying to display this in my display method in my viewport as follows:</p>
  
  <pre><code>glVertexPointer(3, GL_FLOAT, 0, GunVerts);
  glNormalPointer(GL_FLOAT, 0, GunNormals);
  glTexCoordPointer(2, GL_FLOAT, 0, GunTexCoords);
  glDrawArrays(GL_TRIANGLES, 0, GunNumVerts);
  </code></pre>
  
  <p>I have 7 other duplicate symbol little phrases but there is only one actual error. </p>