svn commit: r53382 - head/en_US.ISO8859-1/books/porters-handbook/porting-dads
Mark Linimon <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.cvs.doc |
|---|---|
| Message-ID | <[email protected]> |
Author: linimon
Date: Sat Sep 7 20:52:18 2019
New Revision: 53382
URL: https://svnweb.freebsd.org/changeset/doc/53382
Log:
Add a new section "Cluster-Specific Considerations" to discourage
the use of -march=native by default.
Approved by: mat
Differential Revision: D20885
Modified:
head/en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml
Modified: head/en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml
==============================================================================
--- head/en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml Fri Sep 6 16:23:42 2019 (r53381)
+++ head/en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml Sat Sep 7 20:52:18 2019 (r53382)
@@ -569,6 +569,24 @@ cc -o someprogram source1.o source2.o -L/usr/local/lib
</listitem>
</itemizedlist>
</sect2>
+
+ <sect2 xml:id="dads-arch-cluster">
+ <title>Cluster-Specific Considerations</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>Some ports attempt to tune themselves to the
+ exact machine they are being built on by specifying
+ <literal>-march=native</literal> to the compiler.
+ This should be avoided: either list it under an
+ off-by-default option, or delete it entirely.</para>
+
+ <para> Otherwise, the default package produced by the
+ build cluster might not run on every single machine
+ of that <varname>ARCH</varname>.</para>
+ </listitem>
+ </itemizedlist>
+ </sect2>
</sect1>
<sect1 xml:id="dads-deprecated">
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