[OE-core] ASSUME_PROVIDED versus SANITY_REQUIRED_UTILITIES versus "The Build Host Packages"

[Richard Purdie]

On Mon, 2016-11-28 at 14:17 +0100, Patrick Ohly wrote:
> I recently ran into a third usage of "file-native": swupd-server
> links against libmagic from file and therefore has a DEPENDS =
> "file". But building swupd-server-native didn't actually build file
> because of ASSUME_PROVIDED and because I hadn't installed libmagic-
> dev on my build host, the build was failing.
> 
> Is there a way to declare that ASSUME_PROVIDED does not apply to this
> case? It sounds like there is a way (based on your comments about
> building file-native when building file and the libbz2-devel
> example), but it did not become clear to me how that works in
> practice.

If you look at the file recipe, you'll see:

DEPENDS = "zlib file-replacement-native"


> Or is it just a case of educating the developer that libmagic-dev
> needs to be installed on the build host in addition to the file
> command?

No, DEPENDS on file-replacement-native.

Cheers,

Richard