EDOS-BUILDDEBCHECK(1)					      General Commands Manual					     EDOS-BUILDDEBCHECK(1)

NAME

       Edos-builddebcheck - Check satisfiability of Debian package build-dependencies

SYNOPSIS

       edos-builddebcheck [option] ... Packagefile Sourcepackagefile

DESCRIPTION

       edos-builddebcheck  reads a set of Debian package descriptions from the file Packagefile, each of which is in the format of deb-control(5),
       and a set of source package descriptions from the file Sourcepackagefile. All packages described in the file Packagefile must have the same
       value of their Architecture (if it is different from all).

       For  instance,  the Packages and Sources files as found on a Debian mirror server, or in the directory /var/lib/apt/lists/ of a Debian sys-
       tem, are suitable as input files.

       edos-builddebcheck verifies for every of the source packages (from Sourcepackagefile) whether its build-dependencies, build-indep-dependen-
       cies  and  build-conflicts can be satisfied from the binary packages provided in Packagefile. Only build-relations that apply to the archi-
       tecture (see below on how the architecture is determined) are taken into account.

       Note that this is not the same thing as checking whether a distribution can be rebuild from scratch, for several reasons:

       1.  No actual compilation is taking place, this tool only does a static analysis of package relationships.

       2.  The binary packages in Packages are not necessarily those that are the result of the compilation of the source packages in  Sourcepack-
       agefile.

       3.  We  do  not	check for cycles. For instance, suppose that we have source packages a and b both generating one binary package of respec-
       tively the same name, and that a build-depends on b and b build-depends on a. Then we can not rebuild the  set  of  packages  from  scratch
       because	of  the cycle. However, if we already have binary packages a and b then we can recompile both of them. Consequently, edos-buildde-
       bcheck will not report an error in this case.

       4. The underlying logical machine does a complete analysis of alternatives, and might report satisfiability of constraints in  case  actual
       tools (like apt) fail to find a solution.

       Build-essential	packages  are ignored in unversioned build-dependencies.  The (architecture dependant) list of build-essential packages is
       read from the configuration file.  If that file is not available than an architecture independent default value is used.

OPTIONS

       -a, --architecture architecture
	      Check for compilation on architecture. Usually it is not necessary to specify the architecture since it  can  be	derived  from  the
	      Packages file.

       -be, --binexplain
	      Add  all explanations why build-dependencies are not satisfiable. Without that option some of these explanations may be missing from
	      the output in case a source package build-depends on a binary package that exists in Packagefile file but that edos-debchecks  finds
	      not to be installable inside Packagefile.

FILES

       /etc/edos-builddebcheck.conf
	      Configuration file for edos-builddebcheck

AUTHOR

       Edos-builddebcheck  has	been  written  by Stefano Zacchiroli <zack@debian.org> and Ralf Treinen <treinen@debian.org>. It heavily relies on
       edos-debcheck which has been written by Jerome Vouillon for the EDOS project.

SEE ALSO

       deb-control(5),edos-debcheck(1)

EDOS
								    2010-04-22						     EDOS-BUILDDEBCHECK(1)