Hi, On Tue, Feb 12, 2013 at 07:55:42PM +0800, Paul Wise wrote: > Which software is this and why does it need itself to build? Is it a compiler?
There are many examples of source packages that build depend on binary packages they build. This includes languages like python, vala, sml, freepascal and haskell. But besides those simple cycles there are other cycles of length 2 when taking whole installation sets into account. For example src:pkg-config indirectly build depends on pkg-config because src:pkg-config build depends on libglib2.0-dev which depends on pkg-config. As the subject mentions bootstrapping, this extended type of self-cycle is of just as much importance as the first type mentioned initially. Here are all cycles of length two (both types) in Debian Sid as of January 2013. Each cycle contains one source package and one of its build dependencies. Sometimes those build dependencies are directly built by the source package itself (first type) and sometimes those build dependencies need binary packages the source package builds to be installed. texlive-latex-base -> src:libtasn1-3 gtk-doc-tools -> src:libtasn1-3 libldap2-dev -> src:cyrus-sasl2 libpq-dev -> src:cyrus-sasl2 heimdal-multidev -> src:cyrus-sasl2 heimdal-dev -> src:openldap gtk-doc-tools -> src:gnutls26 texlive-latex-base -> src:libgcrypt11 texlive-generic-recommended -> src:libgcrypt11 libdbus-glib-1-dev -> src:dbus python-dbus -> src:dbus libgtk2.0-dev -> src:avahi libgtk-3-dev -> src:avahi python-gtk2 -> src:avahi xfonts-utils -> src:libfontenc ghostscript -> src:cups default-jdk -> src:java-atk-wrapper src:python2.7 -> python lsb-release -> src:python2.7 gdb -> src:python2.7 openjade1.3 -> src:opensp docbook-dsssl -> src:opensp ghostscript -> src:ijs docbook-utils -> src:ijs src:colord -> libgtk-3-dev kdelibs5-dev -> src:libproxy libwebkitgtk-dev -> src:libproxy libphonon-dev -> src:phonon-backend-gstreamer libavformat-dev -> src:x264 libffms2-dev -> src:x264 libopencv-dev -> src:libav libcv-dev -> src:libav libgtk-3-dev -> src:d-conf valac -> src:vala-0.16 gcj-jdk -> src:ecj gcj-4.7-jdk -> src:ecj python-matplotlib -> src:python-numpy fp-utils-2.6.0 -> src:fpc fp-compiler-2.6.0 -> src:fpc fp-units-base-2.6.0 -> src:fpc fp-units-fcl-2.6.0 -> src:fpc mlton -> src:mlton src:sbcl -> sbcl src:alex -> alex gnat -> src:gnat-4.6 gforth -> src:gforth src:happy -> happy src:hscolour -> haskell-devscripts ghc -> src:ghc libglib2.0-dev -> src:pkg-config cheers, josch -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20130212124038.GA28938@hoothoot