[gentoo-dev] Gentoo Prefix Lite Quiz

[gentoo-dev] Gentoo Prefix Lite Quiz

[Fabian Groffen]

As promised, here is the slimmed down version of the Prefix quiz.  As
requested, I'll post the answers on -core.


Prefix development quiz (Zero taste)

** when porting ebuilds for Gentoo Prefix, one will get confronted with
   certain problems, these two questions hint at such problems **

4. Package Y has a configure script that's just being run by econf.
   You just added Y and now try to install it.  What do you watch
   for?
5. configure for package Z says "checking for libc... /lib/libc.so.6"
   how do you proceed?

** working with Gentoo Prefix requires to have basic knowledge about how
   various Prefix components interact with the system **

1. Which variables are specific to Prefix?  What does each of them
   represent?  How can you construct them?
2. An ebuild in the main tree does
    emake DESTDIR="${D}" somedir="${D}/somedir" otherdir="/other" install
   what would you change to make it correct in Prefix?
3. Same question for
    insinto /usr/bin
8. An eapify-ed ebuild contains if [ ${EROOT} = "/" ], is this correct?

** once potential problems can be recognised, solutions to them have to
   be implemented **

4. A configure scripts checks for gawk and finds /usr/bin/gawk, how do
   you proceed?  What if it checks for a specific program via a
   --with-program flag?
5. A package installs objects or libraries that depend on other shared
   libraries.  What do you check?  What if the package installs some
   scripts?
6. You fire up $EDITOR which you just emerged, and notice that you get
   different colours than $EDITOR in regular Gentoo.  What went probably
   wrong?

** optional: Gentoo Prefix is different from other offset-based
   solutions in a number of ways.  The following question reveals the
   most(?) developer-friendly difference **

7. References to dynamic libraries in Prefix are sort of "fixed" to find
   the Prefix libraries.  Why is this done?


-- 
Fabian Groffen
Gentoo on a different level

Re: [gentoo-dev] Gentoo Prefix Lite Quiz

[Marijn Schouten (hkBst)]

On Friday 18 December 2009 14:00:06 Fabian Groffen wrote:
> As promised, here is the slimmed down version of the Prefix quiz.  As
> requested, I'll post the answers on -core.
> 
> 
> Prefix development quiz (Zero taste)
> 
> ** when porting ebuilds for Gentoo Prefix, one will get confronted with
>    certain problems, these two questions hint at such problems **
> 
> 4. Package Y has a configure script that's just being run by econf.
>    You just added Y and now try to install it.  What do you watch
>    for?

Maybe better:

4. Package Y's configure script has just been run. What potential problems do 
you especially need to be on the lookout for in the output of "./configure"?

Marijn