One compile command per buffer, not directory

Question

I am often editing foo.cpp and bar.cpp (or foo.tex and bar.tex) in one directory.

During these edit sessions, I run make foo and make bar many times.

At some point with Emacs 23, I needed to type make foo and make bar just once on the respective buffer. Any subsequent invocation of the compile command would reuse the command last used on that buffer.

Now with Emacs 24.3.50.1, this settings has become even worse than it was (with Emacs 21/22?). There, one compile command was saved per directory. Now it's one command for all buffers.

How do I recover the previous setting? I am not interested in polluting every .cpp and .tex file with file-local variables.

Answer 1

Just make the applicable variables buffer-local.

(eval-after-load 'compile
  '(progn (make-variable-buffer-local 'compile-command)
          (make-variable-buffer-local 'compile-history)))