title: Make uses old Makefile
body: <p>I'm using make to build a C++ project. During the course of the project, I wanted to make some changes to the Makefile. Unfortunately, ever since I executed make once, it keeps using that particular version of the Makefile and just doesn't do anything with the changes at all.</p>
  
  <p>I have run make clean, I have renamed the makefile, I've searched for other Makefiles which might be used instead, all to no avail. There is no mention of any caching mechanism in the man pages for make, nor anywhere on Google.</p>
  
  <p>Does anyone have any idea why make isn't using the new version and what I can do about it? I'm compiling on a Ubuntu 12.04.2 LTS (x86_64) box, with (GNU) make version 3.81.</p>
  
  <p><strong>Update:</strong>
  Some additional information. It seems make is using the current version of the makefile after all. If I change something in the main target, it's working just fine. But if I change something in the obj/%.o target, it just keeps running the same command, no matter what changes I make to that target.</p>
  
  <p>Full Makefile an be found here: <a href="http://pastebin.com/WK43NRcL" rel="nofollow">http://pastebin.com/WK43NRcL</a></p>