Date: Thu, 2 Apr 2015 23:55:05 +0000 (UTC) From: Eitan Adler <eadler@FreeBSD.org> To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r46434 - head/en_US.ISO8859-1/articles/custom-gcc Message-ID: <201504022355.t32Nt5as073933@svn.freebsd.org>
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Author: eadler Date: Thu Apr 2 23:55:04 2015 New Revision: 46434 URL: https://svnweb.freebsd.org/changeset/doc/46434 Log: custom-gcc: modernize - use pkg instead of directly installing from ports - reduce references to old versions of gcc, and make the article more future-proof - now that we either have a modern version of gcc or clang in base / as the package building compiler, the impact of binary perf is no longer relevant. really, this article should either move into the handbook or be removed. Modified: head/en_US.ISO8859-1/articles/custom-gcc/article.xml Modified: head/en_US.ISO8859-1/articles/custom-gcc/article.xml ============================================================================== --- head/en_US.ISO8859-1/articles/custom-gcc/article.xml Thu Apr 2 23:44:36 2015 (r46433) +++ head/en_US.ISO8859-1/articles/custom-gcc/article.xml Thu Apr 2 23:55:04 2015 (r46434) @@ -55,7 +55,7 @@ <title>Prerequisites</title> <sect2 xml:id="installing-binutils"> - <title>Installing binutils from ports</title> + <title>Installing binutils and gcc</title> <para>To make use of all of the new features in the latest <application>GCC</application> versions, the latest version of @@ -69,24 +69,19 @@ <application>binutils</application> using the &os; ports tree, issue the following command:</para> - <screen>&prompt.root; <userinput>cd /usr/ports/devel/binutils && make install</userinput></screen> - </sect2> - - <sect2 xml:id="installing-gcc"> - <title>Installing GCC from ports</title> + <screen>&prompt.root; <userinput>pkg install devel/binutils</userinput></screen> <para>The &os; ports tree offers several new versions of - <application>GCC</application>. The following example is for - the stable version 4.4. However, it is possible to install - previous or later development versions (e.g. - <package>lang/gcc43</package> or - <package>lang/gcc45</package>).</para> + <application>GCC</application>. The default version is called + <package>lang/gcc</package>. Other versions can be found + with + <screen>&prompt.user; <userinput>pkg search gcc</userinput></screen> + </para> <para>To install one of the mentioned - <application>GCC</application> ports, run the following - command:</para> + <application>GCC</application> ports, run:</para> - <screen>&prompt.root; <userinput>cd /usr/ports/lang/<replaceable>gcc44</replaceable> && make install</userinput></screen> + <screen>&prompt.root; <userinput>pkg install <replaceable>lang/gcc</replaceable></userinput></screen> </sect2> </sect1> @@ -203,23 +198,4 @@ CPP=cpp44 <programlisting>.if empty(.CURDIR:M/usr/ports/net/openldap*) && empty(.CURDIR:M/usr/ports/xxx/yyy) && ...</programlisting> </sect2> </sect1> - - <sect1 xml:id="performance-imparct"> - <title>Impact on the binary performance</title> - - <para>Using <application>GCC</application> version 4.4 with - <acronym>SSSE3</acronym> instruction set enabled (if supported by - the <acronym>CPU</acronym>) may yield up to 10% average increase - in binary performance. In certain tests, the results show - more than a 20% performance boost (e.g. in multimedia - processing).</para> - - <para>The table located at <uri xlink:href="http://people.freebsd.org/~mm/benchmarks/perlbench/">http://people.freebsd.org/~mm/benchmarks/perlbench/</uri>; - shows a comparison of <application>GCC</application> versions - currently available in base &os; system, - <application>GCC</application> version 4.3 and - <application>GCC</application> version 4.4 with various - combinations of <literal>CFLAGS</literal> using the perlbench - benchmark suite.</para> - </sect1> </article>
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