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Oops, cut myself off mid-sentence in that previous comment ... AIWS :
If you are on a RedHat derived system, where /lib/ld-linux.so.2 is
32-bit , you should be OK; if, however, you are on a Gentoo
derived or "my style" system, you need to make sure your 
gcc is compiled with '--enable-multilib' and '--enable-targets=all',
as mine is , and that you have applied something like this patch
to gcc's gcc/config/i386/linux*.h files:
$ gendiff gcc/config '~'
diff -up gcc/config/i386/linux.h~ gcc/config/i386/linux.h
--- gcc/config/i386/linux.h~ 2011年01月14日 18:45:06.000000000 +0000
+++ gcc/config/i386/linux.h 2011年04月05日 22:17:10.000000000 +0100
@@ -92,7 +92,7 @@ along with GCC; see the file COPYING3.
 /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
 #define LINK_EMULATION "elf_i386"
-#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+#define GLIBC_DYNAMIC_LINKER "/lib32/ld-linux.so.2"
 #undef ASM_SPEC
 #define ASM_SPEC \
diff -up gcc/config/i386/linux64.h~ gcc/config/i386/linux64.h
--- gcc/config/i386/linux64.h~ 2011年03月02日 22:35:36.000000000 +0000
+++ gcc/config/i386/linux64.h 2011年04月05日 22:17:33.000000000 +0100
@@ -62,7 +62,7 @@ see the files COPYING3 and COPYING.RUNTI
 When the -shared link option is used a final link is not being
 done. */
-#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+#define GLIBC_DYNAMIC_LINKER32 "/lib32/ld-linux.so.2"
 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
 #if TARGET_64BIT_DEFAULT