diff --git a/src/error.h b/src/error.h
deleted file mode 100644
index f5461aab7..000000000
--- a/src/error.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ERROR_H
-#define ERROR_H 
-
-#include "mappings.h"
-
-void fatal (int);
-
-#define ERR_IO (-1)
-#define ERR_BUFFER_SIZE (-2)
-#define ERR_SEVERAL_FILES (-3)
-#define ERR_NO_FILES (-4)
-#define ERR_NON_CHAR (-5)
-#define ERR_UNCLOSED (-6)
-#define ERR_INT_LITERAL (-7)
-#define ERR_STRING (-8)
-#define ERR_PARSER (-9)
-
-#endif /* ERROR_H */
\ No newline at end of file
diff --git a/src/globals.h b/src/globals.h
index c70b1beb5..8fb6b4090 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -16,15 +16,12 @@
 #ifndef JERRY_GLOBALS_H
 #define JERRY_GLOBALS_H
 
-#include <stddef.h>
-#include <stdbool.h>
-
 /**
  * Types
  */
 typedef unsigned long mword_t;
 typedef mword_t uintptr_t;
-//typedef mword_t size_t;
+typedef mword_t size_t;
 typedef signed long ssize_t;
 typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
@@ -32,6 +29,10 @@ typedef unsigned int uint32_t;
 typedef unsigned long long uint64_t;
 typedef signed int int32_t;
 
+typedef enum {
+    false, true
+} bool;
+
 /**
  * Attributes
  */
@@ -42,9 +43,24 @@ typedef signed int int32_t;
 /**
  * Constants
  */
+#define NULL  ((void*)0)
 
 #define JERRY_BITSINBYTE 8
 
+/**
+ * Errors
+ */
+#define ERR_IO (-1)
+#define ERR_BUFFER_SIZE (-2)
+#define ERR_SEVERAL_FILES (-3)
+#define ERR_NO_FILES (-4)
+#define ERR_NON_CHAR (-5)
+#define ERR_UNCLOSED (-6)
+#define ERR_INT_LITERAL (-7)
+#define ERR_STRING (-8)
+#define ERR_PARSER (-9)
+#define ERR_GENERAL (-255)
+
 /**
  * Asserts
  *
diff --git a/src/libcoreint/interpreter.h b/src/libcoreint/interpreter.h
index 1278f4ae3..e942d8bc6 100644
--- a/src/libcoreint/interpreter.h
+++ b/src/libcoreint/interpreter.h
@@ -16,12 +16,6 @@
 #ifndef INTERPRETER_H
 #define	INTERPRETER_H
 
-#ifdef JERRY_NDEBUG
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#endif
-
 #include "opcodes.h"
 #include "ecma-globals.h"
 
diff --git a/src/libcoreint/opcodes.c b/src/libcoreint/opcodes.c
index cbfe6212e..0d60317d8 100644
--- a/src/libcoreint/opcodes.c
+++ b/src/libcoreint/opcodes.c
@@ -14,8 +14,8 @@
  */
 
 #include "ecma-operations.h"
-#include "error.h"
 #include "interpreter.h"
+#include "jerry-libc.h"
 #include "opcodes.h"
 
 void
@@ -90,7 +90,7 @@ void
 opfunc_loop_inf (OPCODE opdata, struct __int_data *int_data)
 {
 #ifdef __HOST
-  printf ("%d::loop_inf:idx:%d\n",
+  __printf ("%d::loop_inf:idx:%d\n",
           int_data->pos,
           opdata.data.loop_inf.loop_root);
 #endif
@@ -102,7 +102,7 @@ void
 opfunc_call_1 (OPCODE opdata, struct __int_data *int_data)
 {
 #ifdef __HOST
-  printf ("%d::op_call_1:idx:%d:%d\n",
+  __printf ("%d::op_call_1:idx:%d:%d\n",
           int_data->pos,
           opdata.data.call_1.name_lit_idx,
           opdata.data.call_1.arg1_lit_idx);
@@ -115,7 +115,7 @@ void
 opfunc_jmp (OPCODE opdata, struct __int_data *int_data)
 {
 #ifdef __HOST
-  printf ("%d::op_jmp:idx:%d\n",
+  __printf ("%d::op_jmp:idx:%d\n",
           int_data->pos,
           opdata.data.jmp.opcode_idx);
 #endif
diff --git a/src/libcoreint/opcodes.h b/src/libcoreint/opcodes.h
index cf0c3216e..4af8a7e41 100644
--- a/src/libcoreint/opcodes.h
+++ b/src/libcoreint/opcodes.h
@@ -16,10 +16,6 @@
 #ifndef OPCODES_H
 #define	OPCODES_H
 
-#ifdef JERRY_NDEBUG
-#include <stdio.h>
-#endif
-
 #include "globals.h"
 
 #define OPCODE struct __opcode
diff --git a/src/libjsparser/lexer.c b/src/libjsparser/lexer.c
index 69d1e8e32..47578c945 100644
--- a/src/libjsparser/lexer.c
+++ b/src/libjsparser/lexer.c
@@ -13,13 +13,15 @@
  * limitations under the License.
  */
 
-#include "error.h"
+#include "jerry-libc.h"
 #include "lexer.h"
-#include "mappings.h"
 
 static token saved_token;
 static token empty_token = { .type = TOK_EMPTY, .data.none = NULL };
 
+/* FIXME: Make general fatal function call it from libjsparser's fatal */
+extern void fatal(int);
+
 typedef struct
 {
   const char *str;
@@ -117,7 +119,7 @@ get_char (size_t i)
       if (error == 0)
         return '\0';
       if (error < BUFFER_SIZE)
-        memset (buffer + error, '\0', BUFFER_SIZE - error);
+        __memset (buffer + error, '\0', BUFFER_SIZE - error);
       buffer_start = buffer;
     }
 
@@ -141,7 +143,7 @@ get_char (size_t i)
           if (error == 0)
             return '\0';
           if (error < BUFFER_SIZE - tail_size - token_size)
-            memset (buffer + tail_size + error, '\0',
+            __memset (buffer + tail_size + error, '\0',
                     BUFFER_SIZE - tail_size - token_size - error);
         }
       else
@@ -152,7 +154,7 @@ get_char (size_t i)
           if (error == 0)
             return '\0';
           if (error < BUFFER_SIZE - tail_size)
-            memset (buffer + tail_size + error, '\0', BUFFER_SIZE - tail_size - error);
+            __memset (buffer + tail_size + error, '\0', BUFFER_SIZE - tail_size - error);
         }
     }
 
