title: Cannot find -lpthread?
body: <p>I am new to C programming.</p>
  
  <p>I was trying to use the pthread API to write some concurrent program.</p>
  
  <p>I downloaded eclipse IDE for C/C++ Developers, MinGW. I have put all the library, header files into the corresponding location of the MinGW file.</p>
  
  <p>When I tried to build the project, there is always an error "cannot find -lpthread", what happened?
  I have added the "-pthread" to the GCC compiler.</p>
  
  <p>I have searched a lot in Google but seems no one have similar problem as me.</p>