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| <title>Using as: Object</title> |
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| Next: <a href="Errors.html#Errors" accesskey="n" rel="next">Errors</a>, Previous: <a href="Input-Files.html#Input-Files" accesskey="p" rel="prev">Input Files</a>, Up: <a href="Overview.html#Overview" accesskey="u" rel="up">Overview</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="Output-_0028Object_0029-File"></a> |
| <h3 class="section">1.6 Output (Object) File</h3> |
| |
| <a name="index-object-file"></a> |
| <a name="index-output-file"></a> |
| <a name="index-a_002eout"></a> |
| <a name="index-_002eo"></a> |
| <p>Every time you run <code>as</code> it produces an output file, which is |
| your assembly language program translated into numbers. This file |
| is the object file. Its default name is |
| <code>a.out</code>. |
| You can give it another name by using the <samp>-o</samp> option. Conventionally, |
| object file names end with <samp>.o</samp>. The default name is used for historical |
| reasons: older assemblers were capable of assembling self-contained programs |
| directly into a runnable program. (For some formats, this isn’t currently |
| possible, but it can be done for the <code>a.out</code> format.) |
| </p> |
| <a name="index-linker"></a> |
| <a name="index-ld"></a> |
| <p>The object file is meant for input to the linker <code>ld</code>. It contains |
| assembled program code, information to help <code>ld</code> integrate |
| the assembled program into a runnable file, and (optionally) symbolic |
| information for the debugger. |
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