@@ -182,7 +184,7 @@ decode_keyword (void)
 
   for (i = 0; i < size; i++)
     {
-      if (!strncmp (keyword_tokens[i].str, token_start, strlen (keyword_tokens[i].str)))
+      if (!__strncmp (keyword_tokens[i].str, token_start, __strlen (keyword_tokens[i].str)))
         return keyword_tokens[i].tok;
     }
 
@@ -196,7 +198,7 @@ convert_seen_name_to_token (void)
 
   for (i = 0; i < seen_names_num; i++)
     {
-      if (!strncmp (seen_names[i].str, token_start, strlen (seen_names[i].str)))
+      if (!__strncmp (seen_names[i].str, token_start, __strlen (seen_names[i].str)))
         return seen_names[i].tok;
     }
 
@@ -233,7 +235,7 @@ current_token (void)
   JERRY_ASSERT (token_start <= buffer);
   size_t length = (size_t) (buffer - token_start);
   char *res = (char *) malloc (length + 1);
-  strncpy (res, token_start, length);
+  __strncpy (res, token_start, length);
   res[length] = '\0';
   token_start = NULL;
   return res;
@@ -278,11 +280,11 @@ static token
 parse_name (void)
 {
   char c = LA (0);
-  bool every_char_islower = islower (c);
+  bool every_char_islower = __islower (c);
   const char *string = NULL;
   token known_token = empty_token;
 
-  JERRY_ASSERT (isalpha (c) || c == '$' || c == '_');
+  JERRY_ASSERT (__isalpha (c) || c == '$' || c == '_');
 
   new_token ();
   consume_char ();
@@ -291,9 +293,9 @@ parse_name (void)
       c = LA (0);
       if (c == '\0')
         c = c;
-      if (!isalpha (c) && !isdigit (c) && c != '$' && c != '_')
+      if (!__isalpha (c) && !__isdigit (c) && c != '$' && c != '_')
         break;
-      if (every_char_islower && (!islower (c)))
+      if (every_char_islower && (!__islower (c)))
         every_char_islower = false;
       consume_char ();
     }
@@ -366,7 +368,7 @@ parse_number (void)
   size_t tok_length = 0, i;
   int res = 0;
 
-  JERRY_ASSERT (isdigit (c) || c == '.');
+  JERRY_ASSERT (__isdigit (c) || c == '.');
 
   if (c == '0')
     if (LA (1) == 'x' || LA (1) == 'X')
@@ -374,7 +376,7 @@ parse_number (void)
 
   if (c == '.')
     {
-      JERRY_ASSERT (!isalpha (LA (1)));
+      JERRY_ASSERT (!__isalpha (LA (1)));
       is_fp = true;
     }
 
@@ -387,12 +389,12 @@ parse_number (void)
       while (true)
         {
           c = LA (0);
-          if (!isxdigit (c))
+          if (!__isxdigit (c))
             break;
           consume_char ();
         }
 
-      if (isalpha (c) || c == '_' || c == '$')
+      if (__isalpha (c) || c == '_' || c == '$')
         fatal (ERR_INT_LITERAL);
 
       tok_length = (size_t) (buffer - token_start);
@@ -422,7 +424,7 @@ parse_number (void)
 
       if (c == '.')
         {
-          if (isalpha (LA (1)) || LA (1) == '_' || LA (1) == '$')
+          if (__isalpha (LA (1)) || LA (1) == '_' || LA (1) == '$')
             fatal (ERR_INT_LITERAL);
           is_fp = true;
           consume_char ();
@@ -433,17 +435,17 @@ parse_number (void)
         {
           if (LA (1) == '-' || LA (1) == '+')
             consume_char ();
-          if (!isdigit (LA (1)))
+          if (!__isdigit (LA (1)))
             fatal (ERR_INT_LITERAL);
           is_exp = true;
           consume_char ();
           continue;
         }
 
-      if (isalpha (c) || c == '_' || c == '$')
+      if (__isalpha (c) || c == '_' || c == '$')
         fatal (ERR_INT_LITERAL);
 
-      if (!isdigit (c))
+      if (!__isdigit (c))
         break;
 
       consume_char ();
@@ -451,7 +453,7 @@ parse_number (void)
 
   if (is_fp || is_exp)
     {
-      float res = strtof (token_start, NULL);
+      float res = __strtof (token_start, NULL);
       token_start = NULL;
       return (token) { .type = TOK_FLOAT, .data.fp_num = res };
     }
@@ -512,7 +514,7 @@ parse_string (void)
       if (c == '\\')
         {
           /* Only single escape character is allowed.  */
-          if (LA (1) == 'x' || LA (1) == 'u' || isdigit (LA (1)))
+          if (LA (1) == 'x' || LA (1) == 'u' || __isdigit (LA (1)))
             fatal (ERR_STRING);
           if ((LA (1) == '\'' && !is_double_quoted)
               || (LA (1) == '"' && is_double_quoted)
@@ -553,7 +555,7 @@ parse_string (void)
       index++;
     }
 
-  memset (index, '\0', length - (size_t) (index - tok));
+  __memset (index, '\0', length - (index - tok));
 
   token_start = NULL;
   // Eat up '"'
@@ -571,7 +573,7 @@ grobble_whitespaces (void)
 {
   char c = LA (0);
 
-  while ((isspace (c) && c != '\n') || c == '\0')
+  while ((__isspace (c) && c != '\n') || c == '\0')
     {
       consume_char ();
       c = LA (0);
@@ -653,10 +655,10 @@ lexer_next_token (void)
 
   JERRY_ASSERT (token_start == NULL);
 
-  if (isalpha (c) || c == '$' || c == '_')
+  if (__isalpha (c) || c == '$' || c == '_')
     return parse_name ();
 
-  if (isdigit (c) || (c == '.' && isdigit (LA (1))))
+  if (__isdigit (c) || (c == '.' && __isdigit (LA (1))))
     return parse_number ();
 
   if (c == '\n')
@@ -671,7 +673,7 @@ lexer_next_token (void)
   if (c == '\'' || c == '"')
     return parse_string ();
 
