On Sat, Apr 09, 2005 at 12:09:53AM +0200, Rakotomandimby (R12y) Mihamina wrote: > Hello, > > When I build a debian package, and I fill the dsc file: The .dsc file should be created automatically by dpkg-buildpackage, no?
> How would I know the binary will run on all architectures or will only > run on some? Its specified in the filename, which is how you can know by looking at it. > Because, for example, I have some x86 and sparc64 home, and there is an > XFCE package both for x86 and for sparc. If I take a look at the > source.list file, there is no mention of the arch. /etc/apt/sources.list determines the location for Packages.gz, which is a list of binary packages (which are created from source packages as given in a Sources file of similar format to Packages.gz). > - Where does apt look for the architecture to download for? dpkg (and apt, I guess) look at the Packages.gz file, which is for binary packages, not sources. A given binary package (aka a .deb file) is either for a specific architecture, or for every architecture (arch all). If you try to install on a wrong architecture, dpkg will barf (unless you --force-architecture). > - How will I know, when I build a package, that the binary will be arch > specific? (Because I need to correctly fill the "Architecture:" field in > the dsc file!) As above, you probably don't need to fill in that file. But ./debian/control specifies a single "Sources:" line and following information about the source, and one or more "Package:" lines, which determine information about the binary package. "Architecture:" is a necessary field for each Package: line. The architecture on which a package is built is written into a binary-package control file (slightly different from the source control file ./debian/control). Neither dpkg nor apt will look at the filename: dpkg -i foo_i386.deb will work just fine on an alpha, except that the .deb internally will say "Architecture: i386" which is what dpkg cares about. > If I build it on a x86, and if I dont know, have I to suppose it's x86 > specific and wait for some others to compile it on some other arches to > declare it "all arches" ? "Arch: all" means "this binary package may be build on any architecture, and the resulting .deb file will be valid for every architecture". "Arch: any" means "this binary package may be built on any architecture, and the resulting .deb will be valid only on that arch". Justin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
