title: Xcode Project #include <cmath>
body: <p>I'm trying to use code that already works in another standalone project without problems.</p>
  
  <p>When I bring this code into my other final project, it indicate that 'cmath' file not found.</p>
  
  <p>The file with the  #include  is in an .hpp file (it just defines some structs for opengl stuff), so there is not a corresponding .mm file. (This is C++ code and I'm mainly an objective-c user so not sure of all the c++ stuff)
  But this is for opengl stuff and works fine we not in this project. </p>
  
  <p>I've tried everything to make this work.</p>
  
  <p>The final project with the problem has other code that uses #include  without problems.
  It is almost like something is causing xcode not to recognize the path the header anymore.
  I've checked its file type it is "Default C++ header"</p>
  
  <p>In the final project I'm using Zxing and also using CorePlots. Not sure if they are causing any problems. Also some file are using #include  not sure if that could conflict with the #incude  or not. (But again the other files with #include  are working fine.</p>
  
  <p>Any help will be greatly appreciated... </p>