2.6.31.2 broke UML 64-bit build (2.6.31 was fine)

[Antoine Martin]

tar -jxf linux-2.6.31.2.tar.bz2
cd linux-2.6.31.2
cp ../.config ./
make ARCH=um
[...]
  MODPOST vmlinux.o
  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/../../../../x86_64-pc-linux-gnu/bin/ld:arch/um/kernel/vmlinux.lds:1:
ignoring invalid character `#' in expression
/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/../../../../x86_64-pc-linux-gnu/bin/ld:arch/um/kernel/vmlinux.lds:1:
syntax error
collect2: ld returned 1 exit status
  KSYM    .tmp_kallsyms1.S
nm: '.tmp_vmlinux1': No such file
No valid symbol.
make: *** [.tmp_kallsyms1.S] Error 1

Sorry, not had time to bisect it.
Tested with gcc 4.1.2 and gcc 4.3.2
Use this config if yours does not exhibit the problem:
http://uml.devloop.org.uk/kernels/kernel64-2.6.31.config

Cheers
Antoine
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