The Makefile

A quick overview of the debian-cd Makefile: what it does, and how.

Variable setup and checking

Simple sanity checking that all the needed variables from CONF.sh are present and correct, and also set up some more internal variables:

• BUILD_DATE - simply, the date and time of the build
• ARCHES_NOSRC - the list of arches specified, minus source
• SOURCEONLY - set only if we're building source and no binaries
• INC_SOURCE - set if we're building source at all
• lots of variables pointing to the helper scripts
• BDIR - the working dir for temporary files
• ADIR - an alias for APTTMP, as set in CONF.sh
• DB_DIR - points to a debootstrap temp dir under BDIR
• PATH - we add the debootstrap /usr/sbin dir to the path
• LATEST_DB - the full path to the most recent version of debootstrap in the archive

  default:

  There is not a sensible default action for the Makefile (e.g. make all), so simply print a message and return.

  ok:

  Simple sanity checking.

  General initialisation and cleanup

  init:

  Depends on a group of trivial small rules - make the temp dirs as necesssary, and extract the latest debootstrap deb from LATEST_DB above.

  clean: and dir-clean:

  Clean up build tress.

  realclean: and distclean:

  Delete all temporary state.

  Package lists and apt setup

  $(CODENAME)_status:

  Use the (maybe provided) default starting package list for $(CODENAME). If that doesn't exist, fall back to "make status".

  status: and $(ADIR)/status:

  Create an initial list of the packages desired.

  First, for BC and NETINST (aka INSTALLER_CD=1 or INSTALLER_CD=2), simply create an empty list. For other CDs, grab the list of Required/Important/Standard/Base packages from the Packages file.

  Secondly, create/update the temporary apt db using apt-selection.

  Finally, use apt-selection to check the consistency of the standard system in terms of dependencies. If needed, run make correctstatus to add/remove packages.

  correctstatus:

  Add/remove packages as needed to fix up the dependencies.

  apt-update:

  After setting up the default list of packages, run apt-selection update for each of the arches, so we're ready to ask apt to do real work for us.

  deletelist:

  Simple list cleanup

  packagelists:

  Helper for dependencies

  $(BDIR)/rawlist:

  Using debootstrap and the task file specified, generate a "raw" (i.e. not cleanly formatted) list of the packages desired.

  genlist:, $(BDIR)/list

  Clean up the rawlist files ready for use.

  Tree and image building

  image-trees:

  Does a lot of work, via three scripts:

  • Sort the output from genlist into dependency order using list2cds for each arch in turn, outputting to $(BDIR)/packages.$ARCH.
  • Merge the output of those separate package lists (if necessary), outputting to $(BDIR)/packages using merge_package_lists.
  • Now we have a sorted list of (potentially multi-arch) packages ready to start using. Make the temporary trees using that list - call make_disc_trees.pl

  images:

  Using the trees from image-trees:, convert those trees into CD/DVD ISO/jigdo files as required.

  image: and check-number-given:

  If you're short on space, will allow you to create images one ISO at a time - specify CD=n on the make command line to just make CD number n.

  imagesums:

  Use the imagesums script to generate md5sums for the output images.

  Misc targets

  update-popcon

  Update the sorting order for packages using usage stats from popcon.debian.org.

  official_images:

  Simple wrapper that depends on all the needed bits in the right order.

  ---

  (c) Steve McIntyre <steve@einval.com>, December 2006. GPL v2
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