[Buildroot] [v1, 1/2] package/aichat: require SSE2 on i386 target

[Buildroot] [v1, 1/2] package/aichat: require SSE2 on i386 target

[Alexander Shirokov]

The ring crate enforces SSE/SSE2 availability on x86 at compile time,
leading to build failures on targets where they are not supported.

Add a new dependency to avoid selecting aichat on such targets.

The failure was reported by autobuild [1]:

    error[E0080]: evaluation panicked: assertion failed: cfg!(target_feature = "sse") && cfg!(target_feature = "sse2")
    --> /home/autobuild/autobuild/instance-38/output-1/build/aichat-0.30.0/VENDOR/ring/src/cpu/intel.rs:26:9
       |
    26 |         assert!(cfg!(target_feature = "sse") && cfg!(target_feature = "sse2"));
       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    evaluation of `cpu::intel::abi_assumptions::_ASSUMES_SSE2` failed here

[1] https://autobuild.buildroot.org/results/c38a21c80490d5012c5b7bd926e778b406b5f26a/build-end.log

Signed-off-by: Alexander Shirokov <shirokovalexs@gmail.com>
---
 package/aichat/Config.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/package/aichat/Config.in b/package/aichat/Config.in
index e1bd177076..f828f4b1c3 100644
--- a/package/aichat/Config.in
+++ b/package/aichat/Config.in
@@ -1,6 +1,8 @@
 config BR2_PACKAGE_AICHAT
 	bool "aichat"
 	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS
+	# i386: needs SSE2 for `ring` crate
+	depends on !(BR2_i386 && !BR2_X86_CPU_HAS_SSE2)
 	select BR2_PACKAGE_HOST_RUSTC
 	help
 	  AIChat helps seamlessly integrate different LLM models,
-- 
2.54.0

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[Buildroot] [v1, 2/2] DEVELOPERS: move aichat to maintainer entry

[Alexander Shirokov]

Signed-off-by: Alexander Shirokov <shirokovalexs@gmail.com>
---
 DEVELOPERS | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/DEVELOPERS b/DEVELOPERS
index d591c62805..61a7fc4104 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -87,6 +87,7 @@ N:	Aleksandr Makarov <aleksandr.o.makarov@gmail.com>
 F:	package/cpp-httplib/
 
 N:	Alexander Shirokov <shirokovalexs@gmail.com>
+F:	package/aichat/
 F:	package/broot/
 F:	package/kibi/
 F:	package/nnn/
@@ -131,9 +132,6 @@ F:	package/openpgm/
 N:	Aleksandr Makarov <aleksandr.o.makarov@gmail.com>
 F:	package/libest/
 
-N:	Alexander Shirokov <shirokovalexs@gmail.com>
-F:	package/aichat/
-
 N:	Alexander Sverdlin <alexander.sverdlin@gmail.com>
 F:	package/mini-snmpd/
 
-- 
2.54.0

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[Buildroot] [v1,1/2] package/aichat: require SSE2 on i386 target

[Alexander Shirokov]

Hi All,

Just a brief note: while I started with the simplest fix (disabling the
package), the root cause may lie in a different area.

As I can see, the broot package is now failing as well. It appears to be related
to SSE too (at least according to the function names).

For example [1]:

	error[E0425]: cannot find function `defilter_avg_sse2_inner` in this scope
   	--> /home/thomas/autobuild/instance-1/output-1/build/broot-1.55.0/VENDOR/zune-png/src/filters/sse4.rs:332:9
    	|
	213 | / unsafe fn de_filter_paeth_sse41_inner<const SIZE: usize>(
	214 | |     prev_row: &[u8], raw: &[u8], current: &mut [u8]
	215 | | ) {
	216 | |     let zero = _mm_setzero_si128();
	...   |
	266 | | }
    	| |_- similarly named function `de_filter_paeth_sse41_inner` defined here
	...
	332 |           defilter_avg_sse2_inner::<SIZE>(prev_row, raw, current);
    	|           ^^^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `de_filter_paeth_sse41_inner`

I'll investigate more carefully to avoid having to fix or work around the issue
in each package individually.

I'm also sure that if this is a common problem, it will affect other Rust
packages as well.

If you have any thoughts or ideas, feel free to share.

Thank you

[1] https://autobuild.buildroot.org/results/156abd4e214e230d36426fd407a7edb030fe0f31/build-end.log
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Re: [Buildroot] [v1, 2/2] DEVELOPERS: move aichat to maintainer entry

[Thomas Petazzoni via buildroot]

On Wed, Jun 17, 2026 at 06:13:12PM +0200, Alexander Shirokov wrote:
> Signed-off-by: Alexander Shirokov <shirokovalexs@gmail.com>

Applied to master, thanks!

Best regards,

Thomas Petazzoni
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [v1, 1/2] package/aichat: require SSE2 on i386 target

[Thomas Petazzoni via buildroot]

Hello,

On Wed, Jun 17, 2026 at 06:13:11PM +0200, Alexander Shirokov wrote:
> The ring crate enforces SSE/SSE2 availability on x86 at compile time,
> leading to build failures on targets where they are not supported.
> 
> Add a new dependency to avoid selecting aichat on such targets.
> 
> The failure was reported by autobuild [1]:
> 
>     error[E0080]: evaluation panicked: assertion failed: cfg!(target_feature = "sse") && cfg!(target_feature = "sse2")
>     --> /home/autobuild/autobuild/instance-38/output-1/build/aichat-0.30.0/VENDOR/ring/src/cpu/intel.rs:26:9
>        |
>     26 |         assert!(cfg!(target_feature = "sse") && cfg!(target_feature = "sse2"));
>        |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>     evaluation of `cpu::intel::abi_assumptions::_ASSUMES_SSE2` failed here
> 
> [1] https://autobuild.buildroot.org/results/c38a21c80490d5012c5b7bd926e778b406b5f26a/build-end.log
> 
> Signed-off-by: Alexander Shirokov <shirokovalexs@gmail.com>

Could you trace back which version of aichat first started exposing
the problem? We need to understand if our LTS branches are affected or
not. Adding a Fixes: tag pointing to the Buildroot commit who
introduced the issue is best, like this:

Fixes: <commit hash> ("<commit title>")

Thanks a lot!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [v1, 1/2] package/aichat: require SSE2 on i386 target

[Thomas Petazzoni via buildroot]

Hello,

On Thu, Jun 18, 2026 at 11:29:26AM +0200, Alexander Shirokov wrote:
> Hi All,
> 
> Just a brief note: while I started with the simplest fix (disabling the
> package), the root cause may lie in a different area.
> 
> As I can see, the broot package is now failing as well. It appears to be related
> to SSE too (at least according to the function names).
> 
> For example [1]:
> 
> 	error[E0425]: cannot find function `defilter_avg_sse2_inner` in this scope
>    	--> /home/thomas/autobuild/instance-1/output-1/build/broot-1.55.0/VENDOR/zune-png/src/filters/sse4.rs:332:9

That's from a different crate, right? So it's a different problem from
the ring create requiring SSE2.

> I'll investigate more carefully to avoid having to fix or work around the issue
> in each package individually.

Did you come to any conclusion regarding this?

Thanks!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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