Diff: py/mpconfig.h

Revision:

0:5868e8752d44

Child:

2:c89e95946844

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/py/mpconfig.h	Sat Apr 16 17:11:56 2016 +0000
@@ -0,0 +1,1001 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef __MICROPY_INCLUDED_PY_MPCONFIG_H__
+#define __MICROPY_INCLUDED_PY_MPCONFIG_H__
+
+// This file contains default configuration settings for MicroPython.
+// You can override any of the options below using mpconfigport.h file
+// located in a directory of your port.
+
+// mpconfigport.h is a file containing configuration settings for a
+// particular port. mpconfigport.h is actually a default name for
+// such config, and it can be overriden using MP_CONFIGFILE preprocessor
+// define (you can do that by passing CFLAGS_EXTRA='-DMP_CONFIGFILE="<file.h>"'
+// argument to make when using standard MicroPython makefiles).
+// This is useful to have more than one config per port, for example,
+// release vs debug configs, etc. Note that if you switch from one config
+// to another, you must rebuild from scratch using "-B" switch to make.
+
+#ifdef MP_CONFIGFILE
+#include MP_CONFIGFILE
+#else
+#include <mpconfigport.h>
+#endif
+
+// Any options not explicitly set in mpconfigport.h will get default
+// values below.
+
+/*****************************************************************************/
+/* Object representation                                                     */
+
+// A Micro Python object is a machine word having the following form:
+//  - xxxx...xxx1 : a small int, bits 1 and above are the value
+//  - xxxx...xx10 : a qstr, bits 2 and above are the value
+//  - xxxx...xx00 : a pointer to an mp_obj_base_t (unless a fake object)
+#define MICROPY_OBJ_REPR_A (0)
+
+// A Micro Python object is a machine word having the following form:
+//  - xxxx...xx01 : a small int, bits 2 and above are the value
+//  - xxxx...xx11 : a qstr, bits 2 and above are the value
+//  - xxxx...xxx0 : a pointer to an mp_obj_base_t (unless a fake object)
+#define MICROPY_OBJ_REPR_B (1)
+
+// A MicroPython object is a machine word having the following form (called R):
+//  - iiiiiiii iiiiiiii iiiiiiii iiiiiii1 small int with 31-bit signed value
+//  - 01111111 1qqqqqqq qqqqqqqq qqqqq110 str with 20-bit qstr value
+//  - s1111111 10000000 00000000 00000010 +/- inf
+//  - s1111111 1xxxxxxx xxxxxxxx xxxxx010 nan, x != 0
+//  - seeeeeee efffffff ffffffff ffffff10 30-bit fp, e != 0xff
+//  - pppppppp pppppppp pppppppp pppppp00 ptr (4 byte alignment)
+// Str and float stored as O = R + 0x80800000, retrieved as R = O - 0x80800000.
+// This makes strs easier to encode/decode as they have zeros in the top 9 bits.
+// This scheme only works with 32-bit word size and float enabled.
+
+#define MICROPY_OBJ_REPR_C (2)
+
+// A MicroPython object is a 64-bit word having the following form (called R):
+//  - seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff 64-bit fp, e != 0x7ff
+//  - s1111111 11110000 00000000 00000000 00000000 00000000 00000000 00000000 +/- inf
+//  - 01111111 11111000 00000000 00000000 00000000 00000000 00000000 00000000 normalised nan
+//  - 01111111 11111101 00000000 00000000 iiiiiiii iiiiiiii iiiiiiii iiiiiii1 small int
+//  - 01111111 11111110 00000000 00000000 qqqqqqqq qqqqqqqq qqqqqqqq qqqqqqq1 str
+//  - 01111111 11111100 00000000 00000000 pppppppp pppppppp pppppppp pppppp00 ptr (4 byte alignment)
+// Stored as O = R + 0x8004000000000000, retrieved as R = O - 0x8004000000000000.
+// This makes pointers have all zeros in the top 32 bits.
+// Small-ints and strs have 1 as LSB to make sure they don't look like pointers
+// to the garbage collector.
+#define MICROPY_OBJ_REPR_D (3)
+
+#ifndef MICROPY_OBJ_REPR
+#define MICROPY_OBJ_REPR (MICROPY_OBJ_REPR_A)
+#endif
+
+/*****************************************************************************/
+/* Memory allocation policy                                                  */
+
+// Number of bytes in memory allocation/GC block. Any size allocated will be
+// rounded up to be multiples of this.
