bug#51528: 29.0.50; Can't build Mu4e from straight (missing xapian.h)

[Eli Zaretskii]

> From: Niels Søndergaard <nisoni@algon.dk>
> Date: Sun, 31 Oct 2021 15:23:19 +0100
> 
> Installing mu4e on my iMAC 24" M1 machine comes with the error
> In file included from ../lib/utils/mu-error.hh:24:
> 
> ../lib/utils/mu-utils.hh:32:10: fatal error: 'xapian.h' file not found
> #include <xapian.h>
>         ^~~~~~~~~~
> 1 error generated.
> 
> (just like bug#51321, justr that I can't guess where to change the
> include directory)

Mu4e is not part of Emacs, so I suggest to report this to the Mu4e
developers instead.

Thanks.