offtopic: makefile

[Ibrahim F Haddad]

Hello all,

I have a directory that contains 2 sub directories.
In each of the subdirectories I have a software 
that uses makefile to compile. So i have 2 makefiles.
I need to have a makefile in the root directory that
upon the initation of 'make' would go and 
do 'make' for the makefiles available in the 2 
subdirectories.

the question is: how??? :)

thank u.

        -ibrahim