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Date: Wed, 19 Nov 2025 19:24:17 +0000
To: Ian FREISLICH <ianfreislich@gmail.com>
From: Minsoo Choo <minsoochoo0122@proton.me>
Cc: FreeBSD Current <current@freebsd.org>
Subject: Re: nvme.c:2012:2: error: call to undeclared function 'memmove'
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On Wednesday, November 19th, 2025 at 2:19 PM, Ian FREISLICH <ianfreislich@g=
mail.com> wrote:

> My kernel build started failing recently with the following error. I use
> a custom kernel config but looking at NOTES, it's not clear that I've
> missed an option that would make it compile.
>=20
> In file included from /usr/src/sys/dev/nvme/nvme_util.c:34:
> /usr/src/sys/dev/nvme/nvme.h:2012:2: error: call to undeclared function
> 'memmove'; ISO C99 and later do not support implicit function
> declarations [-Werror,-Wimplicit-function-declaration]
> 2012 | memmove(sn, cdata->sn, NVME_SERIAL_NUMBER_LENGTH);
>=20
> | ^
> 1 error generated.
> *** Error code 1
>=20
> I've also tried compiling after blowing away usr/obj.
>=20
> Ian

memmove is declared in systm.h, but I don't see include statement for systm=
.h in nvme.h. Could you try including <sys/systm.h> in sys/dev/nvme/nvme.h =
and build again?