+#ifndef MICROPY_BYTES_PER_GC_BLOCK
+#define MICROPY_BYTES_PER_GC_BLOCK (4 * BYTES_PER_WORD)
+#endif
+
+// Number of words allocated (in BSS) to the GC stack (minimum is 1)
+#ifndef MICROPY_ALLOC_GC_STACK_SIZE
+#define MICROPY_ALLOC_GC_STACK_SIZE (64)
+#endif
+
+// Number of bytes to allocate initially when creating new chunks to store
+// interned string data.  Smaller numbers lead to more chunks being needed
+// and more wastage at the end of the chunk.  Larger numbers lead to wasted
+// space at the end when no more strings need interning.
+#ifndef MICROPY_ALLOC_QSTR_CHUNK_INIT
+#define MICROPY_ALLOC_QSTR_CHUNK_INIT (128)
+#endif
+
+// Initial amount for lexer indentation level
+#ifndef MICROPY_ALLOC_LEXER_INDENT_INIT
+#define MICROPY_ALLOC_LEXER_INDENT_INIT (10)
+#endif
+
+// Increment for lexer indentation level
+#ifndef MICROPY_ALLOC_LEXEL_INDENT_INC
+#define MICROPY_ALLOC_LEXEL_INDENT_INC (8)
+#endif
+
+// Initial amount for parse rule stack
+#ifndef MICROPY_ALLOC_PARSE_RULE_INIT
+#define MICROPY_ALLOC_PARSE_RULE_INIT (64)
+#endif
+
+// Increment for parse rule stack
+#ifndef MICROPY_ALLOC_PARSE_RULE_INC
+#define MICROPY_ALLOC_PARSE_RULE_INC (16)
+#endif
+
+// Initial amount for parse result stack
+#ifndef MICROPY_ALLOC_PARSE_RESULT_INIT
+#define MICROPY_ALLOC_PARSE_RESULT_INIT (32)
+#endif
+
+// Increment for parse result stack
+#ifndef MICROPY_ALLOC_PARSE_RESULT_INC
+#define MICROPY_ALLOC_PARSE_RESULT_INC (16)
+#endif
+
+// Strings this length or less will be interned by the parser
+#ifndef MICROPY_ALLOC_PARSE_INTERN_STRING_LEN
+#define MICROPY_ALLOC_PARSE_INTERN_STRING_LEN (10)
+#endif
+
+// Number of bytes to allocate initially when creating new chunks to store
+// parse nodes.  Small leads to fragmentation, large leads to excess use.
+#ifndef MICROPY_ALLOC_PARSE_CHUNK_INIT
+#define MICROPY_ALLOC_PARSE_CHUNK_INIT (128)
+#endif
+
+// Initial amount for ids in a scope
+#ifndef MICROPY_ALLOC_SCOPE_ID_INIT
+#define MICROPY_ALLOC_SCOPE_ID_INIT (4)
+#endif
+
+// Increment for ids in a scope
+#ifndef MICROPY_ALLOC_SCOPE_ID_INC
+#define MICROPY_ALLOC_SCOPE_ID_INC (6)
+#endif
+
+// Maximum length of a path in the filesystem
+// So we can allocate a buffer on the stack for path manipulation in import
+#ifndef MICROPY_ALLOC_PATH_MAX
+#define MICROPY_ALLOC_PATH_MAX (512)
+#endif
+
+// Initial size of module dict
+#ifndef MICROPY_MODULE_DICT_SIZE
+#define MICROPY_MODULE_DICT_SIZE (1)
+#endif
+
+// Whether realloc/free should be passed allocated memory region size
+// You must enable this if MICROPY_MEM_STATS is enabled
+#ifndef MICROPY_MALLOC_USES_ALLOCATED_SIZE
+#define MICROPY_MALLOC_USES_ALLOCATED_SIZE (0)
+#endif
+
+// Number of bytes used to store qstr length
+// Dictates hard limit on maximum Python identifier length, but 1 byte
+// (limit of 255 bytes in an identifier) should be enough for everyone
+#ifndef MICROPY_QSTR_BYTES_IN_LEN
+#define MICROPY_QSTR_BYTES_IN_LEN (1)
+#endif
+
+// Number of bytes used to store qstr hash
+#ifndef MICROPY_QSTR_BYTES_IN_HASH
+#define MICROPY_QSTR_BYTES_IN_HASH (2)
+#endif
+
+// Avoid using C stack when making Python function calls. C stack still
+// may be used if there's no free heap.
+#ifndef MICROPY_STACKLESS
+#define MICROPY_STACKLESS (0)
+#endif
+
+// Never use C stack when making Python function calls. This may break
+// testsuite as will subtly change which exception is thrown in case
+// of too deep recursion and other similar cases.
