Adding files to LyX sources

[Gaillard Pierre-Olivier]

Hello,

I would need to add a directory inside src :
xml

And inside this directory  :
XMLSAXHandler.h
XMLSAXPrettifier.h
XMLSAXPrettifier.C

I have made a simple Makefile.am by adapting xtl/Makefile.am. Then I ran
automake but the result is strange (make does nothing). It seems that I
should build some kind of library but I do not understand how libtool
works and so on. I have looked at libsupport but I am a bit lost.

 Could somebody describe the steps involved in adding a subdirectory for
an LGPLed library in LyX ? 

        Thanks a lot,

        P.O. Gaillard