-  if (isspace (c))
+  if (__isspace (c))
     {
       grobble_whitespaces ();
       return 
@@ -803,5 +805,5 @@ lexer_save_token (token tok)
 void
 lexer_dump_buffer_state (void)
 {
-  printf ("%s\n", buffer);
+  __printf ("%s\n", buffer);
 }
\ No newline at end of file
diff --git a/src/libjsparser/lexer.h b/src/libjsparser/lexer.h
index 2c30ad288..ee3893e0d 100644
--- a/src/libjsparser/lexer.h
+++ b/src/libjsparser/lexer.h
@@ -16,7 +16,7 @@
 #ifndef LEXER_H
 #define LEXER_H
 
-#include "mappings.h"
+#include "globals.h"
 
 /* Keywords.  */
 typedef enum
diff --git a/src/libjsparser/mappings.h b/src/libjsparser/mappings.h
deleted file mode 100644
index ffcbc76f1..000000000
--- a/src/libjsparser/mappings.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MAPPINGS_H
-#define MAPPINGS_H
-
-#ifndef __HOST
-#include "jerry-libc.h"
-#include "allocator.h"
-#include <stdarg.h>
-
-static inline void *
-memset (void *s, int n1, size_t n2)
-{
-  return __memset (s, n1, n2);
-}
-
-static inline int 
-memcmp (const void *s1, const void *s2, size_t n)
-{
-  return __memcmp (s1, s2, n);
-}
-
-static inline void *
-memcpy (void *s1, const void *s2, size_t n)
-{
-  return __memcpy (s1, s2, n);
-}
-
-static inline int 
-printf (const char *s, ...)
-{  
-  va_list args;
-  va_start (args, s);
-  int ret = __printf (s, args);
-  va_end (args);
-  return ret;
-}
-
-static inline int 
-putchar (int c)
-{
-  return __putchar (c);
-}
-
-static inline void 
-exit (int status)
-{
-  __exit (status);
-}
-
-static inline int 
-strcmp (const char *s1, const char *s2)
-{
-  return __strcmp (s1, s2);
-}
-
-static inline int 
-strncmp (const char *s1, const char *s2, size_t n)
-{
-  return __strncmp (s1, s2, n);
-}
-
-static inline char *
-strncpy (char *s1, const char *s2, size_t n)
-{
-  return __strncpy (s1, s2, n);
-}
-
-static inline float 
-strtof (const char *s1, char **s2)
-{
-  return __strtof (s1, s2);
-}
-
-static inline size_t 
-strlen (const char *s)
-{
-  return __strlen (s);
-}
-
-static inline int 
-isspace (int s)
-{
-  return __isspace (s);
-}
-
-static inline int 
-isupper (int s)
-{
-  return __isupper (s);
-}
-
-static inline int 
-islower (int s)
-{
-  return __islower (s);
-}
-
-static inline int 
-isalpha (int s)
-{
-  return __isalpha (s);
-}
-
-static inline int 
-isdigit (int s)
-{
-  return __isdigit (s);
-}
-
-static inline int 
-isxdigit (int s)
-{
-  return __isxdigit (s);
-}
-
-#else
-#undef NULL
-#include "../globals.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <ctype.h>
-#endif
-
-#endif // MAPPINGS_H
diff --git a/src/libjsparser/parser.c b/src/libjsparser/parser.c
index 62f6a6693..10a359726 100644
--- a/src/libjsparser/parser.c
+++ b/src/libjsparser/parser.c
@@ -13,20 +13,20 @@
  * limitations under the License.
  */
 
-#include "parser.h"
-#include "error.h"
+#include "jerry-libc.h"
 #include "lexer.h"
-#include "error.h"
-
-extern void lexer_dump_buffer_state (void);
+#include "parser.h"
 
+/* FIXME: */
+extern void lexer_dump_buffer_state();
+/* FIXME: Make general fatal function call it from libjsparser's fatal */
 void
 fatal (int code)
 {
-  printf ("FATAL: %d\n", code);
+  __printf ("FATAL: %d\n", code);
   lexer_dump_buffer_state ();
   JERRY_UNREACHABLE ();
-  exit (code);
+  __exit( -code);
 }
 
 bool
diff --git a/src/libjsparser/parser.h b/src/libjsparser/parser.h
index d08d7c0c7..df45c22e2 100644
--- a/src/libjsparser/parser.h
+++ b/src/libjsparser/parser.h
@@ -16,7 +16,7 @@
 #ifndef PARSER_H
 #define PARSER_H
 
-#include "mappings.h"
+#include "globals.h"
 
 struct source_element_list;
 struct statement_list;
diff --git a/src/libperipherals/actuators.c b/src/libperipherals/actuators.c
index 1c3472b9b..1fa50043a 100644
--- a/src/libperipherals/actuators.c
+++ b/src/libperipherals/actuators.c
@@ -13,21 +13,20 @@
  * limitations under the License.
  */
 
-#include <stdio.h>
-
 #include "actuators.h"
+#include "jerry-libc.h"
 
 void led_toggle(int led_id)
 {
-  printf("led_toogle: %d", led_id);
+  __printf("led_toogle: %d", led_id);
 }
 
 void led_on(int led_id)
 {
-  printf("led_on: %d", led_id);
+  __printf("led_on: %d", led_id);
 }
 
 void led_off(int led_id)
 {
-  printf("led_off: %d", led_id);
+  __printf("led_off: %d", led_id);
 }
diff --git a/src/libruntime/jerry-libc.c b/src/libruntime/jerry-libc.c
index 94922f0b8..99f9bab1e 100644
--- a/src/libruntime/jerry-libc.c
+++ b/src/libruntime/jerry-libc.c
@@ -14,16 +14,11 @@
  */
 
 /**
- * Jerry libc implementation
+ * Jerry libc's common functions implementation
  */
 
 #include "jerry-libc.h"
 
-#include <stdarg.h>
-
-extern int vprintf (__const char *__restrict __format, __builtin_va_list __arg);
-extern void __noreturn exit(int status);
-
 /**
  * memset
  * 
@@ -89,40 +84,6 @@ __memcpy(void *s1, /**< destination */
   return s1;
 } /* __memcpy */
 
