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I just downloaded the sourcefiles from svn and start to read de README file. But it seems that there is no instructions for install from sources.

So, I'll suppose that install from sources is the same as install the tarball.

But another problem. README.en say that I should install POpen4. I try to find in my debian/lenny box:

# apt-cache search popen
libpstreams-dev - a C++ iostream interface to POSIX process I/O
# apt-cache show libpstreams-dev
...
Description: a C++ iostream interface to POSIX process I/O
 PStreams allows you to run another program from your C++ application and to
 transfer data between the two programs, similar to shell pipelines. The
 PStreams class works like a wrapper for the the POSIX.2 functions popen(3) and
 pclose(3) (although it doesn't actually use them), using a C++ iostreams
 interface, instead of C's stdio library. Thus, PStreams makes it possible to
 run an external program and handle its stdin, stdout, and stderr just like you
 would handle any other C++ iostream.
Tag: devel::library, role::devel-lib

there is no reference to ruby. just C++. Is this the right package?