Inspite of the nice Scons solution I still think there is a want/need for information on makefiles. Why: Not all servers can have aditional software installed like python and Scons.
E.G. if one hase gcc on Solaris we must have the option to make "makensis" on this machine with pre-compiled exeheads.
Since I do have a posibility to make those precompiled exeheads on a windows machine I can always actulize them myself.
If I finally succeed in compiling the makensssi.cpp on Solaris after that I will try to make a document / webpage aboout automated NSIS on various *NIX platforms. Since I just ordered a Mac with OSX this will probabbly also included ;)
Since I'm new to all the Solaris etc. stuff it still can take awhile. Help is really appriciated.