-/**
- * printf
- * 
- * @return number of characters printed
- */
-int
-__printf(const char *format, /**< format string */
-            ...)                /**< parameters' values */
-{
-    va_list args;
-    
-    va_start( args, format);
-    
-    int ret = vprintf( format, args);
-            
-    va_end( args);
-    
-    return ret;
-} /* __printf */
-
-/** Output of character. Writes the character c, cast to an unsigned char, to stdout.  */
-int
-__putchar (int c)
-{
-  return __printf ("%c", c);
-}
-
-/** exit - cause normal process termination  */
-void __noreturn
-__exit (int status)
-{
-  exit( status);
-}
-
 /** Compare two strings. return an integer less than, equal to, or greater than zero 
     if s1 is found, respectively, to be less than, to match, or be greater than s2.  */
 int
diff --git a/src/libruntime/jerry-libc.h b/src/libruntime/jerry-libc.h
index 9834e24ef..3d85a1cc3 100644
--- a/src/libruntime/jerry-libc.h
+++ b/src/libruntime/jerry-libc.h
@@ -21,6 +21,8 @@
 
 #include "globals.h"
 
+typedef void FILE;
+
 extern void *__memset (void *s, int c, size_t n);
 extern int __memcmp (const void *s1, const void *s2, size_t n);
 extern void *__memcpy (void *s1, const void *s2, size_t n);
@@ -41,6 +43,11 @@ extern int __isalpha (int);
 extern int __isdigit (int);
 extern int __isxdigit (int);
 
+extern FILE* __fopen(const char *path, const char *mode);
+extern int __fclose(FILE *fp);
+extern size_t __fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
+extern size_t __fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
+
 #define DBL_MANT_DIG    (  52)
 #define DBL_DIG         (  10)
 #define DBL_MIN_EXP     (-324)
diff --git a/src/libruntime/linux/jerry-assert.c b/src/libruntime/linux/jerry-assert.c
index c947f3b21..6d0d84458 100644
--- a/src/libruntime/linux/jerry-assert.c
+++ b/src/libruntime/linux/jerry-assert.c
@@ -27,5 +27,5 @@ jerry_AssertFail( const char *assertion, /**< assertion condition string */
   __printf("Assertion '%s' failed at %s:%u\n",
            assertion, file, line);
 
-  __exit( 1);
+  __exit( -ERR_GENERAL);
 } /* jerry_AssertFail */
diff --git a/src/libruntime/pretty-printer.c b/src/libruntime/pretty-printer.c
index 6ad6d151a..5a8ab75b2 100644
--- a/src/libruntime/pretty-printer.c
+++ b/src/libruntime/pretty-printer.c
@@ -13,8 +13,8 @@
  * limitations under the License.
  */
 
+#include "jerry-libc.h"
 #include "pretty-printer.h"
-#include "error.h"
 
 static int intendation;
 static bool was_function_expression;
@@ -35,11 +35,11 @@ pp_token (token tok)
   switch (tok.type)
     {
        case TOK_NAME:
-         printf ("IDENTIFIER (%s)\n", tok.data.name);
+         __printf ("IDENTIFIER (%s)\n", tok.data.name);
          break;
 
        case TOK_STRING:
-         printf ("STRING (%s)\n", tok.data.str);
+         __printf ("STRING (%s)\n", tok.data.str);
          break;
 
        case TOK_KEYWORD:
@@ -47,227 +47,227 @@ pp_token (token tok)
          break;
 
        case TOK_INT:
-         printf ("INTEGER (%d)\n", tok.data.num);
+         __printf ("INTEGER (%d)\n", tok.data.num);
          break;
 
        case TOK_FLOAT:
-         printf ("FLOAT (%f)\n", tok.data.fp_num);
+         __printf ("FLOAT (%f)\n", tok.data.fp_num);
          break;
 
        case TOK_NULL:
-         printf ("NULL (null)\n");
+         __printf ("NULL (null)\n");
          break;
 
        case TOK_BOOL:
          if (tok.data.is_true)
-           printf ("BOOL (true)\n");
+           __printf ("BOOL (true)\n");
          else
-           printf ("BOOL (false)\n");
+           __printf ("BOOL (false)\n");
          break;
 
 
        case TOK_OPEN_BRACE:
-         printf ("PUNC ({)\n");
+         __printf ("PUNC ({)\n");
          break;
 
        case TOK_CLOSE_BRACE:
-         printf ("PUNC (})\n");
+         __printf ("PUNC (})\n");
          break;
 
        case TOK_OPEN_PAREN:
-         printf ("PUNC (()\n");
+         __printf ("PUNC (()\n");
          break;
 
        case TOK_CLOSE_PAREN:
-         printf ("PUNC ())\n");
+         __printf ("PUNC ())\n");
          break;
 
        case TOK_OPEN_SQUARE:
-         printf ("PUNC ([)\n");
+         __printf ("PUNC ([)\n");
          break;
 
        case TOK_CLOSE_SQUARE:
-         printf ("PUNC (])\n");
+         __printf ("PUNC (])\n");
          break;
 
 
        case TOK_DOT:
-         printf ("PUNC (.)\n");
+         __printf ("PUNC (.)\n");
          break;
 
        case TOK_SEMICOLON:
-         printf ("PUNC (;)\n");
+         __printf ("PUNC (;)\n");
          break;
 
        case TOK_COMMA:
-         printf ("PUNC (,)\n");
+         __printf ("PUNC (,)\n");
          break;
 
        case TOK_LESS:
-         printf ("PUNC (<)\n");
+         __printf ("PUNC (<)\n");
          break;
 
        case TOK_GREATER:
-         printf ("PUNC (>)\n");
+         __printf ("PUNC (>)\n");
          break;
 
        case TOK_LESS_EQ:
-         printf ("PUNC (<=)\n");
+         __printf ("PUNC (<=)\n");
          break;
 
 
        case TOK_GREATER_EQ:
-         printf ("PUNC (>=)\n");
+         __printf ("PUNC (>=)\n");
          break;
 
        case TOK_DOUBLE_EQ:
-         printf ("PUNC (==)\n");
+         __printf ("PUNC (==)\n");
          break;
 
        case TOK_NOT_EQ:
-         printf ("PUNC (!=)\n");
+         __printf ("PUNC (!=)\n");
          break;
 
        case TOK_TRIPLE_EQ:
-         printf ("PUNC (===)\n");
+         __printf ("PUNC (===)\n");
          break;
 
