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<?xml version="1.0" encoding="UTF-8"?>
<guide self="ebuild-writing/functions/src_unpack/">
<chapter>
<title>src_unpack</title>
<body>
<table>
<tr>
<th>Function</th>
<ti><c>src_unpack</c></ti>
</tr>
<tr>
<th>Purpose</th>
<ti>Extract source packages.</ti>
</tr>
<tr>
<th>Sandbox</th>
<ti>Enabled</ti>
</tr>
<tr>
<th>Privilege</th>
<ti>user</ti>
</tr>
<tr>
<th>Called for</th>
<ti>ebuild</ti>
</tr>
</table>
</body>
<section>
<title>Default <c>src_unpack</c></title>
<body>
<codesample lang="ebuild">
src_unpack() {
if [[ -n ${A} ]]; then
unpack ${A}
fi
}
</codesample>
</body>
</section>
<section>
<title>Sample <c>src_unpack</c></title>
<body>
<codesample lang="ebuild">
src_unpack() {
unpack ${P}.tar.xz
use foo && unpack ${P}-foo-extension.tar.xz
}
</codesample>
</body>
</section>
<section>
<title>Unpacking tarballs</title>
<body>
<p>
The <c>unpack</c> function should be used to unpack tarballs, compressed
files and so on. Do not use <c>tar</c>, <c>gunzip</c> etc. manually.
</p>
<p>
The <c>${A}</c> variable contains all of the <c>SRC_URI</c> components, except
for any which are excluded by USE-based conditionals inside <c>SRC_URI</c>
itself. If multiple archives require unpacking in a particular order it is
usually simpler to avoid working with <c>${A}</c>.
</p>
</body>
</section>
<section>
<title>Known file formats</title>
<body>
<p>
The <c>unpack</c> function recognizes the following file formats:
</p>
<ul>
<li><c>*.tar</c></li>
<li>
<c>*.gz</c>, <c>*.Z</c>,
<c>*.tar.gz</c>, <c>*.tgz</c>, <c>*.tar.Z</c>
</li>
<li>
<c>*.bz2</c>, <c>*.bz</c>,
<c>*.tar.bz2</c>, <c>*.tbz2</c>, <c>*.tar.bz</c>, <c>*.tbz</c>
</li>
<li><c>*.lzma</c>, <c>*.tar.lzma</c></li>
<li><c>*.xz</c>, <c>*.tar.xz</c>, <c>*.txz</c></li>
<li><c>*.zip</c>, <c>*.ZIP</c>, <c>*.jar</c></li>
<li><c>*.a</c>, <c>*.deb</c></li>
</ul>
<p>
In EAPI 6 and later, filename extensions are matched case-insensitively.
</p>
<important>
Unless the utility needed for unpacking is in the system set, the ebuild must
specify the necessary build time dependency (<c>BDEPEND</c>) for it.
</important>
</body>
</section>
<section>
<title><c>src_unpack</c> actions</title>
<body>
<p>
The following subsections cover different topics which often occur when writing
<c>src_unpack</c> functions.
</p>
<contentsTree/>
</body>
</section>
</chapter>
<include href="vcs-sources/"/>
<include href="rpm-sources/"/>
<include href="other-formats/"/>
</guide>
|
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