[LEDE-DEV] Using PROVIDES with kmod packages

Rafał Miłecki zajec5 at gmail.com
Fri Feb 17 08:56:45 PST 2017

On 17 February 2017 at 16:06, Jonas Gorski <jonas.gorski at gmail.com> wrote:
> On 17 February 2017 at 15:38, Rafał Miłecki <zajec5 at gmail.com> wrote:
>> On 17 February 2017 at 15:14, Jonas Gorski <jonas.gorski at gmail.com> wrote:
>>> On 17 February 2017 at 14:53, Rafał Miłecki <zajec5 at gmail.com> wrote:
>>>> I was doing some fun experiments with ssb/bcma/b43 as a research based on:
>>>> [PATCH RFC] kernel: allow selecting kmod-ssb on TARGET_brcm47xx_mips74k
>>>> I was trying to build 2 variants of ssb package and 2 variants of b43
>>>> package.
>>>> It didn't work, most likely because of the way PROVIDES is handled. I
>>>> stripped
>>>> down my changes to a simple ssb module package dif (see below). With this
>>>> change
>>>> applied I'm getting:
>>>> Collected errors:
>>>>  * satisfy_dependencies_for: Cannot satisfy the following dependencies for
>>>> kmod-b43:
>>>>  *      kmod-ssb *
>>>>  * opkg_install_cmd: Cannot install package kmod-b43.
>>>> Is this possible to make PROVIDES work with kernel module packages?
>>> Our kernel can handle ko's built into the kernel and just create empty
>>> packages, so wouldn't changing the DEPENDS to
>>> @PCI_SUPPORT||TARGET_brcm47xx||TARGET_brcm63xx enough?
>> I don't want to build ssb into the kernel. I want to add kmod-ssb
>> package with per device rootfs feature.
> What I mean is you can make it visible also for TARGET_brcm47xx, and
> if the subtarget chooses to built it into the kernel then kmod-ssb
> will be empty, and if it doesn't, then kmod-ssb will contain ssb.ko,
> just like on other targets.
> So no need for variants here, no?

OK, I think you're correct.

>>> If that isn't enough you could also create a
>>> KernelPackage/ssb/brcm47xx (see e.g. crypto-misc, which as a x86
>>> variant, or crypto-sha512 which even has a x86_64 one). With some
>>> oppropriate overrides.
>> This also doesn't help me. I need two variants of b43 package, not one
>> modified. It's because most mips74k devices can work with b43 with
>> bcma only. There are only about 2 devices than need modified b43
>> package with ssb support enabled.
>> In other words I need exactly something like PROVIDES ;)
> So you want to build b43 twice for the same subtarget, once with bcma
> only, and once with ssb support in addtion?

So far I only started playing with this, but yes, that was my initial
idea. I don't know if I'll implement it yet. Just fun project for now


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