/usr/src/gcc-4.7/debian/patches/aarch64-hash-style-gnu.diff is in gcc-4.7-source 4.7.4-3ubuntu12.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # DP: Link using --hash-style=gnu (aarch64).
2012-11-17 Matthias Klose <doko@ubuntu.com>
* config/aarch64/aarch64-linux.h (LINK_SPEC): Add --hash-style=gnu.
Index: b/src/gcc/config/aarch64/aarch64-linux.h
===================================================================
--- a/src/gcc/config/aarch64/aarch64-linux.h
+++ b/src/gcc/config/aarch64/aarch64-linux.h
@@ -32,6 +32,7 @@
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
#define LINUX_TARGET_LINK_SPEC "%{h*} \
+ --hash-style=gnu \
%{static:-Bstatic} \
%{shared:-shared} \
%{symbolic:-Bsymbolic} \
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