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I think you are mistaken. I have built plenty of both 32-bit and 64-bit binaries on Ubuntu. They offer both lib32 and lib64 directories. Again, there is no need for a chroot... On 10/16/07, Jarod Wilson <[hidden email]> wrote: > On Oct 16, 2007, at 11:38, Jerry Feldman wrote: > > > On Tue, 16 Oct 2007 09:52:56 -0400 > > Jarod Wilson <[hidden email]> wrote: > > > >> A very important distinction to make here: some distributions > >> (including Fedora) have gone to great lengths to try to sanely > >> support multi-arch (mixing of 64-bit and 32-bit applications/ > >> libraries/etc), while others (including Ubuntu) simply punted and > >> require you to set up a chroot to run anything 32-bit on top of a 64- > >> bit environment. Thus its possible to run pretty much any 32-bit > >> userspace application on a 64-bit Fedora install with minimal effort. > > > > Hi Jarod, > > I was wondering if you could elaborate a bit more on this. As I have a > > few 32-bit things running on Ubuntu 64. Certainly one of the things > > you > > need is to have both the 32-bit as well as 64-bit libraries. As I > > documented, this morning I installed wine, which is a 32-bit > > executable. > > As I now understand it, there's actually a ia32-libs package or some > such thing that provides a few essential 32-bit libs for 64-bit > Ubuntu systems, so my blanket statement about requiring a chroot for > anything 32-bit wasn't quite right. However, outside of the scope of > binaries that are built to use those compat libs, 32-bit apps on a 64- > bit Ubuntu system require a 32-bit chroot, as the bulk of 32-bit and > 64-bit libraries are identically named and placed in identical paths > on the file system (typically, /usr/lib/libfoo.so.1). What Fedora > opted to do was put all 64-bit libraries in a different path (/usr/ > lib64/libfoo.so.1), which allows concurrent installation of both the > 32-bit and 64-bit varieties of the very same libraries, and the 32- > bit libraries you install are laid down by the exact same packages > you'd install on a pure 32-bit system. > > > -- > Jarod Wilson > [hidden email] > > >
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