[Buildroot] [Bug 13621] New: Buildroot builds for i686 even though i486 is selected

[Buildroot] [Bug 13621] New: Buildroot builds for i686 even though i486 is selected

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=13621

            Bug ID: 13621
           Summary: Buildroot builds for i686 even though i486 is selected
           Product: buildroot
           Version: 2021.02
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned at buildroot.uclibc.org
          Reporter: moelzerjens at gmail.com
                CC: buildroot at uclibc.org
  Target Milestone: ---

Created attachment 8801
  --> https://bugs.busybox.net/attachment.cgi?id=8801&action=edit
defconfig

Selecting i486 as target architecture variant results in a kernel that's built
for i686.

Steps to reproduce:

Build a image with the attached minimal defconfig and run `qemu-system-i386
-nographic -cpu 486 -kernel output/images/bzImage` results in `This kernel
requires an i686 CPU, but only detected an i486 CPU.`.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Buildroot] [Bug 13621] Buildroot builds for i686 even though i486 is selected

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=13621

--- Comment #1 from Peter Seiderer <ps.report@gmx.net> ---
(In reply to moelzerjens from comment #0)

The buildroot kernel configure/make is called with the correct 'ARCH=i386' and
uses the kernel i386_defconfig without further specification of CPU type, which
defaults from the linux kernel configure (see e.g.
build/linux-5.11/arch/x86/Kconfig.cpu) to M686:

  choice
        prompt "Processor family"
        default M686 if X86_32
        default GENERIC_CPU if X86_64

For workaround specify the correct CPU either by configuring a custom linux
kernel config/defconfig file (or configure by 'make linux-menuconfig')...

Maybe something which can be improved in buildroot..., on the other side a very
special use-case ;-)

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Buildroot] [Bug 13621] Buildroot builds for i686 even though i486 is selected

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=13621

Yann E. MORIN <yann.morin.1998@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yann.morin.1998@free.fr
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #2 from Yann E. MORIN <yann.morin.1998@free.fr> ---
Thank you for your report.

The issue tracker for the Buildroot project has been moved to
the Gitlab.com issue tracker:
    https://gitlab.com/buildroot.org/buildroot/-/issues

We are taking this opportunity to close old issues in this old
tracker. If you believe your issue is still relevant, please
open one in the new issue tracker.

Thank you!

-- 
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
buildroot mailing list
buildroot@buildroot.org
https://lists.buildroot.org/mailman/listinfo/buildroot