diff --git a/Makefile.defs b/Makefile.defs
index fc4aa19a..11218de5 100644
--- a/Makefile.defs
+++ b/Makefile.defs
@@ -82,6 +82,8 @@ CPPFLAGS +=  -DDEBUG_PLAYOUTBUF
 endif
 
 TARGET =
+LIB_LDFLAGS = -shared
+
 ifeq ($(OS), linux)
 	LDFLAGS +=  -ldl -rdynamic -lpthread
 else
@@ -93,6 +95,19 @@ ifeq ($(OS), openbsd)
 else
 ifeq ($(OS), netbsd)
 	LDFLAGS += -rdynamic -pthread
+else
+ifeq ($(OS), darwin)
+	LDFLAGS += -rdynamic -pthread
+	LIB_LDFLAGS = -flat_namespace -undefined suppress -bundle
+	CXXFLAGS += -fno-common
+	CFLAGS += -fno-common
+
+	# add the DarwinPorts directory
+	CPPFLAGS += -I /opt/local/include
+	LDFLAGS += -L/opt/local/lib
+
+	# those modules do not compile by now
+	exclude_modules += binrpcctrl ilbc
 else
 	LDFLAGS+= -fPIC -ldl -lsocket -lnsl -lpthread
 	TARGET=solaris
@@ -100,8 +115,9 @@ endif
 endif
 endif
 endif
+endif
 
-LIB_LDFLAGS = $(LDFLAGS) -shared
+LIB_LDFLAGS += $(LDFLAGS)
 
 # install path is $(basedir) $(prefix) 
 # example:
diff --git a/apps/Makefile b/apps/Makefile
index 198d2e0c..d567a2d6 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -3,7 +3,7 @@ COREPATH ?= ../core
 
 include $(COREPATH)/../Makefile.defs
 
-exclude_modules ?= mp3 examples
+exclude_modules = mp3 examples py_sems
 modules ?= $(filter-out $(exclude_modules) \
 		$(wildcard Makefile*) CVS, \
 		$(wildcard *) ) examples/tutorial/cc_acc
diff --git a/core/plug-in/Makefile.audio_module b/core/plug-in/Makefile.audio_module
index 09f46ff2..018968e6 100644
--- a/core/plug-in/Makefile.audio_module
+++ b/core/plug-in/Makefile.audio_module
@@ -1,7 +1,7 @@
 COREPATH ?=../..
 include $(COREPATH)/../Makefile.defs
 
-LDFLAGS  += -shared $(module_ldflags)
+LDFLAGS  += $(module_ldflags)
 CPPFLAGS += -I $(COREPATH) -I $(COREPATH)/amci 
 CFLAGS   += -Wall $(module_cflags)
 
@@ -47,7 +47,7 @@ $(lib_full_name): $(lib_name)
 	cp $(lib_name) $(lib_full_name)
 
 $(lib_name): $(objs)  Makefile
-	$(LD) -o $(lib_name) $(objs) $(LDFLAGS)
+	$(LD) -o $(lib_name) $(objs) $(LIB_LDFLAGS)
 
 ifeq ($(lib_full_name),$(MAKECMDGOALS))
 include $(depends)
diff --git a/core/plug-in/sipctrl/udp_trsp.cpp b/core/plug-in/sipctrl/udp_trsp.cpp
index 29986680..a043188b 100644
--- a/core/plug-in/sipctrl/udp_trsp.cpp
+++ b/core/plug-in/sipctrl/udp_trsp.cpp
@@ -25,11 +25,10 @@
 # error "can't determine socket option (IP_RECVDSTADDR or IP_PKTINFO)"
 #endif
 
-union control_data {
-    struct cmsghdr  cmsg;
-    u_char          data[DSTADDR_DATASIZE];
-
-};
+// union control_data {
+//     struct cmsghdr  cmsg;
+//     u_char          data[DSTADDR_DATASIZE];
+// };
 
 
 udp_trsp::udp_trsp(trans_layer* tl)
@@ -65,7 +64,7 @@ void udp_trsp::run()
     int buf_len;
 
     msghdr           msg;
-    control_data     cmsg;
+    //control_data     cmsg;
     cmsghdr*         cmsgptr; 
     sockaddr_storage from_addr;
     iovec            iov[1];
@@ -78,8 +77,8 @@ void udp_trsp::run()
     msg.msg_namelen    = sizeof(sockaddr_storage);
     msg.msg_iov        = iov;
     msg.msg_iovlen     = 1;
-    msg.msg_control    = &cmsg;
-    msg.msg_controllen = sizeof(cmsg);
+    msg.msg_control    = new u_char[DSTADDR_DATASIZE];
+    msg.msg_controllen = DSTADDR_DATASIZE;
 
     if(sd<=0){
 	ERROR("Transport instance not bound\n");
diff --git a/core/plug-in/speex/Makefile b/core/plug-in/speex/Makefile
index 0a311f32..2b76b4fe 100644
--- a/core/plug-in/speex/Makefile
+++ b/core/plug-in/speex/Makefile
@@ -1,18 +1,19 @@
 plug_in_name = speex
 
-SPEEX_INC=/usr/include/
-SPEEX_LIB=-lspeex
+SPEEX_INC=
+#/usr/include/
+SPEEX_LIB = -lspeex
 
 # or: 
-# SPEEXDIR?=speex_src
-# SPEEX_INC?=$(SPEEXDIR)
-# SPEEX_LIB?=$(SPEEXDIR)/libspeex/.libs/libspeex.a
+# SPEEXDIR  ?= speex_src
+# SPEEX_INC ?= -I $(SPEEXDIR)
+# SPEEX_LIB ?= $(SPEEXDIR)/libspeex/.libs/libspeex.a
 #
 # CONFIGURE_FLAG=--with-pic
 
 
 module_ldflags = $(SPEEX_LIB)
-module_cflags  = -I $(SPEEX_INC) -ansi # -DNOFPU
+module_cflags  = -ansi # -DNOFPU
 
 ifdef NOFPU
 	module_cflags += -DNOFPU
diff --git a/core/plug-in/wav/wav_hdr.c b/core/plug-in/wav/wav_hdr.c
index c34789a2..0fadc5ab 100644
--- a/core/plug-in/wav/wav_hdr.c
+++ b/core/plug-in/wav/wav_hdr.c
@@ -32,7 +32,7 @@
 #include <string.h>
 #include <sys/types.h>
 
-#if (defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN))
+#if (defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN)) || (defined(BYTE_ORDER) && (BYTE_ORDER == BIG_ENDIAN))
 #define bswap_16(A)  ((((u_int16_t)(A) & 0xff00) >> 8) | \
                    (((u_int16_t)(A) & 0x00ff) << 8))
 #define bswap_32(A)  ((((u_int32_t)(A) & 0xff000000) >> 24) | \
@@ -43,7 +43,7 @@
 #define le_to_cpu16(x) bswap_16(x)
 #define cpu_to_le32(x) bswap_32(x)
 #define le_to_cpu32(x) bswap_32(x)
-#elif (defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN)) || defined(_LITTLE_ENDIAN) || defined(__LITTLE_ENDIAN)
+#elif (defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN)) || defined(_LITTLE_ENDIAN) || defined(__LITTLE_ENDIAN) || (defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN))
 #define cpu_to_le16(x) (x)
 #define cpu_to_le32(x) (x)
 #define le_to_cpu16(x) (x)