qmqtool is just a lightweight perl script. 

Without the ./configure process, users are left changing the script
(/usr/local/bin/perl vs. /usr/bin/perl, etc.).  

So, now we have an install process:

1. ./configure
   optional arguments to configure are:
   --prefix=PREFIX   install architecture-independent files in PREFIX
                      [/usr/local]
   --mandir=DIR      man documentation [PREFIX/man]
   --scriptdir=DIR   qmqtool script [PREFIX/script]

   --perl=PERL       full path to perl (e.g. /usr/local/bin/perl)
   --qmaildir=DIR    directory qmail is locted (e.g. /var/qmail)
   --upgrade         upgrade existing installation
                      (default when no prefix/mandir/scriptdir specified)
   --help            show help message

2. make

3. make install