+#ifndef MICROPY_STACKLESS_STRICT
+#define MICROPY_STACKLESS_STRICT (0)
+#endif
+
+// Don't use alloca calls. As alloca() is not part of ANSI C, this
+// workaround option is provided for compilers lacking this de-facto
+// standard function. The way it works is allocating from heap, and
+// relying on garbage collection to free it eventually. This is of
+// course much less optimal than real alloca().
+#if defined(MICROPY_NO_ALLOCA) && MICROPY_NO_ALLOCA
+#undef alloca
+#define alloca(x) m_malloc(x)
+#endif
+
+/*****************************************************************************/
+/* Micro Python emitters                                                     */
+
+// Whether to support loading of persistent code
+#ifndef MICROPY_PERSISTENT_CODE_LOAD
+#define MICROPY_PERSISTENT_CODE_LOAD (0)
+#endif
+
+// Whether to support saving of persistent code
+#ifndef MICROPY_PERSISTENT_CODE_SAVE
+#define MICROPY_PERSISTENT_CODE_SAVE (0)
+#endif
+
+// Whether generated code can persist independently of the VM/runtime instance
+// This is enabled automatically when needed by other features
+#ifndef MICROPY_PERSISTENT_CODE
+#define MICROPY_PERSISTENT_CODE (MICROPY_PERSISTENT_CODE_LOAD || MICROPY_PERSISTENT_CODE_SAVE)
+#endif
+
+// Whether to emit x64 native code
+#ifndef MICROPY_EMIT_X64
+#define MICROPY_EMIT_X64 (0)
+#endif
+
+// Whether to emit x86 native code
+#ifndef MICROPY_EMIT_X86
+#define MICROPY_EMIT_X86 (0)
+#endif
+
+// Whether to emit thumb native code
+#ifndef MICROPY_EMIT_THUMB
+#define MICROPY_EMIT_THUMB (0)
+#endif
+
+// Whether to enable the thumb inline assembler
+#ifndef MICROPY_EMIT_INLINE_THUMB
+#define MICROPY_EMIT_INLINE_THUMB (0)
+#endif
+
+// Whether to enable ARMv7-M instruction support in the Thumb2 inline assembler
+#ifndef MICROPY_EMIT_INLINE_THUMB_ARMV7M
+#define MICROPY_EMIT_INLINE_THUMB_ARMV7M (1)
+#endif
+
+// Whether to enable float support in the Thumb2 inline assembler
+#ifndef MICROPY_EMIT_INLINE_THUMB_FLOAT
+#define MICROPY_EMIT_INLINE_THUMB_FLOAT (1)
+#endif
+
+// Whether to emit ARM native code
+#ifndef MICROPY_EMIT_ARM
+#define MICROPY_EMIT_ARM (0)
+#endif
+
+// Convenience definition for whether any native emitter is enabled
+#define MICROPY_EMIT_NATIVE (MICROPY_EMIT_X64 || MICROPY_EMIT_X86 || MICROPY_EMIT_THUMB || MICROPY_EMIT_ARM)
+
+/*****************************************************************************/
+/* Compiler configuration                                                    */
+
+// Whether to include the compiler
+#ifndef MICROPY_ENABLE_COMPILER
+#define MICROPY_ENABLE_COMPILER (1)
+#endif
+
+// Whether the compiler is dynamically configurable (ie at runtime)
+#ifndef MICROPY_DYNAMIC_COMPILER
+#define MICROPY_DYNAMIC_COMPILER (0)
+#endif
+
+// Configure dynamic compiler macros
+#if MICROPY_DYNAMIC_COMPILER
+#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE_DYNAMIC (mp_dynamic_compiler.opt_cache_map_lookup_in_bytecode)
+#define MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC (mp_dynamic_compiler.py_builtins_str_unicode)
+#else
+#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE_DYNAMIC MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
+#define MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC MICROPY_PY_BUILTINS_STR_UNICODE
+#endif
+
+// Whether to enable constant folding; eg 1+2 rewritten as 3
+#ifndef MICROPY_COMP_CONST_FOLDING
+#define MICROPY_COMP_CONST_FOLDING (1)
+#endif
+
+// Whether to enable lookup of constants in modules; eg module.CONST
+#ifndef MICROPY_COMP_MODULE_CONST
+#define MICROPY_COMP_MODULE_CONST (0)
+#endif
+
+// Whether to enable constant optimisation; id = const(value)
