Date: Mon, 10 Mar 2003 01:14:52 +0800 From: leafy <leafy@leafy.idv.tw> To: freebsd-current@freebsd.org Subject: How does a module decide what to support? Message-ID: <20030309171452.GA2510@leafy.idv.tw>
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From my observations (yes, please correct me if I am wrong), that modules define what to support in their respective makefiles in the form of
SRC= aaa.c bbb.c opt_*.h
Where opt_*.h are automagically generated if they are not in machine@ (and the generated files are just empty files that indicate that the kernel file does not specify this option), else they are linked from machine@.
If some makefile list
SRC= a.c b.c opt_inet.h opt_inet6.h
and kernel config lists 'option INET' *only*, then opt_inet.h has '#define INET 1' in it and opt_inet6.h is empty.
Is this correct?
Jiawei
--
"Without the userland, the kernel is useless."
--inspired by The Tao of Programming
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