Update descriptions for ${host} and ${target} to reflect that they are now
canonical triples, not the original user entries.
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@ -1013,12 +1013,19 @@ same Makefile fragments, and the same @code{configure.in}.
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@end defvar
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@defvar{host}
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Contains the name that the user entered for the host. Since many things
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that the user could enter would map to the same output from
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@code{config.sub}, this variable is innappropriate to use for picking
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available configurations. For that, use @code{host_cpu},
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@code{host_vendor}, and/or @code{host_os}. This variable is useful,
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however, for error messages.
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Contains the full configuration name (generated by the script
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@file{config.sub} from the name that the user entered) for the host.
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This is a three-part name of the form
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@example
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@var{cpu}-@var{vendor}-@var{os}
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@end example
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@noindent
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There are separate variables @code{host_cpu}, @code{host_vendor}, and
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@code{host_os} that you can use to test each of the three parts; this
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variable is useful, however, for error messages, and for testing
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combinations of the three components.
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@end defvar
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@defvar{host_cpu}
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@ -1044,12 +1051,19 @@ host as returned by @file{config.sub}.
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@end defvar
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@defvar{target}
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Contains the name that the user entered for the target. Since
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many things that the user could enter would map to the same canonical
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triple, this variable is innappropriate to use for picking available
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configurations. For that, use @code{target_cpu}, @code{target_vendor},
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and/or @code{target_os}. This variable is useful, however, for error
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messages.
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Contains the full configuration name (generated by the script
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@file{config.sub} from the name that the user entered) for the target.
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This is a three-part name of the form
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@example
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@var{cpu}-@var{vendor}-@var{os}
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@end example
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@noindent
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There are separate variables @code{target_cpu}, @code{target_vendor}, and
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@code{target_os} that you can use to test each of the three parts; this
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variable is useful, however, for error messages, and for testing
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combinations of the three components.
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@end defvar
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@defvar{target_cpu}
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