Messages in this thread | | | Date | Fri, 09 Dec 2005 16:37:58 -0600 | From | Jeffrey Hundstad <> | Subject | Re: i386 -> x86_64 cross compile failure (binutils bug?) |
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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 > >
I have successfully done this using Debian/Sid.
1. I changed the linux/Makefile: ARCH ?= x86_64 CROSS_COMPILE ?= x86_x64-linux-
2. The I changed the path to include the following /tmp/lin64/ directory: PATH=/tmp/lin64:$PATH
3. I made a bunch of scripts as follows all in the /tmp/lin64/ directory: x86_x64-linux-ar: #!/bin/bash ar $@
x86_x64-linux-gcc: #!/bin/bash has32=`echo "$@" | grep -- "-m32"` if [ "$has32" = "" ] ; then gcc -m64 $@ else gcc $@ fi
x86_x64-linux-ld: #!/bin/bash ld -m64 $@
x86_x64-linux-nm: #!/bin/bash nm $@
x86_x64-linux-objcopy: #!/bin/bash objcopy $@
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