+#ifndef MICROPY_COMP_CONST
+#define MICROPY_COMP_CONST (1)
+#endif
+
+// Whether to enable optimisation of: a, b = c, d
+// Costs 124 bytes (Thumb2)
+#ifndef MICROPY_COMP_DOUBLE_TUPLE_ASSIGN
+#define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (1)
+#endif
+
+// Whether to enable optimisation of: a, b, c = d, e, f
+// Cost 156 bytes (Thumb2)
+#ifndef MICROPY_COMP_TRIPLE_TUPLE_ASSIGN
+#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (0)
+#endif
+
+/*****************************************************************************/
+/* Internal debugging stuff                                                  */
+
+// Whether to collect memory allocation stats
+#ifndef MICROPY_MEM_STATS
+#define MICROPY_MEM_STATS (0)
+#endif
+
+// Whether to build functions that print debugging info:
+//   mp_lexer_show_token
+//   mp_bytecode_print
+//   mp_parse_node_print
+#ifndef MICROPY_DEBUG_PRINTERS
+#define MICROPY_DEBUG_PRINTERS (0)
+#endif
+
+/*****************************************************************************/
+/* Optimisations                                                             */
+
+// Whether to use computed gotos in the VM, or a switch
+// Computed gotos are roughly 10% faster, and increase VM code size by a little
+#ifndef MICROPY_OPT_COMPUTED_GOTO
+#define MICROPY_OPT_COMPUTED_GOTO (0)
+#endif
+
+// Whether to cache result of map lookups in LOAD_NAME, LOAD_GLOBAL, LOAD_ATTR,
+// STORE_ATTR bytecodes.  Uses 1 byte extra RAM for each of these opcodes and
+// uses a bit of extra code ROM, but greatly improves lookup speed.
+#ifndef MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
+#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE (0)
+#endif
+
+// Whether to use fast versions of bitwise operations (and, or, xor) when the
+// arguments are both positive.  Increases Thumb2 code size by about 250 bytes.
+#ifndef MICROPY_OPT_MPZ_BITWISE
+#define MICROPY_OPT_MPZ_BITWISE (0)
+#endif
+
+/*****************************************************************************/
+/* Python internal features                                                  */
+
+// Hook for the VM at the start of the opcode loop (can contain variable
+// definitions usable by the other hook functions)
+#ifndef MICROPY_VM_HOOK_INIT
+#define MICROPY_VM_HOOK_INIT
+#endif
+
+// Hook for the VM during the opcode loop (but only after jump opcodes)
+#ifndef MICROPY_VM_HOOK_LOOP
+#define MICROPY_VM_HOOK_LOOP
+#endif
+
+// Hook for the VM just before return opcode is finished being interpreted
+#ifndef MICROPY_VM_HOOK_RETURN
+#define MICROPY_VM_HOOK_RETURN
+#endif
+
+// Whether to include the garbage collector
+#ifndef MICROPY_ENABLE_GC
+#define MICROPY_ENABLE_GC (0)
+#endif
+
+// Whether to enable finalisers in the garbage collector (ie call __del__)
+#ifndef MICROPY_ENABLE_FINALISER
+#define MICROPY_ENABLE_FINALISER (0)
+#endif
+
+// Whether to check C stack usage. C stack used for calling Python functions,
+// etc. Not checking means segfault on overflow.
+#ifndef MICROPY_STACK_CHECK
+#define MICROPY_STACK_CHECK (0)
+#endif
+
+// Whether to have an emergency exception buffer
+#ifndef MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
+#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (0)
+#endif
+#if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
+#   ifndef MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE
+#   define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE (0)   // 0 - implies dynamic allocation
+#   endif
+#endif
+
+// Prefer to raise KeyboardInterrupt asynchronously (from signal or interrupt
+// handler) - if supported by a particular port.
