diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,7 @@
 # Paths
 SRC_ENC   = lib_enc lib_com basic_op basic_math
 SRC_DEC   = lib_dec lib_com basic_op basic_math
+SRC_LIB   = lib_dec lib_enc lib_com basic_op basic_math
 BUILD     = build
 
 SRC_DIRS  = $(sort -u $(SRC_ENC) $(SRC_DEC)) 
@@ -10,6 +11,7 @@ SRC_DIRS  = $(sort -u $(SRC_ENC) $(SRC_DEC))
 # Name of CLI binaries
 CLI_ENC   = EVS_cod
 CLI_DEC   = EVS_dec
+LIB_SO    = lib3gpp-evs.so
 
 # Default tool settings
 CC        = gcc
@@ -49,13 +51,17 @@ CFLAGS   += $(foreach DIR,$(SRC_DIRS),-I$(DIR))
 # Source file search paths
 VPATH     = $(SRC_DIRS)
 
+CFLAGS   += -fPIC
+
 ###############################################################################
 
 SRCS_ENC  = $(foreach DIR,$(SRC_ENC),$(patsubst $(DIR)/%,%,$(wildcard $(DIR)/*.c)))
 SRCS_DEC  = $(foreach DIR,$(SRC_DEC),$(patsubst $(DIR)/%,%,$(wildcard $(DIR)/*.c)))
+SRCS_LIB  = $(filter-out encoder.c decoder.c voip_client.c,$(foreach DIR,$(SRC_LIB),$(patsubst $(DIR)/%,%,$(wildcard $(DIR)/*.c))))
 
 OBJS_ENC  = $(addprefix $(BUILD)/,$(SRCS_ENC:.c=.o))
 OBJS_DEC  = $(addprefix $(BUILD)/,$(SRCS_DEC:.c=.o))
+OBJS_LIB  = $(addprefix $(BUILD)/,$(SRCS_LIB:.c=.o))
 
 DEPS      = $(addprefix $(BUILD)/,$(SRCS_ENC:.c=.P) $(SRCS_DEC:.c=.P))
 
@@ -63,7 +69,7 @@ DEPS      = $(addprefix $(BUILD)/,$(SRCS_ENC:.c=.P) $(SRCS_DEC:.c=.P))
 
 .PHONY: all clean clean_all
 
-all: $(CLI_ENC) $(CLI_DEC)
+all: $(CLI_ENC) $(CLI_DEC) $(LIB_SO)
 
 $(BUILD):
 	$(QUIET)mkdir -p $(BUILD)
@@ -74,6 +80,9 @@ $(CLI_ENC): $(OBJS_ENC)
 $(CLI_DEC): $(OBJS_DEC)
 	$(QUIET_LINK)$(CC) $(LDFLAGS) $(OBJS_DEC) -lm -o $(CLI_DEC)
 
+$(LIB_SO): $(OBJS_LIB)
+	$(QUIET_LINK)$(CC) $(LDFLAGS) $(OBJS_LIB) -lm -shared -o $(LIB_SO)
+
 clean:
 	$(QUIET)$(RM) $(OBJS_ENC) $(OBJS_DEC) $(DEPS)
 	$(QUIET)$(RM) $(DEPS:.P=.d)
diff --git a/lib_com/prot_fx.h b/lib_com/prot_fx.h
--- a/lib_com/prot_fx.h
+++ b/lib_com/prot_fx.h
@@ -622,6 +622,11 @@ void SetModeIndex(
 void init_encoder_fx(
     Encoder_State_fx *st_fx       /* i/o: Encoder static variables structure            */
 );
+unsigned long encoder_size(void);
+unsigned long encoder_ind_list_size(void);
+void encoder_set_opts(Encoder_State_fx *st_fx, unsigned long Fs, void *ind_list);
+void encoder_set_brate(Encoder_State_fx *st, unsigned long brate, unsigned int bwidth,
+		unsigned int mode, unsigned int amr);
 
 void destroy_encoder_fx( Encoder_State_fx *st_fx );
 
@@ -654,6 +659,9 @@ Word16 gp_clip_fx(
 void init_decoder_fx(
     Decoder_State_fx *st_fx           /* o:   Decoder static variables structure */
 );
+unsigned long decoder_size(void);
+void decoder_set_Fs(Decoder_State_fx *st_fx, unsigned long Fs);
+void decoder_inc_ini_frame(Decoder_State_fx *st);
 
 void destroy_decoder(
     Decoder_State_fx *st_fx           /* o:   Decoder static variables structure */
diff --git a/lib_dec/init_dec_fx.c b/lib_dec/init_dec_fx.c
--- a/lib_dec/init_dec_fx.c
+++ b/lib_dec/init_dec_fx.c
@@ -965,3 +965,16 @@ void destroy_decoder(
 
     return;
 }
+
+
+
+unsigned long decoder_size(void) {
+	return sizeof(Decoder_State_fx);
+}
+void decoder_set_Fs(Decoder_State_fx *st_fx, unsigned long Fs) {
+	st_fx->output_Fs_fx = Fs;
+}
+void decoder_inc_ini_frame(Decoder_State_fx *st) {
+	if (st->ini_frame_fx < MAX_FRAME_COUNTER)
+		st->ini_frame_fx++;
+}
diff --git a/lib_enc/init_enc_fx.c b/lib_enc/init_enc_fx.c
--- a/lib_enc/init_enc_fx.c
+++ b/lib_enc/init_enc_fx.c
@@ -1006,3 +1006,31 @@ void destroy_encoder_fx(
 
     return;
 }
+
+
+
+unsigned long encoder_size(void) {
+	return sizeof(Encoder_State_fx);
+}
+void encoder_set_opts(Encoder_State_fx *st_fx, unsigned long Fs, void *ind_list) {
+	st_fx->input_Fs_fx = Fs;
+	st_fx->ind_list_fx = ind_list;
+	st_fx->rf_fec_indicator = 1;
+	st_fx->last_codec_mode = st_fx->codec_mode;
+}
+void encoder_set_brate(Encoder_State_fx *st, unsigned long brate, unsigned int bwidth,
+		unsigned int mode, unsigned int amr) {
+	if (brate == 5900) {
+		st->Opt_SC_VBR_fx = 1;
+		brate = 7200;
+	}
+	else
+		st->Opt_SC_VBR_fx = 0;
+	st->total_brate_fx = brate;
+	st->codec_mode = mode;
+	st->Opt_AMR_WB_fx = amr;
+	st->max_bwidth_fx = bwidth;
+}
+unsigned long encoder_ind_list_size(void) {
+	return sizeof(Indice_fx) * MAX_NUM_INDICES;
+}