Document the two argument form of the "machine" directive.
Reviewed by: imp MFC After: 3 days
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@ -164,7 +164,7 @@ and return to the current file after
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is successfully processed.
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.\" -------- MACHINE --------
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.Pp
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.It Ic machine Ar arch
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.It Ic machine Ar arch Op Ar basearch
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Specifies the architecture of the machine the kernel is being
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compiled for.
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Legal values for
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@ -188,6 +188,17 @@ The IBM PowerPC architecture.
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The Sun Sparc64 architecture.
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.El
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.Pp
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If argument
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.Ar basearch
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is specified, it points
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.Xr config 8
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to the base architecture of the machine.
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Currently the
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.Cm pc98
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architecture requires its base architecture
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to be set to
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.Cm i386 .
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.Pp
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A kernel configuration file may have only one
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.Ic machine
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directive.
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