diff --git a/src/ir_decoder/CMakeLists.txt b/src/ir_decoder/CMakeLists.txt
index 7ddbaf9..2e7e5b4 100644
--- a/src/ir_decoder/CMakeLists.txt
+++ b/src/ir_decoder/CMakeLists.txt
@@ -2,37 +2,16 @@ cmake_minimum_required(VERSION 3.2)
 
 ########################################################
 project(irda_decoder)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 add_definitions(-DBOARD_PC)
 set(SOURCE_FILES_EXECUTABLE
-        src/ir_decode.c
-        include/ir_decode.h
-        src/ir_tv_control.c
-        include/ir_tv_control.h
-        src/ir_ac_apply.c
-        include/ir_ac_apply.h
         include/ir_defs.h
-        src/ir_ac_build_frame.c
-        include/ir_ac_build_frame.h
-        src/ir_ac_parse_parameter.c
-        include/ir_ac_parse_parameter.h
-        src/ir_ac_parse_forbidden_info.c
-        include/ir_ac_parse_forbidden_info.h
-        src/ir_ac_parse_frame_info.c
-        include/ir_ac_parse_frame_info.h
         src/ir_utils.c
         include/ir_utils.h
-        src/ir_test_main.c
-        src/ir_ac_control.c include/ir_ac_control.h include/ir_ac_binary_parse.h src/ir_ac_binary_parse.c)
-
-set(SOURCE_FILES_SHARED_LIB
-        src/ir_decode.c
-        include/ir_decode.h
         src/ir_tv_control.c
         include/ir_tv_control.h
         src/ir_ac_apply.c
         include/ir_ac_apply.h
-        include/ir_defs.h
         src/ir_ac_build_frame.c
         include/ir_ac_build_frame.h
         src/ir_ac_parse_parameter.c
@@ -41,8 +20,36 @@ set(SOURCE_FILES_SHARED_LIB
         include/ir_ac_parse_forbidden_info.h
         src/ir_ac_parse_frame_info.c
         include/ir_ac_parse_frame_info.h
-        src/ir_utils.c
-        include/ir_utils.h)
+        src/ir_ac_control.c
+        include/ir_ac_control.h
+        src/ir_ac_binary_parse.c
+        include/ir_ac_binary_parse.h
+        src/ir_decode.c
+        include/ir_decode.h
+        src/ir_test_main.c)
 
-add_executable(irda_decoder ${SOURCE_FILES_EXECUTABLE})
-# add_library(irda_decoder SHARED ${SOURCE_FILES_SHARED_LIB})
+set(SOURCE_FILES_SHARED_LIB
+        include/ir_defs.h
+        src/ir_utils.c
+        include/ir_utils.h
+        src/ir_tv_control.c
+        include/ir_tv_control.h
+        src/ir_ac_apply.c
+        include/ir_ac_apply.h
+        src/ir_ac_build_frame.c
+        include/ir_ac_build_frame.h
+        src/ir_ac_parse_parameter.c
+        include/ir_ac_parse_parameter.h
+        src/ir_ac_parse_forbidden_info.c
+        include/ir_ac_parse_forbidden_info.h
+        src/ir_ac_parse_frame_info.c
+        include/ir_ac_parse_frame_info.h
+        src/ir_ac_control.c
+        include/ir_ac_control.h
+        src/ir_ac_binary_parse.c
+        include/ir_ac_binary_parse.h
+        src/ir_decode.c
+        include/ir_decode.h)
+
+# add_executable(irda_decoder ${SOURCE_FILES_EXECUTABLE})
+add_library(irda_decoder SHARED ${SOURCE_FILES_SHARED_LIB})
diff --git a/src/ir_decoder/src/ir_utils.c b/src/ir_decoder/src/ir_utils.c
index 63bab1b..89dc140 100644
--- a/src/ir_decoder/src/ir_utils.c
+++ b/src/ir_decoder/src/ir_utils.c
@@ -44,6 +44,7 @@ void string_to_hex(UINT8 *p, ac_hex *pac_hex, UINT16 len)
 {
     UINT8 i = 0;
 
+    IR_PRINTF("string to hex");
     pac_hex->len = chars_to_hex(p);
     p = p + 2;
     for (i = 0; i < pac_hex->len; i++)