drush make multisite installation with recursive make files

Hi,

I hope you can help me with this.

Cenario:
I have one server (one apache installation) and I want to deploy 3 sites in a multisite way.
- 1 makefile for the core and 3 other makefiles for each site. The core makefile should call the other 3 makefiles.

Is it possible using "drush make" to create, for instance, a makefile xpto.make and inside it call the other 3 makefiles in order to deploy the sites in a multisite way like:
/var/www/drupal/html/sites/site1/, site2/ and site3/ ?

Many thanks.
Pedro.