Below are two tables showing the two problem classes that prevent generation of a build order for cross compilation. This example tries to build all 232 base source packages on amd64 for armhf in current Debian sid. The source package selection was made according to the problematic packages found by bootstrap.debian.net
A machine parsable version can be retrieved in json format
The source packages in the last column cannot satisfy their (possibly transitive) cross build dependencies because the binary package in the first column. This is mostly because the binary package in the first column is Multi-Arch:no. Some of these packages need to be Multi-Arch:foreign instead. The depchains column shows the dependency chain from the source package to the binary package where applicable.
The source packages in the second column cannot satisfy their cross build dependencies because the binary packages in the first column cannot be installed together. The build arch binary package often gets pulled in through build-essential. The problem can be fixed by depending on a cross variant of the respective tool instead (gcc-${host} syntax). This table often contains false entries of conflicts that are only produced by Multi-Arch:same version skews in Debian unstable. The two depchain columns show the paths from the source package in the second column to each of the conflicting binary packages in the first column, respectively. Sometimes, there exist multiple dependency chains exist.
generated: 2014-11-09T16:18:27.083669
The JSON data used to generate these pages was computed using botch, the bootstrap/build ordering tool chain. The source code of botch can be redistributed under the terms of the LGPL3+ with an OCaml linking exception. The source code can be retrieved from https://gitorious.org/debian-bootstrap/botch
The html pages were generated by code which can be retrieved from https://gitorious.org/debian-bootstrap/bootstrap_debian_net and which can be redistributed under the terms of the AGPL3+
For questions and bugreports please contact j [dot] schauer [at] email [dot] de.