[Buildroot] RE i386 support

[Buildroot] RE i386 support

[ewrwcwpw]

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Hi there,

I came across this
https://lists.buildroot.org/pipermail/buildroot/2016-April/159030.html when
looking at creating linux distro (Came across the snakeware distro
https://github.com/joshiemoore/snakeware and noticed there was no 32 bit
option and have some old 32 bit laptops around) I looked at
https://www.thirtythreeforty.net/posts/2020/01/mastering-embedded-linux-part-3-buildroot/
and
assumed that i386_defconfig would exist. similarly (as from .config file
from make menuconfig had i386 option)

So what impact does removing support for i386 have for compiling a distro?
I noticed you could select i386 in make menuconfig... Also debian still has
32bit versions (unlike Ubuntu etc) but that's the kernel plus
applications...

BR2_LEGACY=y and BR2_x86_i386=y were grouped in legacy but BR2_i386=y was
up higher in .config file

So what do people use - the current version of buildroot or the 2016.02
version?

I hope these aren't stupid questions.

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Re: [Buildroot] RE i386 support

[Edgar Bonet]

Hello!

ewrwcwpw wrote:
> So what impact does removing support for i386 have for compiling a
> distro?

Buildroot does not support the Intel 80386 CPU anymore (yes, that chip
from 1985). It does still support the 80486 from 1989, the Pentium
family, and newer 32-bit CPUs.

> I noticed you could select i386 in make menuconfig

In Target options → Target Architecture, you can select "i386". It is
actually the default choice. In this context, "i386" means "any 32-bit
x86 CPU".

In Target options → Target Architecture Variant, the choice "i386" is
gone: the oldest CPU you can choose is "i486". In this context, "i386"
means a specific x86 variant, namely the Intel 80386 from 1985.

> Also debian still has 32bit versions

I believe Debian requires at least an i686 type of PCU.

Regards,

Edgar.
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