[Paparazzi-devel] <include> directive in airframe files

[Gareth Roberts]

Hi all,

I recently noticed the <include href="foo.xml" /> in one of esden's  
example airframes.

I'd like to use this as I have a bunch of identical aircraft, for which  
the gains may be slightly different but everything else is identical.
I know that if I copy the same file 5 times and change a module import or  
whatever I'll forget to alter them all.

It appears to work for simple cases (a single section) but when I attempt  
to drag in more, such as <firmware />, it fails.
For example, in pseudo-xml:

aircraft.xml
<DOCTYPE>
<airframe name="foo">
        <include href="bar_firmware.xml" />
        <include href="bar_modules.xml" />
        ...
        <section name="gains1" />
        <section name="gains2" />
        <section name="moregains2" />
</airframe>

bar_firmware.xml
<firmware />

bar_modules.xml
<modules />

No error is output (if I change an XML filename to something non-existant  
I do get an error) but the firmware section doesn't get included:
Makefile:39: *** Architecture not set, maybe you forgot to add the target?

Does anyone have any idea why this is, how I can avoid it, and tips for  
organising multiple identical aircraft?
The actual file is here:  
https://github.com/blutack/paparazzi/blob/v3.9/conf/airframes/UoM/Skywalker_Biker.xml

Cheers,
Gareth