compiling kernel 2.6.18 fails: -m64 not supported[SOLVED]

[pindar]

Hi,

I was trying to compile kernel 2.6.18 to finally get sound on my G5, but I get these errors:

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 make
:0: error: -m64 not supported in this configuration
:0: error: -m64 not supported in this configuration
/usr/src/linux-2.6.18-gentoo-r1/scripts/gcc-version.sh: line 13: printf: #: invalid number
/usr/src/linux-2.6.18-gentoo-r1/scripts/gcc-version.sh: line 13: printf: #: invalid number
/bin/sh: line 0: [: too many arguments
:0: error: -m64 not supported in this configuration
:0: error: -m64 not supported in this configuration
/usr/src/linux-2.6.18-gentoo-r1/scripts/gcc-version.sh: line 13: printf: #: invalid number
/usr/src/linux-2.6.18-gentoo-r1/scripts/gcc-version.sh: line 13: printf: #: invalid number
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/basic/docproc
  CC      arch/powerpc/kernel/asm-offsets.s
arch/powerpc/kernel/asm-offsets.c:1: error: -m64 not supported in this configuration
make[1]: *** [arch/powerpc/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2

Here's my gcc:

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gcc-config -l
 [1] powerpc-unknown-linux-gnu-4.1.1 *

I'm on ppc64 with 32 bit userland:

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ls -al /etc/make.profil* 
lrwxrwxrwx 1 root root 76 Jul 14 13:23 /etc/make.profile -> /usr/portage/profiles/default-linux/ppc/ppc64/2006.1/32bit-userland/970/pmac

Any clues? Thanks

Thomas

[jaeger63]

You have to edit the CROSS-COMPILE line in the makefile to compile the kernel from a 32-bit Userland:

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Important: In case you are in 32-bit userland, you must edit the top
level Makefile in /usr/src/linux and change the CROSS_COMPILE option to 
CROSS_COMPILE ?= powerpc64-unknown-linux-gnu-. You must do this before you run 
make menuconfig or it may result in kernel compilation problems.

It's in the fine print in Chapter 7 of the handbook:
http://www.gentoo.org/doc/en/handbook/h ... t=1&chap=7

[pindar]

You have to edit the CROSS-COMPILE line in the makefile to compile the kernel from a 32-bit Userland:

Code: Select all

Important: In case you are in 32-bit userland, you must edit the top
level Makefile in /usr/src/linux and change the CROSS_COMPILE option to 
CROSS_COMPILE ?= powerpc64-unknown-linux-gnu-. You must do this before you run 
make menuconfig or it may result in kernel compilation problems.

It's in the fine print in Chapter 7 of the handbook:
http://www.gentoo.org/doc/en/handbook/h ... t=1&chap=7

Thanks for being generous and saying it's in the "fine print." Now I remember I had to do this last time, too! Works now wonderfully, thanks a lot!

Thomas