Re: Comparison of busybox.net and busybox_mirror

Hello Michael,

Le jeu. 7 mai 2026 à 23:48, Michael D. Setzer II via busybox
<[email protected]> a écrit :
>
> git pull on busybox_mirror
> git remote set-url origin
> https://github.com/vda-linux/busybox_mirror
> git pull
> ead17e7808236be80614d0a8755f4ddad63ab56c PRE__PULL
> ead17e7808236be80614d0a8755f4ddad63ab56c POST_PULL
> Nothing changed (Already up to date).
>
> git pull on busybox.net
> git remote set-url origin https://git.busybox.net/busybox
> git pull
> ead17e7808236be80614d0a8755f4ddad63ab56c PRE__PULL
> ead17e7808236be80614d0a8755f4ddad63ab56c POST_PULL
> Nothing changed (Already up to date).
>
> built busybox with same .config file
> # cmp -l busybox/busybox busybox_mirror/busybox
>    809  26  76
>    810 102 323
>    811 174 162
>    812 121 274
>    813 301 277
>    814 123 234
>    815 325 341
>    816 311 345
>    817 225  45
>    818  60 165
>    819 136  55
>    820 312 232
>    821 266 177
>    822 322 226
>    823 117 343
>    824 166 373
>    825 343 242
>    826 333 134
>    827  44 147
>    828 126 233
> 450374  61  65
> 450375  62  65
> # busybox/busybox | head -n1; busybox_mirror/busybox | head -n 1
> BusyBox v1.38.0.git (2026-05-08 07:42:12 ChST) multi-call binary.
> BusyBox v1.38.0.git (2026-05-08 07:42:55 ChST) multi-call binary.

As far as I know, there are some specific conditions and environment
to set up for a reproducible build of busybox ; for one,
KCONFIG_NOTIMESTAMP shall be set (in your example, it's clearly not
set, as the binary includes the build date). You can get more
information at https://wiki.debian.org/ReproducibleBuilds ; you might
be able to find some other sources as well. Unless you are in the
required environment, different builds may give you different results
(which is you case here).

Best regards,

-- Emmanuel Deloget

> +------------------------------------------------------------+
>  Michael D. Setzer II - Computer Science Instructor (Retired)
>  mailto:[email protected]
>  mailto:[email protected]
>  mailto:[email protected]
>  Guam - Where America's Day Begins
>  G4L Disk Imaging Project maintainer
>  http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
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