[DRE-maint] Bug#1012247: ruby3.1: Please build with --with-coroutine=ucontext on x32

[Antonio Terceiro]

On Thu, Jun 02, 2022 at 06:10:26PM +0200, John Paul Adrian Glaubitz wrote:
> Hi Antonio!
> 
> On 6/2/22 15:58, John Paul Adrian Glaubitz wrote:
> > On 6/2/22 15:43, Antonio Terceiro wrote:
> >> isn't this something that should be done in configure.ac instead (and
> >> submitted upstream)? there's a big switch statement there to select the
> >> type of coroutine.
> > 
> > Sure, I can send a patch later. I just didn't have the time to dig through
> > the code to address the issue. Probably the match for "x86_64-*-*" needs
> > to be refined in configure.ac.
> 
> x32 is actually covered by configure.ac, but there is a bug as the variable
> is named rb_cv_coroutine instead of coroutine_type which is why the configure
> script fails.
> 
> The following patch fixes the problem:
> 
> --- ruby3.1-3.1.2.orig/configure.ac
> +++ ruby3.1-3.1.2/configure.ac
> @@ -2525,7 +2525,7 @@ AS_CASE([$coroutine_type], [yes|''], [
>              coroutine_type=arm64
>          ],
>          [x86_64-linux-gnux32], [
> -            rb_cv_coroutine=ucontext
> +            coroutine_type=ucontext
>          ],
>          [x*64-linux*], [
>              AS_CASE(["$ac_cv_sizeof_voidp"],
> 
> However, since upstream removed the x32 part [1], I don't know whether they would accept
> such a change.
> 
> Adrian
> 
> > [1] https://github.com/ruby/ruby/blob/master/configure.ac#L2539

It's not that upstream removed it, it's that it is added by a Debian
patch in the first place.
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