[oe] How to specify RDEPENDS properly?

[Koen Kooi]

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Paul Sokolovsky schreef:
> Hello Rob,
> 
> Thursday, February 22, 2007, 1:32:55 PM, you wrote:
> 
>> Hi all,
> 
>> I'm trying to build my custom image after updating OE (it worked several
>> months back :). I've already converted several things to the new style, but
>> I can't get my RDEPENDS right. There are about 4 problematic packages, but
>> let's pick readline.
> 
> []
> 
>> I don't really understand when to use the package name (readline), and when
>> to use the ipk name (libreadline[4]). Several months back I had to RDEPEND
>> on libreadline, so try that again:
> 
>   First thing to understand is that OE deals with 2 distinct
> namespaces: one is for recipes, another is for packages. Each recipes
> may build one or more packages. Names of recipes and packages are
> connected, but not the same. Well, it's fair to say that recipe's name
> is usually appears as substring in package name, though bitbake really
> can build package named arbitrarily from any recipe.
> 
>   So, what you specify in DEPENDS in recipe name. What you specify in
> RDEPENDS and other R* friends in package name.
> 
>> export PACKAGE_INSTALL = "... libreadline ..."
>> RDEPENDS = "${PACKAGE_INSTALL}"
> 
>> That doesn't work either:
> 
> BB>>> build display-image
>> SHELL: This command needs to parse bbfiles...
>> NOTE: Using cache in
>> '/bulk/home/rob/oe/dev/build-epia/tmp/cache/rob-epia'
>> NOTE: Handling BitBake files: | (4243/4243) [100 %]
>> NOTE: Parsing finished. 3315 cached, 1 parsed, 196 skipped, 731 masked.
> 
>> SHELL: Building display-image
>> ERROR: Nothing provides runtime dependency libreadline
>> NOTE: no buildable providers for display-image
> 
>> Neither does 'libreadline4'.
> 
>   There's no magic, let's see together: explode
> libreadline4_4.3-r3_i586.ipk you have (it's essentiall .deb; if in
> doubt, use ar followed by tar -z). Look for DEBIAN/control file:
> ----
> Provides: libreadline4
> ----
> that's in addition to implicit provision of package name (which
> matches with explicit one here).
> 
>   So, libreadline4 must work.

Right, but you don't want RDEPENDS = "libreadline4" since not everyone is using debian
style shlib renaming.

regards,

Koen

PS: Paul, sending 1 reply to the list is enough, 2 is overkill
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