it seems my previous iteration to create new topic here was redirected into /dev/null :)
in short: we are looking for engine to extract data into target systems (something like advanced installer) & found that LZMA SDK is perfect library for this.
unfortunately we can't use GPL* licensed software. i seen that LZMA SDK is public domain, but there is no references what it means :)
You can use lzma sdk for your tasks.
There are no restrictions.
If you see any bugs in source code, you can create ticket in "bugs" section.
Just write about source code lines with problem.