metapost pictures in pdflatex

Question

To include metapost pictures in a latex file compiled by pdflatex I usually do something like

\usepackage[pdftex]{graphicx}
...
\includegraphics{filename-without-mps}

but this requires all metapost output to have extension .mps (which is usually fine — one can just add the line filenametemplate "%j-%c.mps"; into .mp source). Is there a way to include mps pictures with their usual filenames (smth.1, smth.2 etc)?

Upd. I usually need it to recompile some old files with pdflatex — so I need some recipe that adds couple of lines in the preamble but not requires to changes everything.

---

I tried to invent some hack (for Windows, to be compiled with pdflatex -enable-write18):

\usepackage[pdftex]{graphics}
\DeclareGraphicsRule{.1}{pdf}{.1.pdf}{`copy #1 #1.eps && epstopdf #1.eps}
...
\includegraphics{smth.1}

which indeed generates smth.1.pdf but fails with the error

! Package pdftex.def Error: File `smth-1-converted-to.1.pdf' not found.

Upd2. The question was answered. But maybe someone knows how to make this hack work?

Answer 1

Just do:

\DeclareGraphicsRule{.1}{mps}{*}{} 
\DeclareGraphicsRule{.2}{mps}{*}{} 
% etc. 

Answer 2

Do you know that there's a package for encapsulating metapost figures in LaTeX? It's called emp.