+/*
+The current Nexus 7 arm-v7a fails with:
+F/MonoDroid( 1568): shared runtime initialization error: Cannot load library: reloc_library[1285]: 37 cannot locate '__sync_val_compare_and_swap_8'
+
+Apple targets have historically being problematic, xcode 4.6 would miscompile the intrinsic.
+*/
+
+#if defined (__arm__) && defined (HAVE_ARMV7)
+#define HAVE_64BIT_CMPXCHG_FALLBACK /* See atomic.c in this directory. */