[fprint] fprint for embedded

[Daniel Drake]

Davidlohr Bueso wrote:
> Currently I am doing major fprint modifications. Removing 
> glib/imagemagick, fixing leaks, separating the project into different 
> little independent modules. I will have get this proyect working on a 
> little ARM machine.  Hopefully I will have something ready to show soon.

Please try and divide your changes and submit them incrementally, 
otherwise it'll be difficult/impossible to merge your work. (That said, 
things are also likely to slip while I am in exam period, plus I am 
spending most of my time working on the new libusb...)

> The basic idea is that a rather heavy monolithic fprint library is 
> separated into smaller, lighter, simpler (usually) independent modules 
> (libraries actually) that can be used in a wide range of devices and 
> architectures (like ARM,  microblaze, etc).  So, for example, if I 
> wanted to implement a matching server, I can use  that specific lib, and 
> not care about enrolling, capturing, etc.

Interesting idea, but I'm not so sure about the "many libraries" 
approach. Have you considered adding a series configure flags to control 
functionality that is built in? e.g. if built with --disable-enroll then 
fp_enroll_finger() simply returns -EOPNOTSUPP and so on.

Thanks,
Daniel