Converting a package to use make+ is simple in principle. Step one is to create a file called Makefile+ and place it in the top level directory of your package. Step two is to remove whatever existing build system you were using before - Makefile, configure.in, config.*, Makefile.am and so on. Of course step two is optional!

make+ comes with a handy shell script called make+-skeleton which can help you to create your Makefile+ file. You should run this in the top-level directory of your package. A typical interaction will go like this:

$ make+-skeleton

What is the name of your package? foo

Now I'm going to ask you for the initial version number for this
package. Version numbers have two parts: the MAJOR part and the
MINOR part.

The MAJOR part is a single number (eg 3). It is used (for example)
for versioning libraries.

The MINOR part is two numbers separated by a single DOT (eg 1.0)
This is the incremental release of the library.

If you library is version 3.1.0 then the MAJOR part would be
  3
and the MINOR part would be
  1.0

What is the MAJOR part of the version? 0
What is the MINOR part of the version? 0.1

I've written a Makefile+ file for you. You'll need to edit this file.
Start by searching for all the 'XXX's and replacing them as necessary.

    

This creates the initial Makefile+ for a package called foo at version 0.0.1. The Makefile+ file will start like this:

# -*- Makefile -*-
#
# This is a make+ file. Make+ is a set of scripts which enhance GNU
# make and let you build RPMs, and other package types with just one
# control file.  To build this package you will need to download make+
# from this site: http://www.annexia.org/freeware/makeplus/

PACKAGE         := foo
VERSION_MAJOR   := 0
VERSION_MINOR   := 0.1
VERSION         := $(VERSION_MAJOR).$(VERSION_MINOR)

SUMMARY         := XXX A ONE LINE SUMMARY OF YOUR PACKAGE
COPYRIGHT       := XXX ONE LINE COPYRIGHT OR LICENSE
AUTHOR          := XXX YOUR NAME AND EMAIL ADDRESS

Your first step should be to edit this file, search through for XXX and replace these as desired. (The following sections will help you to write each part of the file).

You should familiarise yourself with the theory of operation of make+ too, particularly remembering that the Makefile+ rules are run in the build subdirectory, not in the source directory.