title: error: command 'x86_64-linux-gnu-gcc' failed with exit status 4
body: <p>I am new to python and don't know much about linux commands. So please, consider my problem. I have tried to run the command:</p>
  
  <pre><code>    python pyglpk_setup.py build  
  </code></pre>
  
  <p>but I got following results:   </p>
  
  <pre><code>    running build  
      running build_ext  
      building 'glpk' extension  
      x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/local/include -Isrc -I/usr/include/python2.7 -c src/glpk.c -o build/temp.linux-x86_64-2.7/src/glpk.o -m64  
      x86_64-linux-gnu-gcc: error: src/glpk.c: No such file or directory  
      x86_64-linux-gnu-gcc: fatal error: no input files  
      compilation terminated.  
      error: command 'x86_64-linux-gnu-gcc' failed with exit status 4  
  </code></pre>
  
  <p>I think I have installed dependencies and tried other stuffs to make it run  but I am not able to resolve it.</p>
  
  <p>Why do I get this error?</p>