So the next step was was to test this Duktape. To start testing, I first went to http://duktape.org/ to download the source code packet (file duktape-1.5.0.tar.xz). That .xz ending made me to wonder what is the right software to expand it. Finally I expandex .xz with 7-Zip on Windows PC and copied duktape-1.5.0.tar to Linux system. Then I run tar xvf duktape-1.5.0.tar to get the files out. Then I read getting started guide to have smooth starting.
I compiled the source code with following command:
make -f Makefile.cmdline