title: duplicate symbol _fopen_file_func on C code, in objective-c project
body: <p>In my IOS project i'm use multiple statics frameworks than use minizip in her code.</p>
  
  <p>when i compile i have an error for a duplicate symbol.</p>
  
  <p>if this error is due to a class, it's really simple (rename class, repair the error )</p>
  
  <p>But in my case, the duplicate symbole provide from the "minizip" files ( like ioapi.c, zip.c unzip.c ) they are load in the frameworks.</p>
  
  <p>How can it's possible to work correctly in this case ?</p>
  
  <p>Thanks for your help.</p>