FreeLists / openbeos / [openbeos] libscreensaver.so Proof of Concept

[<jason_gerstenberger@xxxxxxxxx>]

Gents,

To get myself familiar with what we're trying to do in a more hands on way,
I picked the smallest .so from /boot/beos/system/lib (libscreensaver.so) and
attempted to create a "replacement".  I described my process below and it
seems to have worked.  Obviously this is a very trivial example, but I think
it's a microcosm of what you would do for any library.

Please let me know if I have made any oversights.  The finished .cpp file
and the compiled .so are at www.geocities.com/jason_gerstenberger

- Jason



How to create an Open Source libscreensaver.so in 30 Minutes

1.  Create a new shared library project
2.  Copy the ScreenSaver.h file into your project directory and add to your
project
3.  Run stubgen -n -q -g -a ScreenSaver.h to create the cpp
4.  Read through objdump for clues (for this lib you don't need many at
all!)
5.  Build your lib & compare objdumps for your s.o. with the factory s.o.
So far as I could tell, my disassem was identical
6.  Backup existing lib and insert new one