arm has atomic builtin unsupported

chaos/common/bson/bson/bson-atomic.h

@@ -48,7 +48,7 @@ BSON_BEGIN_DECLS
 #define __BSON_NEED_ATOMIC_32
 #endif
 #ifdef BSON_HAVE_ATOMIC_64_ADD_AND_FETCH
-#if BSON_GNUC_IS_VERSION(4, 1)
+#if BSON_GNUC_IS_VERSION(4, 1) || defined(CHAOS_TARGET)
 /*
  * GCC 4.1 on i386 can generate buggy 64-bit atomic increment.
  * So we will work around with a fallback.

chaos/common/bson/bson/bson-config.h

@@ -46,7 +46,7 @@
  * dependent. For example, some PPC or ARM systems may not have it even
  * if it is a recent GCC version.
  */
-#if !defined DISABLE_COMPARE_AND_SWAP
+#if !defined DISABLE_COMPARE_AND_SWAP && ! defined(CHAOS_TARGET)
 #define BSON_HAVE_ATOMIC_32_ADD_AND_FETCH 1
 #else
 #define BSON_HAVE_ATOMIC_32_ADD_AND_FETCH 0
@@ -59,13 +59,13 @@
 /*
  * Similarly, define to 1 if we have access to GCC 64-bit atomic builtins.
  */
-#if !defined DISABLE_COMPARE_AND_SWAP
+#if !defined DISABLE_COMPARE_AND_SWAP && ! defined(CHAOS_TARGET)
 #define BSON_HAVE_ATOMIC_64_ADD_AND_FETCH 1
 #else
 #define BSON_HAVE_ATOMIC_64_ADD_AND_FETCH 0
 #endif
 
-#if BSON_HAVE_ATOMIC_64_ADD_AND_FETCH != 1
+#if BSON_HAVE_ATOMIC_64_ADD_AND_FETCH != 1 && ! defined(CHAOS_TARGET)
 # undef BSON_HAVE_ATOMIC_64_ADD_AND_FETCH
 #endif
 

config/CMakeChaos.txt

@@ -146,6 +146,8 @@ ENDIF()
 
 IF(CHAOS_TARGET)
   SET(CHAOS_POSTFIX ${CHAOS_TARGET})
+  ADD_DEFINITIONS(-DCHAOS_TARGET)
+
 ELSE()
   SET(CHAOS_POSTFIX "${CHAOS_SYSTEM_MACHINE}-${CHAOS_SYSTEM_NAME}")
 ENDIF()