title: How to import external dll library to Borland C++ 6?
body: <p>I build an application in Borland C++ 6 and I'd like to import external, non Borland library (FFTW, to be exact, <a href="http://www.fftw.org/" rel="nofollow noreferrer">http://www.fftw.org</a>).</p>
  
  <p>I have downloaded the fftw dll file, used the implib.exe program to build a lib file known to Borland, included fftw.h in source and copied fftw.h to Borland/include, fftw.lib to Borland/lib and .h, .dll and .lib files to my project folder.</p>
  
  <p>Unfortunately I get several linker errors, which claims:</p>
  
  <blockquote>
    <p>Unresolved external '{name of the FFTW function}' referenced from {name of the source file}</p>
  </blockquote>
  
  <p>What do I do wrong?</p>