--- fox-1.7.57/lib/FXAtomic.cpp.orig	2017-02-06 05:34:36.826461208 +0100
+++ fox-1.7.57/lib/FXAtomic.cpp	2017-02-06 05:40:53.793123570 +0100
@@ -404,7 +404,7 @@
   return result;
 #elif (defined(WIN32) && (_MSC_VER >= 1500))
   return (FXptr)_InterlockedExchange((LONG*)ptr,(LONG)v);
-#elif (defined(HAVE_INLINE_ASSEMBLY) && defined(__i386__))
+#elif (defined(HAVE_INLINE_ASSEMBLY) && (defined(__i386__) || (defined(__x86_64) && defined(__ILP32__))))
   FXptr ret=v;
   __asm__ __volatile__("xchgl %0, (%1)\n\t" : "=r"(ret) : "r"(ptr), "0"(ret) : "memory", "cc");
   return ret;
@@ -429,7 +429,7 @@
   return (FXptr)_InterlockedExchangeAdd64((LONGLONG*)ptr,(LONGLONG)v);
 #elif (defined(WIN32) && (_MSC_VER >= 1600))
   return (FXptr)_InterlockedExchangeAdd((LONG*)ptr,(LONG)v);
-#elif (defined(HAVE_INLINE_ASSEMBLY) && defined(__i386__))
+#elif (defined(HAVE_INLINE_ASSEMBLY) && (defined(__i386__) || (defined(__x86_64) && defined(__ILP32__))))
   register FXptr ret=(void*)v;
   __asm__ __volatile__ ("lock\n\t"
                         "xaddl %0, (%1)\n\t" : "=r"(ret) : "r"(ptr), "0"(ret) : "memory", "cc");
@@ -455,7 +455,7 @@
   return (FXptr)_InterlockedCompareExchange64((LONGLONG*)ptr,(LONGLONG)v,(LONGLONG)expect);
 #elif defined(WIN32) && (MSC_VER >=1500)
   return (FXptr)_InterlockedCompareExchange((LONG*)ptr,(LONG)v,(LONG)expect);
-#elif (defined(HAVE_INLINE_ASSEMBLY) && defined(__i386__))
+#elif (defined(HAVE_INLINE_ASSEMBLY) && (defined(__i386__) || (defined(__x86_64) && defined(__ILP32__))))
   register FXptr ret;
   __asm__ __volatile__("lock\n\t"
                        "cmpxchgl %2, (%1)\n\t" : "=a"(ret) : "r"(ptr), "r"(v), "a"(expect) : "memory", "cc");
@@ -483,7 +483,7 @@
   return (_InterlockedCompareExchange64((LONGLONG*)ptr,(LONGLONG)v,(LONGLONG)expect)==(LONGLONG)expect);
 #elif defined(WIN32) && (MSC_VER >=1500)
   return (_InterlockedCompareExchange((LONG*)ptr,(LONG)v,(LONG)expect)==(LONG)expect);
-#elif (defined(HAVE_INLINE_ASSEMBLY) && defined(__i386__))
+#elif (defined(HAVE_INLINE_ASSEMBLY) && (defined(__i386__) || (defined(__x86_64) && defined(__ILP32__))))
   register FXbool ret;
   __asm__ __volatile__ ("lock\n\t"
                         "cmpxchgl %2, (%1)\n\t"