        case TOK_NOT_DOUBLE_EQ:
-         printf ("PUNC (!==)\n");
+         __printf ("PUNC (!==)\n");
          break;
 
 
        case TOK_PLUS:
-         printf ("PUNC (+)\n");
+         __printf ("PUNC (+)\n");
          break;
 
        case TOK_MINUS:
-         printf ("PUNC (-)\n");
+         __printf ("PUNC (-)\n");
          break;
 
        case TOK_MULT:
-         printf ("PUNC (*)\n");
+         __printf ("PUNC (*)\n");
          break;
 
        case TOK_MOD:
-         printf ("PUNC (%%)\n");
+         __printf ("PUNC (%%)\n");
          break;
 
        case TOK_DOUBLE_PLUS:
-         printf ("PUNC (++)\n");
+         __printf ("PUNC (++)\n");
          break;
 
        case TOK_DOUBLE_MINUS:
-         printf ("PUNC (--)\n");
+         __printf ("PUNC (--)\n");
          break;
 
 
        case TOK_LSHIFT:
-         printf ("PUNC (<<)\n");
+         __printf ("PUNC (<<)\n");
          break;
 
        case TOK_RSHIFT:
-         printf ("PUNC (>>)\n");
+         __printf ("PUNC (>>)\n");
          break;
 
        case TOK_RSHIFT_EX:
-         printf ("PUNC (>>>)\n");
+         __printf ("PUNC (>>>)\n");
          break;
 
        case TOK_AND:
-         printf ("PUNC (&)\n");
+         __printf ("PUNC (&)\n");
          break;
 
        case TOK_OR:
-         printf ("PUNC (|)\n");
+         __printf ("PUNC (|)\n");
          break;
 
        case TOK_XOR:
-         printf ("PUNC (^)\n");
+         __printf ("PUNC (^)\n");
          break;
 
 
        case TOK_NOT:
-         printf ("PUNC (!)\n");
+         __printf ("PUNC (!)\n");
          break;
 
        case TOK_COMPL:
-         printf ("PUNC (~)\n");
+         __printf ("PUNC (~)\n");
          break;
 
        case TOK_DOUBLE_AND:
-         printf ("PUNC (&&)\n");
+         __printf ("PUNC (&&)\n");
          break;
 
        case TOK_DOUBLE_OR:
-         printf ("PUNC (||)\n");
+         __printf ("PUNC (||)\n");
          break;
 
        case TOK_QUERY:
-         printf ("PUNC (?)\n");
+         __printf ("PUNC (?)\n");
          break;
 
        case TOK_COLON:
-         printf ("PUNC (:)\n");
+         __printf ("PUNC (:)\n");
          break;
 
 
        case TOK_EQ:
-         printf ("PUNC (=)\n");
+         __printf ("PUNC (=)\n");
          break;
 
        case TOK_PLUS_EQ:
-         printf ("PUNC (+=)\n");
+         __printf ("PUNC (+=)\n");
          break;
 
        case TOK_MINUS_EQ:
-         printf ("PUNC (-=)\n");
+         __printf ("PUNC (-=)\n");
          break;
 
        case TOK_MULT_EQ:
-         printf ("PUNC (*=)\n");
+         __printf ("PUNC (*=)\n");
          break;
 
        case TOK_MOD_EQ:
-         printf ("PUNC (%%=)\n");
+         __printf ("PUNC (%%=)\n");
          break;
 
        case TOK_LSHIFT_EQ:
-         printf ("PUNC (<<=)\n");
+         __printf ("PUNC (<<=)\n");
          break;
 
 
        case TOK_RSHIFT_EQ:
-         printf ("PUNC (>>=)\n");
+         __printf ("PUNC (>>=)\n");
          break;
 
        case TOK_RSHIFT_EX_EQ:
-         printf ("PUNC (>>>=)\n");
+         __printf ("PUNC (>>>=)\n");
          break;
 
        case TOK_AND_EQ:
-         printf ("PUNC (&=)\n");
+         __printf ("PUNC (&=)\n");
          break;
 
        case TOK_OR_EQ:
-         printf ("PUNC (|=)\n");
+         __printf ("PUNC (|=)\n");
          break;
 
        case TOK_XOR_EQ:
-         printf ("PUNC (^=)\n");
+         __printf ("PUNC (^=)\n");
          break;
 
 
        case TOK_DIV:
-         printf ("PUNC (/)\n");
+         __printf ("PUNC (/)\n");
          break;
 
        case TOK_DIV_EQ:
-         printf ("PUNC (/=)\n");
+         __printf ("PUNC (/=)\n");
          break;
 
        case TOK_NEWLINE:
-         printf ("NEWLINE\n");
+         __printf ("NEWLINE\n");
          break;
 
        default:
@@ -286,115 +286,115 @@ pp_keyword (keyword kw)
       break;
 
     case KW_RESERVED:
-      printf ("KEYWORD RESERVED\n");
+      __printf ("KEYWORD RESERVED\n");
       break;
 
 
     case KW_BREAK:
-      printf ("KEYWORD (break)\n");
+      __printf ("KEYWORD (break)\n");
       break;
 
     case KW_CASE:
-      printf ("KEYWORD (case)\n");
+      __printf ("KEYWORD (case)\n");
       break;
 
     case KW_CATCH:
-      printf ("KEYWORD (catch)\n");
+      __printf ("KEYWORD (catch)\n");
       break;
 
     case KW_CONTINUE:
-      printf ("KEYWORD (continue)\n");
+      __printf ("KEYWORD (continue)\n");
       break;
 
     case KW_DEBUGGER:
-      printf ("KEYWORD (debugger)\n");
+      __printf ("KEYWORD (debugger)\n");
       break;
 
     case KW_DEFAULT:
-      printf ("KEYWORD (default)\n");
+      __printf ("KEYWORD (default)\n");
       break;
 
     case KW_DELETE:
-      printf ("KEYWORD (delete)\n");
+      __printf ("KEYWORD (delete)\n");
       break;
 
 
     case KW_DO:
-      printf ("KEYWORD (do)\n");
+      __printf ("KEYWORD (do)\n");
       break;
 
     case KW_ELSE:
-      printf ("KEYWORD (else)\n");
+      __printf ("KEYWORD (else)\n");
       break;
 
