how to include vnode.h?

From: YU SHANG <>
Date: Thu, 19 Oct 2023 03:48:40 UTC
Hi guys,
I am exercising a FreeBSD driver which is started by the official skeleton ( When I add an include of #include <sys/vnode.h>, the kld failed to compile, complaining that can not find the vnode_if.h. I know this file is generated by the sys/tools/vnode_if.awk. It seems that this script is not invoked by the build system. Any suggestion? Many thanks.

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