Johnny Hughes wrote: > On Fri, 2007-02-16 at 16:53 +0100, Martin Hamant wrote: >> Hi >> >> I want to recompile some RPMs (my own) for x86_64 arch from my i386 >> compatible build host (because of hardware restriction/funds).Is anyone >> ever done this ? After a google search, it seems not so easy... i just >> found this: http://www.speedblue.org/cross_compilation/ but haven't >> tried it yet (i would have to convert these to RPM first). >> >> How is it done for Centos SRPMS rebuilds ? is it a different >> hardware for each target arch ? > > This will not be easy to do. > > You can fairly easily build a cross compiler ... HOWEVER > > You are also going to need to install packages that are BuildRequires > for the packages that you want to build (so you can compile against > them) ... and the xxxxxxx-devel.x86_64 files (the ones with the headers) > are going to all REQUIRE the xxxxxxx.x86_64 packages too. > > It is almost impossible to do this without installing the x86_64 > distro ... and that requires an x86_64 capable processor. > > You might be able to emulate it (maybe qemu), but by the time you do > that it would have been cheaper and easier to have spent $300.00 and > obtained a cheap machine to do it on. It might also be possible to build a cross compiler, then do your "make && make install" from the source tree to put the binaries someplace, maybe /tmp/Build/package, and to construct a spec file that will take those binaries and create an rpm using those as "data" files. It's the sort of thing you'd do to transform a tarball of proprietary binaries into an rpm. In the build environment, you do away with all the benefits of rpm, but it might work. -- Cheers John -- spambait 1aaaaaaa at coco.merseine.nu Z1aaaaaaa at coco.merseine.nu Please do not reply off-list