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Document two new option helpers:

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- OPT_TYPE_DEPENDS_OFF to add a TYPE_DEPENDS when OPT is off
- OPT_FLAG_OFF=VAL to add the VAL to FLAG when OPT is off

Submitted by:	mat
Reviewed by:	mat
This commit is contained in:
Rene Ladan 2014-01-28 19:21:14 +00:00
parent b3d26bf15c
commit 3b91d7f7f6
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=43682
1 changed files with 36 additions and 0 deletions
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36
en_US.ISO8859-1/books/porters-handbook/book.xml
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@ -4856,6 +4856,24 @@ OPT1_CFLAGS= -DTEST</programlisting>
.if ${PORT_OPTIONS:MOPT1}
USES+= gmake
CFLAGS+= -DTEST
.endif</programlisting>
<para>If <varname>X_ABOVEVARIABLE_OFF</varname> is set then a
flag <literal>ABOVEVARIABLE</literal> will be automatically
set when option <literal>X</literal> is not selected. For
example:</para>
<programlisting>OPTIONS_DEFINE= OPT1
OPT1_USES_OFF=gmake</programlisting>
<para>is equivalent to:</para>
<programlisting>OPTIONS_DEFINE= OPT1
.include &lt;bsd.port.options.mk&gt;
.if ! ${PORT_OPTIONS:MOPT1}
USES+= gmake
.endif</programlisting>
<para>For any of the following dependency type:</para>
@ -4906,6 +4924,24 @@ OPT1_LIB_DEPENDS= liba.so:${PORTSDIR}/devel/a</programlisting>
.if ${PORT_OPTIONS:MOPT1}
LIB_DEPENDS+= liba.so:${PORTSDIR}/devel/a
.endif</programlisting>
<para>If <varname>X_ABOVEVARIABLE_OFF</varname> is set then a
dependency of type <literal>ABOVEVARIABLE</literal> will be
added when option <literal>X</literal> is not selected. For
example:</para>
<programlisting>OPTIONS_DEFINE= OPT1
OPT1_LIB_DEPENDS_OFF= liba.so:${PORTSDIR}/devel/a</programlisting>
<para>is equivalent to:</para>
<programlisting>OPTIONS_DEFINE= OPT1
.include &lt;bsd.port.options.mk&gt;
. if ! ${PORT_OPTIONS:MOPT1}
LIB_DEPENDS+= liba.so:${PORTSDIR}/devel/a
.endif</programlisting>
</sect2>
</sect1>