Merge pull request #334 from proller/arm64

arm64 compile fix

contrib/libzookeeper/src/mt_adaptor.c

@@ -484,7 +484,10 @@ int32_t inc_ref_counter(zhandle_t* zh,int i)
 
 int32_t fetch_and_add(volatile int32_t* operand, int incr)
 {
-#ifndef WIN32
+#if defined(__ARM_ARCH)
+    // this is gcc-specific func https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/_005f_005fatomic-Builtins.html
+    return __atomic_fetch_add(operand, incr, __ATOMIC_RELAXED);
+#elif !defined(WIN32)
     int32_t result;
     asm __volatile__(
          "lock xaddl %0,%1\n"

libs/libcommon/include/common/find_first_symbols.h

@@ -35,6 +35,7 @@ inline bool is_in(char x)
 	return x == s0 || is_in<s1, tail...>(x);
 }
 
+#if defined(__x86_64__)
 template <char s0>
 inline __m128i mm_is_in(__m128i bytes)
 {
@@ -49,6 +50,7 @@ inline __m128i mm_is_in(__m128i bytes)
 	__m128i eq = mm_is_in<s1, tail...>(bytes);
 	return _mm_or_si128(eq0, eq);
 }
+#endif
 
 
 template <char... symbols>