4 files changed, 15 insertions, 13 deletions
diff --git a/src/cipher.h b/src/cipher.h
index c77142e..1e3471b 100644
--- a/src/cipher.h
+++ b/src/cipher.h
@@ -105,13 +105,13 @@ private:
   Buffer key_;
   Buffer salt_;
 
-  union __attribute__((__packed__)) cipher_aesctr_ctr_union {
+  union ATTR_PACKED cipher_aesctr_ctr_union {
     u_int8_t buf_[CTR_LENGTH];
-    struct __attribute__ ((__packed__)) {
+    struct ATTR_PACKED {
       u_int8_t buf_[SALT_LENGTH];
       u_int16_t zero_;
     } salt_;
-    struct __attribute__((__packed__)) {
+    struct ATTR_PACKED {
       u_int8_t fill_[SALT_LENGTH - sizeof(mux_t) - sizeof(sender_id_t) - 2 - sizeof(seq_nr_t)];
       mux_t mux_;
       sender_id_t sender_id_;
diff --git a/src/datatypes.h b/src/datatypes.h
index fef1cbf..8a7daff 100644
--- a/src/datatypes.h
+++ b/src/datatypes.h
@@ -52,4 +52,10 @@ typedef u_int16_t sender_id_t;
 typedef u_int16_t payload_type_t;
 typedef u_int16_t mux_t;
 
+#ifndef NOPACKED
+#define ATTR_PACKED __attribute__((__packed__))
+#else
+#define ATTR_PACKED
+#endif	  
+
 #endif
diff --git a/src/encryptedPacket.h b/src/encryptedPacket.h
index a4356dd..4a9b21b 100644
--- a/src/encryptedPacket.h
+++ b/src/encryptedPacket.h
@@ -130,16 +130,12 @@ private:
 
   void reinit();
 
-  struct HeaderStruct
+  struct ATTR_PACKED HeaderStruct
   {
     seq_nr_t seq_nr;
     sender_id_t sender_id;
     mux_t mux;
-  }
-#ifndef NOPACKED
-  __attribute__((__packed__))
-#endif	  
-;
+  };
 
   struct HeaderStruct* header_;
 	u_int8_t * payload_;
diff --git a/src/keyDerivation.h b/src/keyDerivation.h
index 2798d3b..f977922 100644
--- a/src/keyDerivation.h
+++ b/src/keyDerivation.h
@@ -169,21 +169,21 @@ private:
 
   key_store_t key_store_[2][KD_LABEL_COUNT];
 
-  union __attribute__((__packed__)) key_derivation_aesctr_ctr_union {
+  union ATTR_PACKED key_derivation_aesctr_ctr_union {
     u_int8_t buf_[CTR_LENGTH];
-    struct __attribute__ ((__packed__)) {
+    struct ATTR_PACKED {
       u_int8_t buf_[SALT_LENGTH];
       u_int16_t zero_;
     } salt_;
 #ifndef ANYTUN_02_COMPAT
-    struct __attribute__((__packed__)) {
+    struct ATTR_PACKED {
       u_int8_t fill_[SALT_LENGTH - sizeof(u_int8_t) - sizeof(seq_nr_t)];
       u_int8_t label_;
       seq_nr_t r_;
       u_int16_t zero_;
     } params_;
 #else
-    struct __attribute__((__packed__)) {
+    struct ATTR_PACKED {
       u_int8_t fill_[SALT_LENGTH - sizeof(u_int8_t) - 2 - sizeof(seq_nr_t)];
       u_int8_t label_;
       u_int8_t r_fill_[2];