Re: NanoBSD: CURRENT unable to compile 13-STABLE : error: a function definition without a prototype is deprecated ... in C

From: Dimitry Andric <dim_at_FreeBSD.org>
Date: Mon, 27 Feb 2023 19:57:19 UTC 
On 27 Feb 2023, at 19:19, FreeBSD User <freebsd@walstatt-de.de> wrote:
> 
> Running recent CURRENT as host (FreeBSD 14.0-CURRENT #23 main-n261147-b8bb73ab724b: Sun Feb 26
> 17:39:38 CET 2023 amd64), and nanoBSD (recent 13-STABLE, git stable/13).
> 
> Building an appliance based on 13-STABLE sources, a customized kernel via nanoBSD, since a
> couple of weeks for now building the sources fails in kernel sources:
> 
> [...]
> --- modules-all ---
> --- all_subdir_an ---
> /pool/home/ohartmann/Projects/router/router/apu2c4/src/sys/dev/an/if_an_pci.c:143:1: error: a
> function definition without a prototype is deprecated in all versions of C and is not
> supported in C2x [-Werror,-Wdeprecated-non-prototype]
> [..]
> 
> Disabling all wireless options in the kernel config starts dropping errors of a similar kind
> on other kernel places.
> 
> Compiling on FBSD 13-STABLE seems to be all right.
> 
> Can this be fixed. please? What causes the error and how can this be resolved if the subtree
> of FreeBSD's sources is a submodule?

Not sure what you mean with "subtree is a submodule", but this is likely
caused by skipping the cross-tools stage somehow. Do you have any
specific make.conf or src.conf settings for that?

-Dimitry