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Update the information about kernel options. Mention the ``new option

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scheme''.

Closes PR # docs/1110.
This commit is contained in:
Joerg Wunsch 1996-03-31 18:01:55 +00:00
parent daab85586e
commit d51a59611b
2 changed files with 22 additions and 3 deletions
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6
share/doc/handbook/dialup.sgml
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@ -1,6 +1,6 @@
<!-- This is an SGML document in the linuxdoc DTD of the Tutorial for
Configuring a FreeBSD for Dialup Services by Guy Helmer.
$Id: dialup.sgml,v 1.5 1996/01/31 14:26:02 mpp Exp $
$Id: dialup.sgml,v 1.6 1996/03/26 21:33:09 joerg Exp $
<!DOCTYPE linuxdoc PUBLIC "-//Linux//DTD linuxdoc//EN">
@ -234,7 +234,9 @@ probably need to configure a custom FreeBSD kernel for your system.
Please see the BSD System Manager's Manual chapter on ``Building
Berkeley Kernels with Config'' &lsqb;the source for which is in
<tt>/usr/src/share/doc/smm</tt>&rsqb; and ``FreeBSD Configuration
Options'' &lsqb;in <tt>/sys/doc/options.doc</tt>&rsqb; for more
Options'' &lsqb;in <tt>/sys/conf/options</tt> and in
<tt>/sys/<em>arch</em>/conf/options.<em>arch</em></tt>, with
<em>arch</em> for example being <tt>i386</tt>&rsqb; for more
information on configuring and building kernels. You may have to
unpack the kernel source distribution if haven't installed the system
sources already (<tt>srcdist/srcsys.??</tt> in FreeBSD 1.1,

19
share/doc/handbook/kernelconfig.sgml
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@ -1,4 +1,4 @@
<!-- $Id: kernelconfig.sgml,v 1.7 1996/01/20 06:28:11 nate Exp $ -->
<!-- $Id: kernelconfig.sgml,v 1.8 1996/01/31 14:26:10 mpp Exp $ -->
<!-- The FreeBSD Documentation Project -->
<!-- <!DOCTYPE linuxdoc PUBLIC '-//FreeBSD//DTD linuxdoc//EN'> -->
<chapt><heading>Configuring the FreeBSD Kernel<label id="kernelconfig"></heading>
@ -149,6 +149,23 @@
located in the same directory as GENERIC. If you are in doubt as to
the purpose or necessity of a line, check first in LINT.
<p>The kernel is currently being moved to a better organization
of the option handling. Traditionally, each option in the
config file was simply converted into a <tt>-D</tt> switch
for the <tt>CFLAGS</tt> line of the kernel Makefile. Naturally,
this caused a creaping optionism, with nobody really knowing
which option has been referenced in what files.
<p>In the new scheme, every <tt>#ifdef</tt> that is intended to
be dependant upon an option gets this option out of an
<tt>opt_<em>foo</em>.h</tt> declaration file created in the
compile directory by <tt>config</tt>. The list of valid options
for <tt>config</tt> lives in two files: options that don't
depend on the architecture are listed in
<tt>/sys/conf/options</tt>, architecture-dependant ones
in <tt>/sys/<em>arch</em>/conf/options.<em>arch</em></tt>,
with <em>arch</em> being for example <tt>i386</tt>.
<sect1><heading>Mandatory Keywords</heading>
<p>These keywords are required in every kernel you build.