[lkml]   [2005]   [Dec]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: i386 -> x86_64 cross compile failure (binutils bug?)
    On Fri, 9 Dec 2005, Lee Revell wrote:

    > I'm trying to build an x66-64 kernel on a 32 bit system (Ubuntu 5.10).
    > I added -m64 to the CFLAGS as per the gcc docs. But the build fails
    > with:
    > $ make ARCH=x86_64
    > [...]
    > CC init/initramfs.o
    > CC init/calibrate.o
    > LD init/built-in.o
    > CHK usr/initramfs_list
    > CC arch/x86_64/kernel/process.o
    > CC arch/x86_64/kernel/signal.o
    > AS arch/x86_64/kernel/entry.o
    > arch/x86_64/kernel/entry.S: Assembler messages:
    > arch/x86_64/kernel/entry.S:204: Error: cannot represent relocation type BFD_RELOC_X86_64_32S

    Unless ubuntu provides a biarch toolchain (and the fact gcc accepts
    '-m64' means nothing - use 'file' on init/built-in.o), you have to build
    a cross toolchain, (just binutils and gcc), put that on your path, and

    make ARCH=x86_64 CROSS_COMPILE=x86_64-pc-linux-gnu-

    so that the build will use x86_64-pc-linux-gnu-as and friends. You
    should not need to mess with the CFLAGS.

    das eine Mal als Tragödie, das andere Mal als Farce
     \ /
      Last update: 2005-12-09 20:53    [W:0.019 / U:100.532 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site