Package: debhelper Version: 7.4.15 Severity: normal (At first, I though only overriden commands were impacted, but it appears I was wrong)
When e.g. dh_auto_build is called to start the build on a standard project with a Makefile, as you stated on my blog, dh removes the --jobserver-fds= and -j options from MAKEFLAGS. While this can be required to avoid some things from breaking, which i guess is why you did that in the first place, it also means parallel builds can't happen at all under dh, with any setting apparently: $ dpkg-buildpackage -j3 2>/dev/null | grep ^== == debian/rules clean MAKEFLAGS= --jobserver-fds=3,4 -j DEB_BUILD_OPTIONS=parallel=3 ==distclean MAKEFLAGS=w DEB_BUILD_OPTIONS=parallel=3 == debian/rules build MAKEFLAGS= --jobserver-fds=3,4 -j DEB_BUILD_OPTIONS=parallel=3 ==build MAKEFLAGS=w DEB_BUILD_OPTIONS=parallel=3 == debian/rules binary MAKEFLAGS= --jobserver-fds=3,4 -j DEB_BUILD_OPTIONS=parallel=3 ==install MAKEFLAGS=w -- DESTDIR=/tmp/dummy-0.0/debian/dummy DEB_BUILD_OPTIONS=parallel=3 $ DEB_BUILD_OPTIONS=parallel=3 dpkg-buildpackage 2>/dev/null | grep ^== == debian/rules clean MAKEFLAGS= DEB_BUILD_OPTIONS=parallel=3 ==distclean MAKEFLAGS=w DEB_BUILD_OPTIONS=parallel=3 == debian/rules build MAKEFLAGS= DEB_BUILD_OPTIONS=parallel=3 ==build MAKEFLAGS=w DEB_BUILD_OPTIONS=parallel=3 == debian/rules binary MAKEFLAGS= DEB_BUILD_OPTIONS=parallel=3 ==install MAKEFLAGS=w -- DESTDIR=/tmp/dummy-0.0/debian/dummy DEB_BUILD_OPTIONS=parallel=3 The output above comes from the dummy package attached. I think dh_auto_build should (at least) respect DEB_BUILD_OPTIONS's parallel option, and call make with the apropriate flags again, making sure it doesn't contact the jobserver from parent make. Cheers, Mike -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.31-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages debhelper depends on: ii binutils 2.20-6 The GNU assembler, linker and bina ii dpkg-dev 1.15.5.6 Debian package development tools ii file 5.04-1 Determines file type using "magic" ii html2text 1.3.2a-14 advanced HTML to text converter ii man-db 2.5.7-2 on-line manual pager ii perl 5.10.1-11 Larry Wall's Practical Extraction ii perl-base 5.10.1-11 minimal Perl system ii po-debconf 1.0.16 tool for managing templates file t debhelper recommends no packages. Versions of packages debhelper suggests: pn dh-make <none> (no description available) -- no debconf information
dummy_0.0-0.tar.gz
Description: GNU Zip compressed data
