From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Korsgaard Date: Fri, 29 Aug 2014 09:18:15 +0200 Subject: [Buildroot] [PATCH 1/2] pkg-autotools: use --disable-dependency-tracking In-Reply-To: <1409259825-619-1-git-send-email-thomas.petazzoni@free-electrons.com> (Thomas Petazzoni's message of "Thu, 28 Aug 2014 23:03:44 +0200") References: <1409259825-619-1-git-send-email-thomas.petazzoni@free-electrons.com> Message-ID: <87tx4vrcg8.fsf@dell.be.48ers.dk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net >>>>> "Thomas" == Thomas Petazzoni writes: > By default, automake does "dependency tracking", which allows the > generated Makefile to contain the necessary dependencies to > automatically rebuild the appropriate C files when included header > files are changed. This dependency tracking is nice when doing active > development on the package, but not really useful when doing a > one-time build of the package. According to automake's > documentation[1], disabling the dependency tracking provides a small > speed-up. > In some very unscientific measurements (i.e repeated only once), we > have noticed a ~3.6% reduction of the total build time of a Buildroot > toolchain after applying this patch. > [1] http://www.gnu.org/software/automake/manual/html_node/Dependency-Tracking.html 3% isn't much, but OK - Committed both to next, thanks. -- Bye, Peter Korsgaard