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invoke.texi (Link Options): Document an easier way to pass options that take arguments to the GNU linker...

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2009-02-24  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* doc/invoke.texi (Link Options): Document an easier way to pass
	options that take arguments to the GNU linker using -Xlinker and
	-Wl.

From-SVN: r144423
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Sandra Loosemore 2009-02-24 20:44:45 -05:00 committed by Sandra Loosemore
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@ -1,3 +1,9 @@
2009-02-24 Sandra Loosemore <sandra@codesourcery.com>
* doc/invoke.texi (Link Options): Document an easier way to pass
options that take arguments to the GNU linker using -Xlinker and
-Wl.
2009-02-24 Steve Ellcey <sje@cup.hp.com>
PR target/33785

15
gcc/doc/invoke.texi
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@ -8042,17 +8042,28 @@ Pass @var{option} as an option to the linker. You can use this to
supply system-specific linker options which GCC does not know how to
recognize.
If you want to pass an option that takes an argument, you must use
If you want to pass an option that takes a separate argument, you must use
@option{-Xlinker} twice, once for the option and once for the argument.
For example, to pass @option{-assert definitions}, you must write
@samp{-Xlinker -assert -Xlinker definitions}. It does not work to write
@option{-Xlinker "-assert definitions"}, because this passes the entire
string as a single argument, which is not what the linker expects.
When using the GNU linker, it is usually more convenient to pass
arguments to linker options using the @option{@var{option}=@var{value}}
syntax than as separate arguments. For example, you can specify
@samp{-Xlinker -Map=output.map} rather than
@samp{-Xlinker -Map -Xlinker output.map}. Other linkers may not support
this syntax for command-line options.
@item -Wl,@var{option}
@opindex Wl
Pass @var{option} as an option to the linker. If @var{option} contains
commas, it is split into multiple options at the commas.
commas, it is split into multiple options at the commas. You can use this
syntax to pass an argument to the option.
For example, @samp{-Wl,-Map,output.map} passes @samp{-Map output.map} to the
linker. When using the GNU linker, you can also get the same effect with
@samp{-Wl,-Map=output.map}.
@item -u @var{symbol}
@opindex u