On 11-09-2022 15:47, M wrote:
> +    (arguments
> +     (list #:tests? #f ;; batsignal's tests depend on docker
> +           #:phases
> +           #~(modify-phases %standard-phases (delete 'configure))
> +           #:make-flags
> +           #~(list (string-append "PREFIX=" #$output)
> +                   (string-append "CC=" #$(cc-for-target)))))
> +    (inputs (list libnotify))

The makefile uses pkg-config.  However, when cross-compiling,
TARGET-pkg-config is required instead.  To solve this, you will need to 
'substitute*' pkg-config to #$(pkg-config-for-target).  For an example, 
see opensmtpd-filter-dkimsign.

(Unfortunately the dependency libtirpc is not yet cross-compilable ...)

Greetings,
Maxime.