     case KW_FINALLY:
-      printf ("KEYWORD (finally)\n");
+      __printf ("KEYWORD (finally)\n");
       break;
 
     case KW_FOR:
-      printf ("KEYWORD (for)\n");
+      __printf ("KEYWORD (for)\n");
       break;
 
     case KW_FUNCTION:
-      printf ("KEYWORD (function)\n");
+      __printf ("KEYWORD (function)\n");
       break;
 
     case KW_IF:
-      printf ("KEYWORD (if)\n");
+      __printf ("KEYWORD (if)\n");
       break;
 
     case KW_IN:
-      printf ("KEYWORD (in)\n");
+      __printf ("KEYWORD (in)\n");
       break;
 
 
     case KW_INSTANCEOF:
-      printf ("KEYWORD (instanceof)\n");
+      __printf ("KEYWORD (instanceof)\n");
       break;
 
     case KW_NEW:
-      printf ("KEYWORD (new)\n");
+      __printf ("KEYWORD (new)\n");
       break;
 
     case KW_RETURN:
-      printf ("KEYWORD (return)\n");
+      __printf ("KEYWORD (return)\n");
       break;
 
     case KW_SWITCH:
-      printf ("KEYWORD (switch)\n");
+      __printf ("KEYWORD (switch)\n");
       break;
 
     case KW_THIS:
-      printf ("KEYWORD (this)\n");
+      __printf ("KEYWORD (this)\n");
       break;
 
     case KW_THROW:
-      printf ("KEYWORD (throw)\n");
+      __printf ("KEYWORD (throw)\n");
       break;
 
     case KW_TRY:
-      printf ("KEYWORD (try)\n");
+      __printf ("KEYWORD (try)\n");
       break;
 
 
     case KW_TYPEOF:
-      printf ("KEYWORD (typeof)\n");
+      __printf ("KEYWORD (typeof)\n");
       break;
 
     case KW_VAR:
-      printf ("KEYWORD (var)\n");
+      __printf ("KEYWORD (var)\n");
       break;
 
     case KW_VOID:
-      printf ("KEYWORD (void)\n");
+      __printf ("KEYWORD (void)\n");
       break;
 
     case KW_WHILE:
-      printf ("KEYWORD (while)\n");
+      __printf ("KEYWORD (while)\n");
       break;
 
     case KW_WITH:
-      printf ("KEYWORD (with)\n");
+      __printf ("KEYWORD (with)\n");
       break;
 
     default:
@@ -404,10 +404,10 @@ pp_keyword (keyword kw)
 }
 
 static void
-intend (void)
+intend ()
 {
   for (int i = 0; i < intendation; i++)
-    putchar (' '); 
+    __putchar (' '); 
 }
 
 static void
@@ -420,20 +420,20 @@ pp_formal_parameter_list (formal_parameter_list param_list)
       if (param_list.names[i] == NULL)
         break;
       if (i != 0)
-        printf (", ");
-      printf ("%s", param_list.names[i]);
+        __printf (", ");
+      __printf ("%s", param_list.names[i]);
     }
 }
 
 static void
 pp_function_declaration (function_declaration func_decl)
 {
-  printf ("function ");
+  __printf ("function ");
   if (func_decl.name)
-    printf ("%s ", func_decl.name);
-  putchar ('(');
+    __printf ("%s ", func_decl.name);
+  __putchar ('(');
   pp_formal_parameter_list (func_decl.params);
-  printf (") ");
+  __printf (") ");
   was_function_expression = true;
 }
 
@@ -443,19 +443,19 @@ pp_literal (literal lit)
   switch (lit.type)
   {
     case LIT_NULL:
-      printf ("null");
+      __printf ("null");
       break;
 
     case LIT_BOOL:
-      printf ("%s", lit.data.is_true ? "true" : "false");
+      __printf ("%s", lit.data.is_true ? "true" : "false");
       break;
 
     case LIT_INT:
-      printf ("%d", lit.data.num);
+      __printf ("%d", lit.data.num);
       break;
 
     case LIT_STR:
-      printf ("\"%s\"", lit.data.str);
+      __printf ("\"%s\"", lit.data.str);
       break;
 
     default:
@@ -470,7 +470,7 @@ pp_operand (operand op)
   if (op.is_literal)
     pp_literal (op.data.lit);
   else
-    printf ("%s", op.data.name);
+    __printf ("%s", op.data.name);
 }
 
 static void
@@ -483,7 +483,7 @@ pp_operand_list (operand_list list)
       if (is_operand_empty (list.ops[i]))
         break;
       if (i != 0)
-        printf (", ");
+        __printf (", ");
       pp_operand (list.ops[i]);
     }
 }
@@ -493,7 +493,7 @@ pp_property (property prop)
 {
   JERRY_ASSERT (!is_property_empty (prop));
   pp_operand (prop.name);
-  printf (" : ");
+  __printf (" : ");
   pp_operand (prop.value);
 }
 
@@ -507,7 +507,7 @@ pp_property_list (property_list prop_list)
       if (is_property_empty (prop_list.props[i]))
         break;
       if (i != 0)
-        printf (", ");
+        __printf (", ");
       pp_property (prop_list.props[i]);
     }
 }
@@ -516,40 +516,40 @@ static void
 pp_call_expression (call_expression expr)
 {
   JERRY_ASSERT (expr.name);
-  printf ("%s (", expr.name);
+  __printf ("%s (", expr.name);
   pp_operand_list (expr.args);
-  printf (")\n");
+  __printf (")\n");
 }
 
 static void
 dump_two_operands (operand_pair pair, const char *operation)
 {
   pp_operand (pair.op1);
-  printf ("%s", operation);
+  __printf ("%s", operation);
   pp_operand (pair.op2);
-  putchar ('\n');
+  __putchar ('\n');
 }
 
 static void
 dump_unary (operand op, const char *operation)
 {
-  printf ("%s", operation);
+  __printf ("%s", operation);
   pp_operand (op);
-  putchar ('\n');
+  __putchar ('\n');
 }
 
 static void
 dump_postfix (operand op, const char *operation)
 {
   pp_operand (op);
-  printf ("%s\n", operation);
+  __printf ("%s\n", operation);
 }
 
