Base System Build Improvements

From owner-svn-doc-head@freebsd.org Sun Jan 17 03:02:26 2016 Return-Path: Delivered-To: svn-doc-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5F035A85761; Sun, 17 Jan 2016 03:02:26 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1B96A1CA7; Sun, 17 Jan 2016 03:02:26 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u0H32PCA016644; Sun, 17 Jan 2016 03:02:25 GMT (envelope-from bjk@FreeBSD.org) Received: (from bjk@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u0H32PfY016643; Sun, 17 Jan 2016 03:02:25 GMT (envelope-from bjk@FreeBSD.org) Message-Id: <201601170302.u0H32PfY016643@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bjk set sender to bjk@FreeBSD.org using -f From: Benjamin Kaduk Date: Sun, 17 Jan 2016 03:02:25 +0000 (UTC) To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r48039 - head/en_US.ISO8859-1/htdocs/news/status X-SVN-Group: doc-head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-doc-head@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for the doc tree for head List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 17 Jan 2016 03:02:26 -0000 Author: bjk Date: Sun Jan 17 03:02:24 2016 New Revision: 48039 URL: https://svnweb.freebsd.org/changeset/doc/48039 Log: Add entry on (base) buildsystem updates from bdrewery Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Sun Jan 17 02:49:28 2016 (r48038) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Sun Jan 17 03:02:24 2016 (r48039) @@ -2669,4 +2669,71 @@ of the old routing API were converted to use the new API.

+ + + Base System Build Improvements + + + + + Bryan + Drewery + + bdrewery@FreeBSD.org + + + + + &os;-Arch Post Describing Plans + BSDCan 2014 META_MODE Presentation + WITH_FAST_DEPEND Details + WITH_CCACHE_BUILD Details + + + +

&a.bdrewery; (bdrewery@) has been working to improve the + build framework as well as buildworld build times. The build + system has largely been untouched by large-scale changes for many + years. Most of the effort has been on improving the recent + META_MODE merge that was presented at BSDCan 2014. This + is a new build system that is not currently enabled by default but + brings many benefits. Beyond that, some highlights of the work + changing buildworld are:

+ +

WITH_FAST_DEPEND, which avoids calling + "mkdep" during the make depend phase and + instead generates dependency files during compilation. The old + scheme was pre-processing all source files twice. The new version + saves 16-35% in build times.
WITH_CCACHE_BUILD adds built-in ccache support, + avoiding many of the historical pitfalls of changing CC + in make.conf to use ccache.
Many improvements for parallelization of the build.
LIBADD improvements to ensure proper usage of + this tool to replace duplicate LDADD and DPADD + statements. Further work is underway to reduce overlinking.
A lot of cleanup of improper framework usage.
Ensuring that installing files from the build tree fails + if the destination directory is missing, rather than installing a + file as the directory name.

+ + + + EMC / Isilon Storage Division + + + + +

See the &os;-arch mail for more information on planned + work.

+ + +