Typically, a compiler is needed to compile the protobuf scheme into a shell that will be used in your code. So this is not the actual make / build process. Give more detailed information about how you will use proto files - that is, what language you work in.
UPDATE : it looks like you do not have python-protobuf installed, or Python cannot find it.
Or install it using
apt-get install python-protobuf # for Ubuntu yum install python-protobuf # for Fedora/Redhat
or
easy_install protobuf
or install it from the source as described here: http://code.google.com/p/protobuf/issues/detail?id=235
Tisho
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