add initial symbols to config and checks to check_config to allow use of macros to define standard functions
diff --git a/include/polarssl/config.h b/include/polarssl/config.h
index 7db377e..6f13440 100644
--- a/include/polarssl/config.h
+++ b/include/polarssl/config.h
@@ -148,6 +148,16 @@
//#define POLARSSL_PLATFORM_NO_STD_FUNCTIONS
/**
+ * \def POLARSSL_PLATFORM_ENABLE_FUNCTION_MACROS
+ *
+ * TO-DO: ADD DESCRIPTION & ANY WARNINGS ETC
+ *
+ * Requires: POLARSSL_PLATFORM_C
+ *
+ */
+//#define POLARSSL_PLATFORM_ENABLE_FUNCTION_MACROS
+
+/**
* \def POLARSSL_PLATFORM_XXX_ALT
*
* Uncomment a macro to let mbed TLS support the function in the platform
@@ -2248,6 +2258,13 @@
//#define POLARSSL_PLATFORM_STD_PRINTF printf /**< Default printf to use, can be undefined */
//#define POLARSSL_PLATFORM_STD_SNPRINTF snprintf /**< Default snprintf to use, can be undefined */
+//#define POLARSSL_PLATFORM_MALLOC_MACRO malloc /**< Default allocator macro to use, can be undefined */
+//#define POLARSSL_PLATFORM_FREE_MACRO free /**< Default free macro to use, can be undefined */
+//#define POLARSSL_PLATFORM_EXIT_MACRO exit /**< Default exit macro to use, can be undefined */
+//#define POLARSSL_PLATFORM_FPRINTF_MACRO fprintf /**< Default fprintf macro to use, can be undefined */
+//#define POLARSSL_PLATFORM_PRINTF_MACRO printf /**< Default printf macro to use, can be undefined */
+//#define POLARSSL_PLATFORM_SNPRINTF_MACRO snprintf /**< Default snprintf macro to use, can be undefined */
+
/* SSL Cache options */
//#define SSL_CACHE_DEFAULT_TIMEOUT 86400 /**< 1 day */
//#define SSL_CACHE_DEFAULT_MAX_ENTRIES 50 /**< Maximum entries in cache */