building custom kernel on -current: unknown option "COMPAT_LINUX"

Polytropon freebsd at
Sun Feb 10 00:27:51 UTC 2013

On Sun, 10 Feb 2013 00:18:06 GMT, Anton Shterenlikht wrote:
> This is on amd64 r246552
> I added
> options COMPAT_43
> options COMPAT_LINUX
> options COMPAT_LINUX32
> to the kernel config,
> following sys/amd64/conf/NOTES
> On buildkernel I get:
> unknown option "COMPAT_LINUX"
> What am I missing?

Do you also have those (from a working i386 system):

# Linux support
options		COMPAT_LINUX		# Enable Linux ABI emulation
options		LINPROCFS		# Enable the linux-like proc filesystemsupport (requires COMPAT_LINUX and PSEUDOFS)
options		LINSYSFS		# Enable the linux-like sys filesystem support (requires COMPAT_LINUX and PSEUDOFS)
device		lindev
options		COMPAT_AOUT		# Enable i386 a.out binary support

(note PSEUDOFS is also needed)

Magdeburg, Germany
Happy FreeBSD user since 4.0
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