Build fails in PowerPC

[Manoel Rebelo Abraches]

Mainline grub failed to build in PowerPC with the following error:

gcc -DHAVE_CONFIG_H -I. -I..  -Wall -W -I./include -DGRUB_UTIL=1
-DGRUB_LIBDIR=\"/usr/local/lib/grub\" -DLOCALEDIR=
\"/usr/local/share/locale\"  -DGRUB_MACHINE_IEEE1275=1
-DMACHINE=POWERPC_IEEE1275 -DGRUB_FILE=\"grub-core/partmap/gpt.c\" -I.
-I.. -I. -I.. -I../include -I./include -I../grub-core/gnulib
-I../grub-core/lib/libgcrypt_wrap    -Wno-undef -Wno-sign-compare
-Wno-unused -D_GL_UNUSED="__attribute__ ((unused))" -Wno-error
-Wno-missing-field-initializers   -MT grub-core/partmap/libgrub_a-gpt.o
-MD -MP -MF grub-core/partmap/.deps-util/libgrub_a-gpt.Tpo -c -o
grub-core/partmap/libgrub_a-gpt.o `test -f 'grub-core/partmap/gpt.c' ||
echo '../'`grub-core/partmap/gpt.c

../grub-core/partmap/gpt.c:36: error: initializer element is not
constant
../grub-core/partmap/gpt.c:36: error: (near initialization for
‘grub_gpt_partition_type_bios_boot.data1’)
../grub-core/partmap/gpt.c:36: error: braced-group within expression
allowed only inside a function
../grub-core/partmap/gpt.c:36: error: braced-group within expression
allowed only inside a function
-------------------------------------------------------------------
That is the code that fails in gpt.c 
static const grub_gpt_part_type_t grub_gpt_partition_type_empty =
GRUB_GPT_PARTITION_TYPE_EMPTY;

GRUB_GPT_PARTITION_TYPE_EMPTY is define in include/grub/gpt_partition.h
as

#define GRUB_GPT_PARTITION_TYPE_EMPTY \
  { 0x0, 0x0, 0x0, \
    { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } \
  }
----------------------------------------------------------------------------
This code compiles fine in x86, is that a gcc bug? I'm using gcc 4.4.3


-- 
Best Regards,

Manoel Rebelo Abranches
Software engineer
IBM - Linux Technology Center - Brazil