convert between msgpack and json

Author: ygj6

example/c/CMakeLists.txt

@@ -1,10 +1,15 @@
+FIND_PACKAGE (cJSON)
+
 LIST (APPEND exec_PROGRAMS
     lib_buffer_unpack.c
     simple_c.c
     speed_test_uint32_array.c
     speed_test_uint64_array.c
     user_buffer_unpack.c
 )
+IF (cJSON_FOUND)
+    LIST (APPEND exec_PROGRAMS jsonconv.c)
+ENDIF ()
 
 FOREACH (source_file ${exec_PROGRAMS})
     GET_FILENAME_COMPONENT (source_file_we ${source_file} NAME_WE)
@@ -31,3 +36,8 @@ FOREACH (source_file ${exec_PROGRAMS})
         ENDIF ()
     ENDIF ()
 ENDFOREACH ()
+
+IF (cJSON_FOUND)
+    TARGET_LINK_LIBRARIES (jsonconv ${CJSON_LIBRARIES})
+    TARGET_INCLUDE_DIRECTORIES(jsonconv PRIVATE ${CJSON_INCLUDE_DIRS})
+ENDIF ()