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Add section on EXTRACT_DEPENDS.

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PR:		61361, part of 56452
Submitted by:	schweikh, Kang Liu <liukang@bjpu.edu.cn>
This commit is contained in:
Jens Schweikhardt 2004-01-20 20:36:37 +00:00
parent f993e774b2
commit 65578e98e3
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=19759
1 changed files with 27 additions and 1 deletions
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en_US.ISO8859-1/books/porters-handbook/book.sgml
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@ -2967,6 +2967,32 @@ PATCHFILES= patch1:test</programlisting>
same as <makevar>DEPENDS_TARGET</makevar>.</para>
</sect2>
<sect2>
<title><makevar>EXTRACT_DEPENDS</makevar></title>
<para>This variable specifies executables or files this port
requires for extraction. Like the previous, it is a list of
<replaceable>path</replaceable>:<replaceable>dir</replaceable><optional><replaceable>:target</replaceable></optional>
tuples. For example, <programlisting>EXTRACT_DEPENDS=
unzip:${PORTSDIR}/archivers/unzip</programlisting> will check
for an executable called <command>unzip</command>, and descend
into the <filename>archivers/unzip</filename> subdirectory of
your ports tree to build and install it if it is not found.</para>
<para>The dependency is checked from within the
<maketarget>extract</maketarget> target. The
<replaceable>target</replaceable> part can be omitted if it is the
same as <makevar>DEPENDS_TARGET</makevar>.</para>
<note>
<para>Use this variable only if the extraction does not already
work (the default assumes <command>gzip</command>) and cannot
be made to work using <makevar>USE_ZIP</makevar> or
<makevar>USE_BZIP2</makevar> described in <xref
linkend="use-vars">.
</note>
</sect2>
<sect2>
<title><makevar>DEPENDS</makevar></title>
@ -2980,7 +3006,7 @@ PATCHFILES= patch1:test</programlisting>
same as <makevar>DEPENDS_TARGET</makevar>.</para>
</sect2>
<sect2>
<sect2 id="use-vars">
<title><makevar>USE_<replaceable>*</replaceable></makevar></title>
<para>A number of variables exist in order to encapsulate common