diff --git a/winsup/mingw/ChangeLog b/winsup/mingw/ChangeLog
index b0f749390..0eaa00254 100644
--- a/winsup/mingw/ChangeLog
+++ b/winsup/mingw/ChangeLog
@@ -1,3 +1,14 @@
+2012-08-02  Earnie Boyd  <earnie@users.sourceforge.net>
+
+	* include/stdlib.h (_strtoi64): Declare.
+	(_strtoi64_l): Ditto.
+	(_strtoui64): Ditto.
+	(_strtoui64_l): Ditto.
+	(_wcstrtoi64): Ditto.
+	(_wcstrtoi64_l): Ditto.
+	(_wcstrtoui64): Ditto.
+	(_wcstrtoui64_l): Ditto.
+
 2012-08-01  Earnie Boyd  <earnie@users.sourceforge.net>
 
 	* include/excpt.h (__try1): Define based on _WIN64 definition.
diff --git a/winsup/mingw/include/stdlib.h b/winsup/mingw/include/stdlib.h
index 4df18aab3..726aa6fd2 100644
--- a/winsup/mingw/include/stdlib.h
+++ b/winsup/mingw/include/stdlib.h
@@ -300,6 +300,15 @@ __MINGW_IMPORT  int _fmode_dll;
 
 #endif /* Not __STRICT_ANSI__ */
 
+_CRTIMP __int64 __cdecl _strtoi64(const char*, char **, int);
+_CRTIMP __int64 __cdecl _strtoi64_l(const char *, char **, int, _locale_t);
+_CRTIMP __int64 __cdecl _wcstoi64(const wchar_t *, wchar_t **, int);
+_CRTIMP __int64 __cdecl _wcstoi64_l(const wchar_t *, wchar_t **, int, _locale_t);
+_CRTIMP unsigned __int64 __cdecl _strtoui64(const char*, char **, int);
+_CRTIMP unsigned __int64 __cdecl _strtoui64_l(const char *, char **, int, _locale_t);
+_CRTIMP unsigned __int64 __cdecl _wcstoui64(const wchar_t *, wchar_t **, int);
+_CRTIMP unsigned __int64 __cdecl _wcstoui64_l(const wchar_t *, wchar_t **, int, _locale_t);
+
 _CRTIMP double __cdecl __MINGW_NOTHROW	atof	(const char*);
 _CRTIMP int __cdecl __MINGW_NOTHROW	atoi	(const char*);
 _CRTIMP long __cdecl __MINGW_NOTHROW 	atol	(const char*);