Date: Tue, 21 Jul 2015 09:48:48 +0000 (UTC) From: Mathieu Arnold <mat@FreeBSD.org> To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r47032 - head/en_US.ISO8859-1/books/porters-handbook/makefiles Message-ID: <201507210948.t6L9mm5o069356@repo.freebsd.org>
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Author: mat Date: Tue Jul 21 09:48:47 2015 New Revision: 47032 URL: https://svnweb.freebsd.org/changeset/doc/47032 Log: Add a note saying not to use := in *_DEPENDS variables. Approved by: wblock (mentor) Sponsored by: Absolight Differential Revision: https://reviews.freebsd.org/D3109 Modified: head/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml Modified: head/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml ============================================================================== --- head/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml Mon Jul 20 23:33:07 2015 (r47031) +++ head/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml Tue Jul 21 09:48:47 2015 (r47032) @@ -3290,6 +3290,14 @@ ALWAYS_KEEP_DISTFILES= yes other:${PORTSDIR}/lang/other BUILD_DEPENDS= ${MY_DEPENDS} RUN_DEPENDS= ${MY_DEPENDS}</programlisting> + + <important> + <para><emphasis>Do not</emphasis> use <literal>:=</literal> + to assign <varname>BUILD_DEPENDS</varname> to + <varname>RUN_DEPENDS</varname> or vice-versa. All + variables are expanded immediately, which is exactly the + wrong thing to do and almost always a failure.</para> + </important> </sect2> <sect2 xml:id="makefile-build_depends">
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