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

[Anton Shterenlikht]

	From freebsd at edvax.de Sun Feb 10 00:42:11 2013

	On Sun, 10 Feb 2013 00:31:44 GMT, Anton Shterenlikht wrote:
	> 	From freebsd at edvax.de Sun Feb 10 00:29:36 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)
	> 
	> No, I haven't added those.
	> Are these necessary to have
	> the linux binary compatibility?
	> The handbook only mentions COMPAT_LINUX.

	I think I had the same question some time ago and found
	out that if those options are present, the Linux functionality
	will build properly in the kernel. So I assume they are
	required.

I removed COMPAT_LINUX, and only left

options COMPAT_43
options COMPAT_LINUX32

This seems enough to get flash
working with firefox, exactly as per
the handbook instructions.

Anton