 static void
 pp_assignment_expression (assignment_expression expr)
 {
-  if (expr.oper != AO_NONE && expr.var)
-    printf ("%s", expr.var);
+  if (expr.var)
+    __printf ("%s", expr.var);
 
   switch (expr.oper)
   {
@@ -557,51 +557,51 @@ pp_assignment_expression (assignment_expression expr)
       break;
 
     case AO_EQ:
-      printf (" = ");
+      __printf (" = ");
       break;
 
     case AO_MULT_EQ:
-      printf (" *= ");
+      __printf (" *= ");
       break;
 
     case AO_DIV_EQ:
-      printf (" ?= ");
+      __printf (" ?= ");
       break;
 
     case AO_MOD_EQ:
-      printf (" %%= ");
+      __printf (" %%= ");
       break;
 
     case AO_PLUS_EQ:
-      printf (" += ");
+      __printf (" += ");
       break;
 
     case AO_MINUS_EQ:
-      printf (" -= ");
+      __printf (" -= ");
       break;
 
     case AO_LSHIFT_EQ:
-      printf (" <<= ");
+      __printf (" <<= ");
       break;
 
     case AO_RSHIFT_EQ:
-      printf (" >>= ");
+      __printf (" >>= ");
       break;
 
     case AO_RSHIFT_EX_EQ:
-      printf (" >>>= ");
+      __printf (" >>>= ");
       break;
 
     case AO_AND_EQ:
-      printf (" &= ");
+      __printf (" &= ");
       break;
 
     case AO_XOR_EQ:
-      printf (" ^= ");
+      __printf (" ^= ");
       break;
 
     case AO_OR_EQ:
-      printf (" |= ");
+      __printf (" |= ");
       break;
 
     default:
@@ -767,30 +767,30 @@ pp_assignment_expression (assignment_expression expr)
       return;
 
     case ET_NEW:
-      printf ("new ");
+      __printf ("new ");
       pp_operand (expr.data.ops.op1);
       JERRY_ASSERT (is_operand_empty (expr.data.ops.op2));
-      putchar ('\n');
+      __putchar ('\n');
       return;
 
     case ET_INDEX:
       pp_operand (expr.data.ops.op1);
-      putchar ('.');
+      __putchar ('.');
       pp_operand (expr.data.ops.op2);
-      putchar ('\n');
+      __putchar ('\n');
       return;
 
     case ET_PROP_REF:
       pp_operand (expr.data.ops.op1);
-      putchar ('[');
+      __putchar ('[');
       pp_operand (expr.data.ops.op2);
-      printf ("]\n");
+      __printf ("]\n");
       return;
 
     case ET_OBJECT:
-      putchar ('{');
+      __putchar ('{');
       pp_property_list (expr.data.obj_lit);
-      printf ("}\n");
+      __printf ("}\n");
       return;
 
     case ET_FUNCTION:
@@ -798,20 +798,20 @@ pp_assignment_expression (assignment_expression expr)
       return;
 
     case ET_ARRAY:
-      putchar ('[');
+      __putchar ('[');
       pp_operand_list (expr.data.arr_lit);
-      printf ("]\n");
+      __printf ("]\n");
       return;
 
     case ET_SUBEXPRESSION:
-      putchar ('(');
+      __putchar ('(');
       return;
 
     case ET_LITERAL:
     case ET_IDENTIFIER:  
       pp_operand (expr.data.ops.op1);
       JERRY_ASSERT (is_operand_empty (expr.data.ops.op2));
-      putchar ('\n');
+      __putchar ('\n');
       return;
 
     default:
@@ -829,13 +829,13 @@ pp_expression (expression_list expr_list)
       if (is_expression_empty (expr_list.exprs[i]))
         break;
       if (i != 0)
-        printf (", ");
+        __printf (", ");
       pp_assignment_expression (expr_list.exprs[i]);
     }
 
   if (was_subexpression && !was_function_expression)
     {
-      putchar (')');
+      __putchar (')');
       was_subexpression = false;
     }
 }
@@ -843,10 +843,10 @@ pp_expression (expression_list expr_list)
 static void
 pp_variable_declaration (variable_declaration var_decl)
 {
-  printf ("%s", var_decl.name);
+  __printf ("%s", var_decl.name);
   if (!is_expression_empty (var_decl.assign_expr))
     {
-      printf (" = ");
+      __printf (" = ");
       pp_assignment_expression (var_decl.assign_expr);
     }
 }
@@ -856,14 +856,14 @@ pp_variable_declaration_list (variable_declaration_list decl_list)
 {
   int i;
 
-  printf ("var ");
+  __printf ("var ");
 
   for (i = 0; i < MAX_DECLS; i++)
     {
       if (is_variable_declaration_empty (decl_list.decls[i]))
         break;
       if (i != 0)
-        printf (", ");
+        __printf (", ");
       pp_variable_declaration (decl_list.decls[i]);
     }
 }
@@ -873,7 +873,7 @@ pp_for_in_statement_initializer_part (for_in_statement_initializer_part init)
 {
   if (init.is_decl)
     {
-      printf ("var ");
+      __printf ("var ");
       pp_variable_declaration (init.data.decl);
     }
   else if (!is_expression_empty (init.data.left_hand_expr))
@@ -883,11 +883,11 @@ pp_for_in_statement_initializer_part (for_in_statement_initializer_part init)
 static void
 pp_for_in_statement (for_in_statement for_in_stmt)
 {
-  printf ("for (");
+  __printf ("for (");
   pp_for_in_statement_initializer_part (for_in_stmt.init);
-  printf (" in ");
+  __printf (" in ");
   pp_expression (for_in_stmt.list_expr);
-  printf (") ");
+  __printf (") ");
 }
 
 static void
@@ -902,15 +902,15 @@ pp_for_statement_initialiser_part (for_statement_initialiser_part init)
 static void
 pp_for_statement (for_statement for_stmt)
 {
-  printf ("for (");
+  __printf ("for (");
   pp_for_statement_initialiser_part (for_stmt.init);
-  printf ("; ");
+  __printf ("; ");
   if (is_expression_empty (for_stmt.limit))
     pp_assignment_expression (for_stmt.limit);
-  printf ("; ");
+  __printf ("; ");
   if (is_expression_empty (for_stmt.incr))
     pp_assignment_expression (for_stmt.incr);
-  printf (") ");
+  __printf (") ");
 }
 
