$ [fetch|wget] http://www.nncpgo.org/download/nncp-@value{VERSION}.tar.xz.sig
$ gpg --verify nncp-@value{VERSION}.tar.xz.sig nncp-@value{VERSION}.tar.xz
$ xz --decompress --stdout nncp-@value{VERSION}.tar.xz | tar xf -
-$ make -C nncp-@value{VERSION} all
+$ cd nncp-@value{VERSION}
+$ redo all
@end example
+It uses @url{http://cr.yp.to/redo.html, redo} build system for that
+examples. You can use either dozen of various implementations, or at
+least minimalistic POSIX shell @command{contrib/do} (just replace
+@command{redo} with @command{contrib/do} in the example above) included
+in tarball. Following ones are tested to work with:
+@url{http://www.goredo.cypherpunks.ru/, goredo} (NNCP's author creation),
+@url{https://redo.readthedocs.io/, apenwarr/redo} (@code{contrib/do} is
+from that project), @url{https://github.com/leahneukirchen/redo-c, redo-c}.
+
There is @command{install} make-target respecting @env{DESTDIR}. It will
install binaries and info-documentation:
@example
-# make -C nncp-@value{VERSION} install PREFIX=/usr/local
+# PREFIX=/usr/local redo install
@end example