Are you starting from Adam's (version 0.7.4) iLiad-specific source? It is on the
ILiad FBReader wiki page.
If you think your modifications should be incorporated into the standard FBReader version, then it may be best to start with the latest version (0.8.6c) on a Linux Desktop and once it is working there (a) submit the changes to the FBReader developers and (b) port to the iLiad.