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| <h4 class="subsection">3.10.4 Orphan Sections</h4> |
| |
| <p><a name="index-orphan-566"></a>Orphan sections are sections present in the input files which |
| are not explicitly placed into the output file by the linker |
| script. The linker will still copy these sections into the |
| output file by either finding, or creating a suitable output section |
| in which to place the orphaned input section. |
| |
| <p>If the name of an orphaned input section exactly matches the name of |
| an existing output section, then the orphaned input section will be |
| placed at the end of that output section. |
| |
| <p>If there is no output section with a matching name then new output |
| sections will be created. Each new output section will have the same |
| name as the orphan section placed within it. If there are multiple |
| orphan sections with the same name, these will all be combined into |
| one new output section. |
| |
| <p>If new output sections are created to hold orphaned input sections, |
| then the linker must decide where to place these new output sections |
| in relation to existing output sections. On most modern targets, the |
| linker attempts to place orphan sections after sections of the same |
| attribute, such as code vs data, loadable vs non-loadable, etc. If no |
| sections with matching attributes are found, or your target lacks this |
| support, the orphan section is placed at the end of the file. |
| |
| <p>The command-line options ‘<samp><span class="samp">--orphan-handling</span></samp>’ and ‘<samp><span class="samp">--unique</span></samp>’ |
| (see <a href="Options.html#Options">Command-line Options</a>) can be used to control which |
| output sections an orphan is placed in. |
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