 static void
@@ -932,25 +932,25 @@ pp_statement (statement stmt)
     {
       if (stmt.type == STMT_EMPTY)
         {
-          printf (";\n");
+          __printf (";\n");
           prev_stmt = stmt.type;
           return;
         }
       else
-        putchar ('\n');
+        __putchar ('\n');
     }
 
   switch (stmt.type)
   {
     case STMT_BLOCK_START:
-      printf ("{\n");
+      __printf ("{\n");
       intendation += 2;
       break;
 
     case STMT_BLOCK_END:
       intendation -= 2;
       intend ();
-      printf ("}");
+      __printf ("}");
       break;
 
     case STMT_VARIABLE:
@@ -959,38 +959,38 @@ pp_statement (statement stmt)
       break;
 
     case STMT_EMPTY:
-      printf (";\n");
+      __printf (";\n");
       break;
 
     case STMT_IF:
       intend ();
-      printf ("if (");
+      __printf ("if (");
       pp_expression (stmt.data.expr);
-      printf (") ");
+      __printf (") ");
       break;
 
     case STMT_ELSE:
       intend ();
-      printf ("else ");
+      __printf ("else ");
       break;
 
     case STMT_ELSE_IF:
       intend ();
-      printf ("else if(");
+      __printf ("else if(");
       pp_expression (stmt.data.expr);
-      printf (") ");
+      __printf (") ");
       break;
 
     case STMT_DO:
       intend ();
-      printf ("do ");
+      __printf ("do ");
       break;
 
     case STMT_WHILE:
       intend ();
-      printf ("while (");
+      __printf ("while (");
       pp_expression (stmt.data.expr);
-      printf (") ");
+      __printf (") ");
       break;
 
     case STMT_FOR_OR_FOR_IN:
@@ -1000,70 +1000,70 @@ pp_statement (statement stmt)
 
     case STMT_CONTINUE:
       intend ();
-      printf ("continue\n");
+      __printf ("continue\n");
       break;
 
     case STMT_BREAK:
       intend ();
-      printf ("break\n");
+      __printf ("break\n");
       break;
 
     case STMT_RETURN:
       intend ();
-      printf ("return ");
+      __printf ("return ");
       pp_expression (stmt.data.expr);
       if (!was_function_expression)
-        printf (";\n");
+        __printf (";\n");
       break;
 
     case STMT_WITH:
       intend ();
-      printf ("with (");
+      __printf ("with (");
       pp_expression (stmt.data.expr);
-      printf (") ");
+      __printf (") ");
       break;
 
     case STMT_LABELLED:
       intend ();
-      printf ("%s:\n", stmt.data.name);
+      __printf ("%s:\n", stmt.data.name);
       break;
 
     case STMT_SWITCH:
       intend ();
-      printf ("switch (");
+      __printf ("switch (");
       pp_expression (stmt.data.expr);
-      printf (") ");
+      __printf (") ");
       break;
 
     case STMT_CASE:
       intend ();
-      printf ("case ");
+      __printf ("case ");
       pp_expression (stmt.data.expr);
-      printf (":\n");
+      __printf (":\n");
       break;
 
     case STMT_THROW:
       intend ();
-      printf ("throw ");
+      __printf ("throw ");
       pp_expression (stmt.data.expr);
-      printf (";\n");
+      __printf (";\n");
       break;
 
     case STMT_TRY:
       intend ();
-      printf ("try ");
+      __printf ("try ");
       break;
 
     case STMT_CATCH:
       intend ();
-      printf ("catch (");
+      __printf ("catch (");
       pp_expression (stmt.data.expr);
-      printf (") ");
+      __printf (") ");
       break;
 
     case STMT_FINALLY:
       intend ();
-      printf ("finally ");
+      __printf ("finally ");
       break;
 
     case STMT_EXPRESSION:
@@ -1072,7 +1072,7 @@ pp_statement (statement stmt)
       break;
 
     case STMT_SUBEXPRESSION_END:
-      putchar (')');
+      __putchar (')');
       break;
 
     case STMT_FUNCTION:
@@ -1087,8 +1087,8 @@ pp_statement (statement stmt)
   prev_stmt = stmt.type;
 }
 
-void pp_finish (void)
+void pp_finish ()
 {
   if (prev_stmt == STMT_BLOCK_END)
-    putchar ('\n');
+    __putchar ('\n');
 }
diff --git a/src/libruntime/stm32f4/jerry-assert.c b/src/libruntime/stm32f4/jerry-assert.c
index 949d80110..b6b3b5952 100644
--- a/src/libruntime/stm32f4/jerry-assert.c
+++ b/src/libruntime/stm32f4/jerry-assert.c
@@ -24,9 +24,5 @@ jerry_AssertFail( const char *assertion, /**< assertion condition string */
 		  const char *file, /**< file name */
                   const uint32_t line) /** line */
 {
-    /**
-     * TODO: Blink with LEDs.
-     *       Save call stack?
-     */
-    while( true );
+  __exit( -ERR_GENERAL);
 } /* jerry_AssertFail */
diff --git a/src/main.c b/src/main.c
index 0aa43228c..a2a89f7d0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -13,12 +13,6 @@
  * limitations under the License.
  */
 
-#ifdef __HOST
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#endif
-
 #ifdef __TARGET_MCU
 #include "stm32f4xx.h"
 #include "stm32f4xx_gpio.h"
@@ -30,17 +24,11 @@
 #define LED_BLUE       15
 #endif
 
-#include "error.h"
-
-#include "mem-allocator.h"
-
-#include "interpreter.h"
-
 #include "generated.h"
-
-#include "lexer.h"
-#include "parser.h"
-#include "pretty-printer.h"
+#include "globals.h"
+#include "interpreter.h"
+#include "jerry-libc.h"
+#include "mem-allocator.h"
 
 void fake_exit (void);
 
@@ -111,9 +99,9 @@ main (int argc, char **argv)
   if (argc > 0)
     for (int i = 1; i < argc; i++)
     {
-      if (!strcmp ("-t", argv[i]))
+      if (!__strcmp ("-t", argv[i]))
         dump_tokens = true;
-      else if (!strcmp ("-a", argv[i]))
+      else if (!__strcmp ("-a", argv[i]))
         dump_ast = true;
       else if (file_name == NULL)
         file_name = argv[i];