64bit: gcc vs. harfbuzz

[Yaakov (Cygwin/X)]

harfbuzz (since at least 0.9.12) is failing to link with gcc-4.8.0-1 on 
x86_64:

http://cygwin-ports.git.sourceforge.net/git/gitweb.cgi?p=cygwin-ports/harfbuzz

.libs/libharfbuzz_la-hb-ot-shape-complex-arabic.o:hb-ot-shape-complex-arabic.cc:(.rdata+0x1c8): 
relocation truncated to fit: R_X86_64_PC32 against 
`.text$_ZNK2OT19SubstLookupSubTable8dispatchINS_18hb_apply_context_tEEENT_8return_tEPS3_j'
[snip duplicates]
.libs/libharfbuzz_la-hb-ot-shape-complex-arabic.o:hb-ot-shape-complex-arabic.cc:(.rdata+0x1ec): 
relocation truncated to fit: R_X86_64_PC32 against 
`.text$_ZNK2OT11SubstLookup10apply_onceEPNS_18hb_apply_context_tE'
.libs/libharfbuzz_la-hb-ot-shape-complex-arabic.o:hb-ot-shape-complex-arabic.cc:(.rdata+0x1f0): 
additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status

The same package builds successfully on i686 4.5.3 (I'm building 4.7.3 
now to test).


Yaakov