Hi Eric,

> When testing on my Debian 11.x (stable) system, --add-udeb
> causes the following build error:
> 
>   dh_makeshlibs: error: The udeb liburing1-udeb does not contain any shared librar
>   ies but --add-udeb=liburing1-udeb was passed!?
>   make: *** [debian/rules:82: binary-arch] Error 255
> 
> Reading the current dh_makeshlibs(1) manpage reveals --add-udeb
> is nowadays implicit as of debhelper 12.3 and no longer
> necessary.  Compatibility with Debian oldstable (buster) remains
> intact.  Tested with debhelper 12.1.1 on Debian 10.x (buster)
> and debhelper 13.3.4 on Debian 11.x (bullseye).
> 
> Signed-off-by: Eric Wong <e@80x24.org>
> ---
>  debian/rules | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/debian/rules b/debian/rules
> index 1a334b3..2a0d563 100755
> --- a/debian/rules
> +++ b/debian/rules
> @@ -70,7 +70,14 @@ binary-arch: install-arch
>  	dh_strip -a --ddeb-migration='$(libdbg) (<< 0.3)'
>  	dh_compress -a
>  	dh_fixperms -a
> -	dh_makeshlibs -a --add-udeb '$(libudeb)'
> +
> +# --add-udeb is needed for <= 12.3, and breaks with auto-detection
> +#  on debhelper 13.3.4, at least
> +	if perl -MDebian::Debhelper::Dh_Version -e \
> +	'exit(eval("v$$Debian::Debhelper::Dh_Version::version") le v12.3)'; \
> +		then dh_makeshlibs -a; else \
> +		dh_makeshlibs -a --add-udeb '$(libudeb)'; fi
> +

I think this needs to be 'ge v12.3)' instead of 'le v12.3)'
otherwise I still get the above error on ubuntu 20.04.

metze