Bug#976042: llvm-11: generates WebAssembly incompatible with binaryen 98

[Jonas Smedegaard]

Quoting Sylvestre Ledru (2020-11-28 20:08:51)
> 
> Le 28/11/2020 à 19:57, Jonas Smedegaard a écrit :
>  > Package: llvm-11
>  > Version: 1:11.0.0-5+b1
>  > Severity: normal
> > Seems to me that -  - the least invasive solution is to have
> > LLVM 11
> >
> is your sentence finished ? :)

Whoops, simply editorial noise I forgot to delete - please ignore :-)


> > Assuming my understanding of the above is correct, the least 
> > invasive solution seems to be to have llvm-11 cherry-pick the LLVM 
> > patch to handle this "emscripten EH functions" renaming: 
> > https://github.com/llvm/llvm-project/commit/3bba91f64eef15956f589fa446c265a714cc7893
> 
> I am not super excited to take a patch that big, esp for bullseye.
> 
> Instead, what about getting upstream to take this patch into 11.0.1 ? 
> (which will be ready in time for bullseye).

I doubt upstream would find it appropriate to change the binary 
interface towards other tools (specifically, binaryen) for a minor 
revision of their project: LLVM upstream most likely works perfectly 
fine as-is, when used with some older release of binaryen than what is 
currently targeted Debian bullseye.

As I see it, this is a Debian-specific issue: binaryen and LLVM-11 are 
incompatible, and one of the following is needed to fix it:

 a) downgrade binaryen
 b) patch LLVM
 c) document the incompatibility

To me, option b) seems the least painful - but yes, it is then pain 
inflicted on your instead of the binaryen maintainer or our users :-/

If you think that you can convince upstream LLVM developers to address 
this in a minor update, then great.  My experience trying to convince 
emscripten developers to think in stable releases has not been great, 
however, so I am pessimistic there :-(


Thanks for considering, regardless of the outcome,

 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

 [x] quote me freely  [ ] ask before reusing  [ ] keep private
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: signature
URL: <http://alioth-lists.debian.net/pipermail/pkg-llvm-team/attachments/20201203/7461cc15/attachment.sig>