[GRASS-user] g.extension_problem_MAC

[Matteo Mura]

Hello everybody

i'm using snow leopard and just yesterday i've downloaded the GRASS GIS 6.4.1-2  from the site of William Kyngesburye (thanks for all William), great idea the g.extension GUI, but when i try to install an addons the output is following message: 

(Sat May 14 10:18:38 2011)                                                      
g.extension extension=r.basin svnurl=https://svn.osgeo.org/grass/grass-addons   
ERROR: The 'make' program is required. Please install first.
(Sat May 14 10:18:38 2011) Command finished (0 sec)

could you give me more details about how to install this 'make' program ?
be patients, i'm not advanced users like you

thanks
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