Re: [gentoo-user] Problem while writing ebuild

[Danny YUE]

On 2017-05-04 10:53, Nils Freydank <nils.freydank@××××××.de> wrote:
> Am Donnerstag, 4. Mai 2017, 11:59:37 CEST schrieb Danny YUE:
>> Hi,
>>
>> As a noob in ebuild files, I got some problems while created my own
>> ebuild. I googled a lot but did not really find any clue.
>>
>> Let's say package A has features B and C. They are Github repositories
>> and A is the entry, while B and C are submodules.
>>
>> Now I want to make it three different packages respectively, and use USE
>> flags to control which to install just like texlive.
>>
>> 1) I know I can add USE `B' and `C' into `IUSE' variable, but if I run
>> `equery u A', those flags are listed but with an "<unknown>"
>> description. Where can I add some description information?
>
> In general, these descriptions are in XML files. Globally used flags (e.g. 'X'
> or 'python') are set in the portage profiles (search for ".desc" in the
> portage tree[1]). Flags used only by certain packages are in the ebuild dir in
> metadata.xml[2]. I suggest you take a look into www-client/firefox’s
> metadata.xml, because it uses even descriptions with line breaks. (Avoid the
> look into firefox’s ebuild, though :D)

That's really helpful. Now it shows the message I want.

>
>> 2) Only A has Github release URL, B and C by default should be fetched
>> via `git submodule...'. How am I supposed to fetch these packages in my
>> ebuild file? Download inside `src_unpack'?
>
> Sorry, I don’t know much about git submodule. Maybe there’s something useful
> in git-r3.eclass (eclass/git-r3.eclass).
>
>> Any help is appreciated. Thanks in advance.
>>
>>
>> Danny
>
> [1] find /usr/portage/ -iname "*desc"
> [2] find /usr/portage/ -iname "*metadata.xml"
>
> Nils
>
> PS: Great you write ebuilds - keep going on and suggest bugfixes for broken
> ebuilds later! :)

Thank you so much :-D

P.S. Well, riscv-tools is out there for too long..I am really surprised
that nobody ever wrote an ebuild for it...