Re: [PATCH] Documentation/Changes: phase out Changes file that hasn't changed

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On 07/23/2013 05:57:15 PM, Aaro Koskinen wrote:
Hi,

On Sun, Jul 21, 2013 at 01:12:55AM -0400, Paul Gortmaker wrote:
> Looking at the bigger picture, the need for this file has simply
> passed.  It was trying to detail required versions of userspace
> packages, in order to cater to hand-crafted systems.  But now the
> majority of users get their userspace all at once from some kind
> of distro, and we are probably a lot more serious about avoiding
> breaking userspace than we were a dozen years ago.

You're right, there's no such thing as "embedded linux", nobody creates their own hand-crafted systems, or assembles cross-compiling environments to target hardware other than x86. That's crazy talk.

Is there any file describing the needed tools (and minimum versions) to _build_ the kernel? I agree that trying to describe such for the run-time userspace does not belong to the kernel tree, but the required/supported
versions of build tools should be still maybe documented...

Documentation/changes _is_ the file that describes the kernel's build-time prerequisites. It hasn't changed in a while because we've been maintaining backwards compatability, especially for several non-x86 targets where it's fiddly to get newer toolchain versions.

(Personally I use the last GPLv2 releases of each package, so gcc 4.2.1, binutils 2.17, make 3.81, and busybox.)

I agree squashfs and such aren't build time prerequisites. It might make more sense to move some of these to menuconfig text for the appropriate option. But that's not the same as not documenting it at all, and "this document has been true for a long time and remains true, therefore we must discard it" strikes me as a really weird document retention criteria.

Rob--
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