+#ifndef MICROPY_ASYNC_KBD_INTR
+#define MICROPY_ASYNC_KBD_INTR (0)
+#endif
+
+// Whether to include REPL helper function
+#ifndef MICROPY_HELPER_REPL
+#define MICROPY_HELPER_REPL (0)
+#endif
+
+// Whether to include emacs-style readline behavior in REPL
+#ifndef MICROPY_REPL_EMACS_KEYS
+#define MICROPY_REPL_EMACS_KEYS (0)
+#endif
+
+// Whether to implement auto-indent in REPL
+#ifndef MICROPY_REPL_AUTO_INDENT
+#define MICROPY_REPL_AUTO_INDENT (0)
+#endif
+
+// Whether port requires event-driven REPL functions
+#ifndef MICROPY_REPL_EVENT_DRIVEN
+#define MICROPY_REPL_EVENT_DRIVEN (0)
+#endif
+
+// Whether to include lexer helper function for unix
+#ifndef MICROPY_HELPER_LEXER_UNIX
+#define MICROPY_HELPER_LEXER_UNIX (0)
+#endif
+
+// Long int implementation
+#define MICROPY_LONGINT_IMPL_NONE (0)
+#define MICROPY_LONGINT_IMPL_LONGLONG (1)
+#define MICROPY_LONGINT_IMPL_MPZ (2)
+
+#ifndef MICROPY_LONGINT_IMPL
+#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_NONE)
+#endif
+
+#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
+typedef long long mp_longint_impl_t;
+#endif
+
+// Whether to include information in the byte code to determine source
+// line number (increases RAM usage, but doesn't slow byte code execution)
+#ifndef MICROPY_ENABLE_SOURCE_LINE
+#define MICROPY_ENABLE_SOURCE_LINE (0)
+#endif
+
+// Whether to include doc strings (increases RAM usage)
+#ifndef MICROPY_ENABLE_DOC_STRING
+#define MICROPY_ENABLE_DOC_STRING (0)
+#endif
+
+// Exception messages are short static strings
+#define MICROPY_ERROR_REPORTING_TERSE    (1)
+// Exception messages provide basic error details
+#define MICROPY_ERROR_REPORTING_NORMAL   (2)
+// Exception messages provide full info, e.g. object names
+#define MICROPY_ERROR_REPORTING_DETAILED (3)
+
+#ifndef MICROPY_ERROR_REPORTING
+#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_NORMAL)
+#endif
+
+// Whether issue warnings during compiling/execution
+#ifndef MICROPY_WARNINGS
+#define MICROPY_WARNINGS (0)
+#endif
+
+// Float and complex implementation
+#define MICROPY_FLOAT_IMPL_NONE (0)
+#define MICROPY_FLOAT_IMPL_FLOAT (1)
+#define MICROPY_FLOAT_IMPL_DOUBLE (2)
+
+#ifndef MICROPY_FLOAT_IMPL
+#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_NONE)
+#endif
+
+#if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
+#define MICROPY_PY_BUILTINS_FLOAT (1)
+#define MICROPY_FLOAT_C_FUN(fun) fun##f
+typedef float mp_float_t;
+#elif MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
+#define MICROPY_PY_BUILTINS_FLOAT (1)
+#define MICROPY_FLOAT_C_FUN(fun) fun
+typedef double mp_float_t;
+#else
+#define MICROPY_PY_BUILTINS_FLOAT (0)
+#endif
+
+#ifndef MICROPY_PY_BUILTINS_COMPLEX
+#define MICROPY_PY_BUILTINS_COMPLEX (MICROPY_PY_BUILTINS_FLOAT)
+#endif
+
+// Enable features which improve CPython compatibility
+// but may lead to more code size/memory usage.
+// TODO: Originally intended as generic category to not
+// add bunch of once-off options. May need refactoring later
+#ifndef MICROPY_CPYTHON_COMPAT
+#define MICROPY_CPYTHON_COMPAT (1)
+#endif
+
+// Whether POSIX-semantics non-blocking streams are supported
+#ifndef MICROPY_STREAMS_NON_BLOCK
+#define MICROPY_STREAMS_NON_BLOCK (0)
+#endif
+
+// Whether to call __init__ when importing builtin modules for the first time
+#ifndef MICROPY_MODULE_BUILTIN_INIT
+#define MICROPY_MODULE_BUILTIN_INIT (0)
+#endif
+
+// Whether module weak links are supported
+#ifndef MICROPY_MODULE_WEAK_LINKS
+#define MICROPY_MODULE_WEAK_LINKS (0)
+#endif
+
+// Whether frozen modules are supported
+#ifndef MICROPY_MODULE_FROZEN
+#define MICROPY_MODULE_FROZEN (0)
+#endif
+
+// Whether you can override builtins in the builtins module
+#ifndef MICROPY_CAN_OVERRIDE_BUILTINS
+#define MICROPY_CAN_OVERRIDE_BUILTINS (0)
+#endif
+
+// Whether to check that the "self" argument of a builtin method has the
+// correct type.  Such an explicit check is only needed if a builtin
+// method escapes to Python land without a first argument, eg
+// list.append([], 1).  Without this check such calls will have undefined
+// behaviour (usually segfault) if the first argument is the wrong type.
