Package: cdbs
Version: 0.4.52
Severity: normal
Hi,
The Policy Manual now suggests that packages support parallel building
where it makes sense [1]. I have several large packages that can
benefit from parallel builds and I'd like to make it easy to do with
cdbs.
It would be nice if I could either set some variable like
DEB_MAKE_PARALLEL=yes, or use something like
include /usr/share/cdbs/1/rules/parallel.mk
and be finished.
Failing that, I need some way to pass a -jN flag to the initial make
invocation. Note that the recipe given in the Policy Manual -- to set
MAKEFLAGS -- results in the following warning
make[1]: warning: -jN forced in submake: disabling jobserver mode.
which apparently is sub-optimal [2]. The issue in that MAKEFLAGS is
applied to each recursive make. The recommended practice is to supply
-jN *only* to the initial invocation of make.
I did not find in cdbs documentation how to pass a flag only to the
initial make. In discussion on debian-devel, the following was
suggested [3]:
DEB_MAKE_BUILD_TARGET = -j$(NUMJOBS) ACTUAL_BUILD_TARGET
The poster suggested it might be an ugly hack and indeed, this
subverts the suggested intent of DEB_MAKE_BUILD_TARGET. But it does
work, at least for my purposes (using class/makefile.mk). Maybe
adding a parallel DEB_MAKE_BUILD_OPTIONS or something is the way to
go?
Likely you have other, better ideas.
Cheers,
-Steve
[1] http://www.debian.org/doc/debian-policy/ch-source.html#s-debianrules-options
[2] http://make.paulandlesley.org/jobserver.html
[3] http://lists.debian.org/debian-devel/2008/10/msg00317.html
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.26-1-amd64 (SMP w/4 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 cdbs depends on:
ii debhelper 7.0.17 helper programs for debian/rules
Versions of packages cdbs recommends:
ii autotools-dev 20080123.2 Update infrastructure for config.{
Versions of packages cdbs suggests:
ii devscripts 2.10.40 scripts to make the life of a Debi
ii doc-base 0.8.16 utilities to manage online documen
-- no debconf information
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