powerpc allnoconfig

[Stephen Rothwell]

Hi Andrew,

On Mon, 2 Mar 2009 21:38:01 -0800 Andrew Morton <akpm at linux-foundation.org> wrote:
>
> > I think we need a better bug report :-)
> > Kernel version?
> 
> Current mainline.
> 
> > What error do you get now?
> 
> Same as before.
> 
> > allmodconfig and defconfig turn CONFIG_PPC64 on.  allnoconfig turns it
> > off so you are trying to build a 32 bit kernel with a 64 bit compiler.
> 
> Oh.  Well that will tear it.
> 
> How does one prepare a powerpc64 allnoconfig?

Like above.

See this is what happens for me:

$ git describe
v2.6.29-rc6-305-g2450cf5
$ /home/sfr/kernels/cross/bin/powerpc64-linux-gcc -v
Using built-in specs.
Target: powerpc64-linux
Configured with: /home/sfr/kernels/tools/gcc-4.3.2/configure --target=powerpc64-linux --enable-targets=all --prefix=/home/sfr/kernels/cross --with-mpfr=/usr --enable-languages=c --without-headers --enable-sjlj-exceptions --with-system-libunwind --disable-nls --disable-threads --disable-shared --disable-libmudflap --disable-libssp --disable-libgomp --disable-decimal-float --enable-checking=release
Thread model: single
gcc version 4.3.2 (GCC) 
$ mkdir ../powerpc_allnoconfig
$ echo CONFIG_PPC64=y >../powerpc64_allnoconfig
$ KCONFIG_ALLCONFIG=../powerpc64_allnoconfig make O=../powerpc_allnoconfig ARCH=powerpc CROSS_COMPILE=/home/sfr/kernels/cross/bin/powerpc64-linux- allnoconfig
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/basic/docproc
  HOSTCC  scripts/basic/hash
  GEN     /home/sfr/kernels/powerpc_allnoconfig/Makefile
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/kxgettext.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/lex.zconf.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf -n arch/powerpc/Kconfig
#
# configuration written to .config
#
$ make O=../powerpc_allnoconfig ARCH=powerpc CROSS_COMPILE=/home/sfr/kernels/cross/bin/powerpc64-linux- vmlinux
  GEN     /home/sfr/kernels/powerpc_allnoconfig/Makefile
scripts/kconfig/conf -s arch/powerpc/Kconfig
  Using /home/sfr/kernels/work as source for kernel
  GEN     /home/sfr/kernels/powerpc_allnoconfig/Makefile
  CHK     include/linux/version.h
  UPD     include/linux/version.h
  CHK     include/linux/utsrelease.h
  UPD     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-powerpc
  CC      kernel/bounds.s
  GEN     include/linux/bounds.h
  CC      arch/powerpc/kernel/asm-offsets.s
  GEN     include/asm/asm-offsets.h
  CALL    /home/sfr/kernels/work/scripts/checksyscalls.sh
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/file2alias.o
	.
	.
	.
  CC      kernel/sysctl.o
/home/sfr/kernels/work/kernel/sysctl.c:103: warning: 'one' defined but not used
	.
	.
	.
  LD      vmlinux.o
  MODPOST vmlinux.o
WARNING: modpost: Found 2 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
  KSYM    .tmp_kallsyms1.S
  AS      .tmp_kallsyms1.o
  LD      .tmp_vmlinux2
  KSYM    .tmp_kallsyms2.S
  AS      .tmp_kallsyms2.o
  LD      vmlinux
  SYSMAP  System.map
  SYSMAP  .tmp_System.map
$ grep CONFIG_PPC64 ../powerpc_allnoconfig/.config
CONFIG_PPC64=y
$ file ../powerpc_allnoconfig/vmlinux
../powerpc_allnoconfig/vmlinux: ELF 64-bit MSB executable, 64-bit PowerPC or cisco 7500, version 1 (SYSV), statically linked, not stripped

So, I can only imagine it is your toolchain that is letting you down.
What is your host machine?  Can I send you a new toolchain? (Mine are only
good for building kernels - they have no libraries - they are build by a
script I got from Segher Boessenkool.)

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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