+#ifndef MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG
+#define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (1)
+#endif
+
+// Support for user-space VFS mount (selected ports)
+#ifndef MICROPY_FSUSERMOUNT
+#define MICROPY_FSUSERMOUNT (0)
+#endif
+
+/*****************************************************************************/
+/* Fine control over Python builtins, classes, modules, etc                  */
+
+// Whether to implement attributes on functions
+#ifndef MICROPY_PY_FUNCTION_ATTRS
+#define MICROPY_PY_FUNCTION_ATTRS (0)
+#endif
+
+// Whether to support descriptors (__get__ and __set__)
+// This costs some code size and makes all load attrs and store attrs slow
+#ifndef MICROPY_PY_DESCRIPTORS
+#define MICROPY_PY_DESCRIPTORS (0)
+#endif
+
+// Whether str object is proper unicode
+#ifndef MICROPY_PY_BUILTINS_STR_UNICODE
+#define MICROPY_PY_BUILTINS_STR_UNICODE (0)
+#endif
+
+// Whether str.splitlines() method provided
+#ifndef MICROPY_PY_BUILTINS_STR_SPLITLINES
+#define MICROPY_PY_BUILTINS_STR_SPLITLINES (0)
+#endif
+
+// Whether to support bytearray object
+#ifndef MICROPY_PY_BUILTINS_BYTEARRAY
+#define MICROPY_PY_BUILTINS_BYTEARRAY (1)
+#endif
+
+// Whether to support memoryview object
+#ifndef MICROPY_PY_BUILTINS_MEMORYVIEW
+#define MICROPY_PY_BUILTINS_MEMORYVIEW (0)
+#endif
+
+// Whether to support set object
+#ifndef MICROPY_PY_BUILTINS_SET
+#define MICROPY_PY_BUILTINS_SET (1)
+#endif
+
+// Whether to support slice subscript operators and slice object
+#ifndef MICROPY_PY_BUILTINS_SLICE
+#define MICROPY_PY_BUILTINS_SLICE (1)
+#endif
+
+// Whether to support slice attribute read access,
+// i.e. slice.start, slice.stop, slice.step
+#ifndef MICROPY_PY_BUILTINS_SLICE_ATTRS
+#define MICROPY_PY_BUILTINS_SLICE_ATTRS (0)
+#endif
+
+// Whether to support frozenset object
+#ifndef MICROPY_PY_BUILTINS_FROZENSET
+#define MICROPY_PY_BUILTINS_FROZENSET (0)
+#endif
+
+// Whether to support property object
+#ifndef MICROPY_PY_BUILTINS_PROPERTY
+#define MICROPY_PY_BUILTINS_PROPERTY (1)
+#endif
+
+// Whether to implement the start/stop/step attributes (readback) on
+// the "range" builtin type. Rarely used, and costs ~60 bytes (x86).
+#ifndef MICROPY_PY_BUILTINS_RANGE_ATTRS
+#define MICROPY_PY_BUILTINS_RANGE_ATTRS (1)
+#endif
+
+// Whether to support timeout exceptions (like socket.timeout)
+#ifndef MICROPY_PY_BUILTINS_TIMEOUTERROR
+#define MICROPY_PY_BUILTINS_TIMEOUTERROR (0)
+#endif
+
+// Whether to support complete set of special methods
+// for user classes, otherwise only the most used
+#ifndef MICROPY_PY_ALL_SPECIAL_METHODS
+#define MICROPY_PY_ALL_SPECIAL_METHODS (0)
+#endif
+
+// Whether to support compile function
+#ifndef MICROPY_PY_BUILTINS_COMPILE
+#define MICROPY_PY_BUILTINS_COMPILE (0)
+#endif
+
+// Whether to support enumerate function(type)
+#ifndef MICROPY_PY_BUILTINS_ENUMERATE
+#define MICROPY_PY_BUILTINS_ENUMERATE (1)
+#endif
+
+// Whether to support eval and exec functions
+// By default they are supported if the compiler is enabled
+#ifndef MICROPY_PY_BUILTINS_EVAL_EXEC
+#define MICROPY_PY_BUILTINS_EVAL_EXEC (MICROPY_ENABLE_COMPILER)
+#endif
+
+// Whether to support the Python 2 execfile function
+#ifndef MICROPY_PY_BUILTINS_EXECFILE
+#define MICROPY_PY_BUILTINS_EXECFILE (0)
+#endif
+
+// Whether to support filter function(type)
+#ifndef MICROPY_PY_BUILTINS_FILTER
+#define MICROPY_PY_BUILTINS_FILTER (1)
+#endif
+
+// Whether to support reversed function(type)
+#ifndef MICROPY_PY_BUILTINS_REVERSED
+#define MICROPY_PY_BUILTINS_REVERSED (1)
+#endif
+
+// Whether to define "NotImplemented" special constant
+#ifndef MICROPY_PY_BUILTINS_NOTIMPLEMENTED
+#define MICROPY_PY_BUILTINS_NOTIMPLEMENTED (0)
+#endif
+
+// Whether to support min/max functions
+#ifndef MICROPY_PY_BUILTINS_MIN_MAX
+#define MICROPY_PY_BUILTINS_MIN_MAX (1)
+#endif
+
+// Whether to set __file__ for imported modules
+#ifndef MICROPY_PY___FILE__
+#define MICROPY_PY___FILE__ (1)
+#endif
+
+// Whether to provide mem-info related functions in micropython module
+#ifndef MICROPY_PY_MICROPYTHON_MEM_INFO
+#define MICROPY_PY_MICROPYTHON_MEM_INFO (0)
+#endif
+
+// Whether to provide "array" module. Note that large chunk of the
+// underlying code is shared with "bytearray" builtin type, so to
+// get real savings, it should be disabled too.
