rrdtool 1.2.*

Download:
http://oss.oetiker.ch/rrdtool/

Dependent package:
http://oss.oetiker.ch/rrdtool/pub/libs/

Difficulty:

install libcgi
wget http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/pub/libs/cgilib-0.5.tar.gz
tar zxvf cgilib-0.5.tar.gz
cd cgilib-0.5
make
cp libcgi.a /usr/local/lib
cp cgi.h /usr/include