enable system's my_malloc/calloc/realloc/free via compile time option
diff --git a/config.mk b/config.mk
index da094d7..e9c73b3 100644
--- a/config.mk
+++ b/config.mk
@@ -1,3 +1,9 @@
+# Comment out the line below 'USE_SYS_DYN_MEM = yes' if you do not want to use
+# system's malloc()/calloc()/realloc()/free() for internal dynamic memory management.
+# NOTE: in that case, your program must specify your own malloc/calloc/realloc/free
+# functions with cs_option(), using CS_OPT_MEM option type.
+USE_SYS_DYN_MEM = yes
+
 # Specify which archs you want to compile in
 CAPSTONE_ARCHS =