+#ifndef MICROPY_PY_ARRAY
+#define MICROPY_PY_ARRAY (1)
+#endif
+
+// Whether to support slice assignments for array (and bytearray).
+// This is rarely used, but adds ~0.5K of code.
+#ifndef MICROPY_PY_ARRAY_SLICE_ASSIGN
+#define MICROPY_PY_ARRAY_SLICE_ASSIGN (0)
+#endif
+
+// Whether to support attrtuple type (MicroPython extension)
+// It provides space-efficient tuples with attribute access
+#ifndef MICROPY_PY_ATTRTUPLE
+#define MICROPY_PY_ATTRTUPLE (1)
+#endif
+
+// Whether to provide "collections" module
+#ifndef MICROPY_PY_COLLECTIONS
+#define MICROPY_PY_COLLECTIONS (1)
+#endif
+
+// Whether to provide "collections.OrderedDict" type
+#ifndef MICROPY_PY_COLLECTIONS_ORDEREDDICT
+#define MICROPY_PY_COLLECTIONS_ORDEREDDICT (0)
+#endif
+
+// Whether to provide "math" module
+#ifndef MICROPY_PY_MATH
+#define MICROPY_PY_MATH (1)
+#endif
+
+// Whether to provide special math functions: math.{erf,erfc,gamma,lgamma}
+#ifndef MICROPY_PY_MATH_SPECIAL_FUNCTIONS
+#define MICROPY_PY_MATH_SPECIAL_FUNCTIONS (0)
+#endif
+
+// Whether to provide "cmath" module
+#ifndef MICROPY_PY_CMATH
+#define MICROPY_PY_CMATH (0)
+#endif
+
+// Whether to provide "gc" module
+#ifndef MICROPY_PY_GC
+#define MICROPY_PY_GC (1)
+#endif
+
+// Whether to return number of collected objects from gc.collect()
+#ifndef MICROPY_PY_GC_COLLECT_RETVAL
+#define MICROPY_PY_GC_COLLECT_RETVAL (0)
+#endif
+
+// Whether to provide "io" module
+#ifndef MICROPY_PY_IO
+#define MICROPY_PY_IO (1)
+#endif
+
+// Whether to provide "io.FileIO" class
+#ifndef MICROPY_PY_IO_FILEIO
+#define MICROPY_PY_IO_FILEIO (0)
+#endif
+
+// Whether to provide "io.BytesIO" class
+#ifndef MICROPY_PY_IO_BYTESIO
+#define MICROPY_PY_IO_BYTESIO (1)
+#endif
+
+// Whether to provide "io.BufferedWriter" class
+#ifndef MICROPY_PY_IO_BUFFEREDWRITER
+#define MICROPY_PY_IO_BUFFEREDWRITER (0)
+#endif
+
+// Whether to provide "struct" module
+#ifndef MICROPY_PY_STRUCT
+#define MICROPY_PY_STRUCT (1)
+#endif
+
+// Whether to provide "sys" module
+#ifndef MICROPY_PY_SYS
+#define MICROPY_PY_SYS (1)
+#endif
+
+// Whether to provide "sys.maxsize" constant
+#ifndef MICROPY_PY_SYS_MAXSIZE
+#define MICROPY_PY_SYS_MAXSIZE (0)
+#endif
+
+// Whether to provide "sys.modules" dictionary
+#ifndef MICROPY_PY_SYS_MODULES
+#define MICROPY_PY_SYS_MODULES (1)
+#endif
+
+// Whether to provide "sys.exc_info" function
+// Avoid enabling this, this function is Python2 heritage
+#ifndef MICROPY_PY_SYS_EXC_INFO
+#define MICROPY_PY_SYS_EXC_INFO (0)
+#endif
+
+// Whether to provide "sys.exit" function
+#ifndef MICROPY_PY_SYS_EXIT
+#define MICROPY_PY_SYS_EXIT (0)
+#endif
+
+// Whether to provide sys.{stdin,stdout,stderr} objects
+#ifndef MICROPY_PY_SYS_STDFILES
+#define MICROPY_PY_SYS_STDFILES (0)
+#endif
+
+// Whether to provide sys.{stdin,stdout,stderr}.buffer object
+// This is implemented per-port
+#ifndef MICROPY_PY_SYS_STDIO_BUFFER
+#define MICROPY_PY_SYS_STDIO_BUFFER (0)
+#endif
+
+// Extended modules
+
+#ifndef MICROPY_PY_UCTYPES
+#define MICROPY_PY_UCTYPES (0)
+#endif
+
+#ifndef MICROPY_PY_UZLIB
+#define MICROPY_PY_UZLIB (0)
+#endif
+
+#ifndef MICROPY_PY_UJSON
