title: Makefile error No targets specified and no makefile found
body: <p>here is my makefile:</p>
  
  <pre><code>sandbox:sandbox.o
     ld -o sandbox sandbox.o
  sandbox.o:sandbox.asm
     nasm -f elf -g -F stabs sandbox.asm
  </code></pre>
  
  <p>I put a tab character for the command line, but when i try to make the file, it gives me the error:
  No targets specified and no makefile found</p>
  
  <p>I am using Jeff Duntemann's book and that makefile error is driving me nuts because I can't progress in my study right now!!!</p>