[maemo-developers] Optional build dependencies (e.g. for fremantle)

[From: Till Harbaum / Lists]

Hi,

Am Dienstag 17 März 2009 schrieb Till Harbaum / Lists:
> > Build-Depends: would-like-to-have-pkg1|harmless-pkg2,
> >     would-like-to-have-pkg2|harmless-pkg2, ...
> I'll give it a try.
Ok, first try yesterday was
Build-Depends: maemo-version-dev, tablet-browser-interface-dev|maemo-version-dev, ...

This did not install tablet-browser-interface-dev. There seems to be some optimization
somewhere that makes such a shortcut impossible.

So i just tried:
Build-Depends: maemo-version-dev, tablet-browser-interface-dev|devscripts, ...

Which works fine and pulls tablet-browser-interface-dev in. What about the package
to use for this? Such a packet has some limitations:

- It must not be a dependency of anything else the build depends upon. E.g. things
  like libpng-dev will likely always be loaded due to dependencies from the gui
  libs.
- It must always be present
- It must be something an application will normally never need to build successfully 
  (it should never become a real dependency)

This seems to be true for devscripts. Any other suggestion?

Anyway, the osm2go package can now be built by chinook, diablo and fremantle 
autobuilders :-) 

Now it's time to add some "#if MAEMO_VERSION_MAJOR == 5" into the source code
to adapt to the new dialog layout.

Till