Why is a const array pointer with -fPIC mapped in ".data"?

["Kazuomi Kato" <kato dot kazuomi at jp dot panasonic dot com>]

I'd like to put an array data in the section ".rodata".
I wish the array data to be unmodified so I used const type for it.
However, inspite of the data specified as const type, I found the case
that the data specified was mapped in the section ".data".  
If a const pointer array is compiled with -fPIC option, const type
to the pointer is ignored and the pointer exists in the ".data".

Do you know why this is happening?
Does the -fPIC option have to do with above phenomenon?

I used the gcc v3.2.1 for ARM.

I'd like to show an example bellow.
===
"test.c"

const char const_rodata0[] = "test0";
const char const_rodata1[] = "test1";
const char const_rodata2[] = "test2";
const char const_rodata3[] = "test3";
const char const_rodata4[] = "test4";
const char const_rodata5[] = "test5";

const char * const array_const[BUF][2] = {　/* specified const to array_const */
  {const_rodata0, const_rodata1},
  {const_rodata2, const_rodata3},
  {const_rodata4, const_rodata5}
};
===

a) compiled with -fPIC option
$ arm_v4t_le-objdump -T libtest_fpic.so
00000a4c g    DO .rodata        00000006  Base        const_rodata1
00808ac8 g    DO .data  00800000  Base        array_const
　/* <== exists in ".data" */

b) compliled without -fPIC option
$ arm_v4t_le-objdump -T libtest_nofpic.so
00000a84 g    DO .rodata        00000006  Base        const_rodata1
00000aac g    DO .rodata        00800000  Base        array_const
　/* <== exits in ".rodata"*/


I`m not too farmiliar with gcc, but I think it looks strange.

The main thing that I want to do is that I'd like to put the unwritable value
into the section ".rodata".
What should I do for putting the array_const in ".rodata"?

Any advice would be appreciated for me,
Kazuomi Kato