+++ Guillem Jover [2015-05-10 04:53 +0200]: > Hi! > > “Recently” when adding support for «-jauto» to dpkg-buildpackage, I > noticed that the semantics for the -j option were quite unorthodox. > The value from the DEB_BUILD_OPTIONS paralle= option takes precedence > and overrides any explicit value passed on the commend-line via -j, > (when -j should be overriding the environment instead). > > I'm not entirely sure what I was thinking when I did that change in > dpkg 1.14.15 (2008-01), but that specific part seems entirely broken. > But even then given that this behavior has been like that for a long > time now, I'm a bit hesitant to suddenly change it. > > If you happen to depend on this behavior and stuff would break due to > that change, please shout and I'll deploy a staged transition with > warnings and similar, otherwise I'll just go ahead with the change.
I'm happy if you change this - it seems like fixing a bug to me, but I will just throw in this observation from recent arm64 archive-rebuilds, that -j and DEB_BUILD_OPTIONS=parallel= are not exactly the same. Is that expected? If not then it should perhaps be considered/investigated in case other builds are sensitive to the difference? here is a message from Ed Grimley-Evans, checking the FTBFS: ----------- freecdb illustrates the problem repeatably: works: DEB_BUILD_OPTIONS=parallel=4 dpkg-buildpackage -b fails: dpkg-buildpackage -b -j4 I haven't worked out precisely what goes wrong, but it seems to have something to do with a version of "debian/implicit" from 2005/2006, which was perhaps written with the assumption that dependencies are built one at a time in order. The whole package is that old, in fact. Anyway, what's the bug? Are packages that won't build with "dpkg-buildpackage -j4" buggy, or is it a bug that man pages suggest using "dpkg-buildpackage -j4" rather than "DEB_BUILD_OPTIONS=parallel=4 dpkg-buildpackage -b"? ---------------- This seems to be reproducible even on a dual-core amd64 machine. Wookey -- Principal hats: Linaro, Debian, Wookware, ARM http://wookware.org/ -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150510174924.gu24...@halon.org.uk