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<h4 class="subsection">Commands dealing with files</h4>
<p>Several linker script commands deal with files.
<dl>
<dt><code>INCLUDE </code><var>filename</var><code></code>
<dd>Include the linker script <var>filename</var> at this point. The file will
be searched for in the current directory, and in any directory specified
with the <code>-L</code> option. You can nest calls to <code>INCLUDE</code> up to
10 levels deep.
<br><dt><code>INPUT(</code><var>file</var><code>, </code><var>file</var><code>, ...)</code>
<dd><dt><code>INPUT(</code><var>file</var><code> </code><var>file</var><code> ...)</code>
<dd>The <code>INPUT</code> command directs the linker to include the named files
in the link, as though they were named on the command line.
<p>For example, if you always want to include <code>subr.o</code> any time you do
a link, but you can't be bothered to put it on every link command line,
then you can put <code>INPUT (subr.o)</code> in your linker script.
<p>In fact, if you like, you can list all of your input files in the linker
script, and then invoke the linker with nothing but a <code>-T</code> option.
<p>The linker will first try to open the file in the current directory. If
it is not found, the linker will search through the archive library
search path. See the description of <code>-L</code> in <a href="Options.html#Options">Command Line Options</a>.
<p>If you use <code>INPUT (-l</code><var>file</var><code>)</code>, <code>ld</code> will transform the
name to <code>lib</code><var>file</var><code>.a</code>, as with the command line argument
<code>-l</code>.
<p>When you use the <code>INPUT</code> command in an implicit linker script, the
files will be included in the link at the point at which the linker
script file is included. This can affect archive searching.
<br><dt><code>GROUP(</code><var>file</var><code>, </code><var>file</var><code>, ...)</code>
<dd><dt><code>GROUP(</code><var>file</var><code> </code><var>file</var><code> ...)</code>
<dd>The <code>GROUP</code> command is like <code>INPUT</code>, except that the named
files should all be archives, and they are searched repeatedly until no
new undefined references are created. See the description of <code>-(</code>
in <a href="Options.html#Options">Command Line Options</a>.
<br><dt><code>OUTPUT(</code><var>filename</var><code>)</code>
<dd>The <code>OUTPUT</code> command names the output file. Using
<code>OUTPUT(</code><var>filename</var><code>)</code> in the linker script is exactly like using
<code>-o </code><var>filename</var><code></code> on the command line (see <a href="Options.html#Options">Command Line Options</a>). If both are used, the command line option takes
precedence.
<p>You can use the <code>OUTPUT</code> command to define a default name for the
output file other than the usual default of <code>a.out</code>.
<br><dt><code>SEARCH_DIR(</code><var>path</var><code>)</code>
<dd>The <code>SEARCH_DIR</code> command adds <var>path</var> to the list of paths where
<code>ld</code> looks for archive libraries. Using
<code>SEARCH_DIR(</code><var>path</var><code>)</code> is exactly like using <code>-L </code><var>path</var><code></code>
on the command line (see <a href="Options.html#Options">Command Line Options</a>). If both
are used, then the linker will search both paths. Paths specified using
the command line option are searched first.
<br><dt><code>STARTUP(</code><var>filename</var><code>)</code>
<dd>The <code>STARTUP</code> command is just like the <code>INPUT</code> command, except
that <var>filename</var> will become the first input file to be linked, as
though it were specified first on the command line. This may be useful
when using a system in which the entry point is always the start of the
first file.
</dl>
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