+#define MICROPY_PY_UJSON (0)
+#endif
+
+#ifndef MICROPY_PY_URE
+#define MICROPY_PY_URE (0)
+#endif
+
+#ifndef MICROPY_PY_UHEAPQ
+#define MICROPY_PY_UHEAPQ (0)
+#endif
+
+#ifndef MICROPY_PY_UHASHLIB
+#define MICROPY_PY_UHASHLIB (0)
+#endif
+
+#ifndef MICROPY_PY_UBINASCII
+#define MICROPY_PY_UBINASCII (0)
+#endif
+
+#ifndef MICROPY_PY_URANDOM
+#define MICROPY_PY_URANDOM (0)
+#endif
+
+// Whether to include: randrange, randint, choice, random, uniform
+#ifndef MICROPY_PY_URANDOM_EXTRA_FUNCS
+#define MICROPY_PY_URANDOM_EXTRA_FUNCS (0)
+#endif
+
+#ifndef MICROPY_PY_MACHINE
+#define MICROPY_PY_MACHINE (0)
+#endif
+
+#ifndef MICROPY_PY_USSL
+#define MICROPY_PY_USSL (0)
+#endif
+
+#ifndef MICROPY_PY_WEBSOCKET
+#define MICROPY_PY_WEBSOCKET (0)
+#endif
+
+/*****************************************************************************/
+/* Hooks for a port to add builtins                                          */
+
+// Additional builtin function definitions - see builtintables.c:builtin_object_table for format.
+#ifndef MICROPY_PORT_BUILTINS
+#define MICROPY_PORT_BUILTINS
+#endif
+
+// Additional builtin module definitions - see builtintables.c:builtin_module_table for format.
+#ifndef MICROPY_PORT_BUILTIN_MODULES
+#define MICROPY_PORT_BUILTIN_MODULES
+#endif
+
+// Any module weak links - see builtintables.c:mp_builtin_module_weak_links_table.
+#ifndef MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS
+#define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS
+#endif
+
+// Additional constant definitions for the compiler - see compile.c:mp_constants_table.
+#ifndef MICROPY_PORT_CONSTANTS
+#define MICROPY_PORT_CONSTANTS
+#endif
+
+// Any root pointers for GC scanning - see mpstate.c
+#ifndef MICROPY_PORT_ROOT_POINTERS
+#define MICROPY_PORT_ROOT_POINTERS
+#endif
+
+/*****************************************************************************/
+/* Miscellaneous settings                                                    */
+
+// All uPy objects in ROM must be aligned on at least a 4 byte boundary
+// so that the small-int/qstr/pointer distinction can be made.  For machines
+// that don't do this (eg 16-bit CPU), define the following macro to something
+// like __attribute__((aligned(4))).
+#ifndef MICROPY_OBJ_BASE_ALIGNMENT
+#define MICROPY_OBJ_BASE_ALIGNMENT
+#endif
+
+// On embedded platforms, these will typically enable/disable irqs.
+#ifndef MICROPY_BEGIN_ATOMIC_SECTION
+#define MICROPY_BEGIN_ATOMIC_SECTION() (0)
+#endif
+#ifndef MICROPY_END_ATOMIC_SECTION
+#define MICROPY_END_ATOMIC_SECTION(state) (void)(state)
+#endif
+
+// Allow to override static modifier for global objects, e.g. to use with
+// object code analysis tools which don't support static symbols.
+#ifndef STATIC
+#define STATIC static
+#endif
+
+#define BITS_PER_BYTE (8)
+#define BITS_PER_WORD (BITS_PER_BYTE * BYTES_PER_WORD)
+// mp_int_t value with most significant bit set
+#define WORD_MSBIT_HIGH (((mp_uint_t)1) << (BYTES_PER_WORD * 8 - 1))
+
+// Make sure both MP_ENDIANNESS_LITTLE and MP_ENDIANNESS_BIG are
+// defined and that they are the opposite of each other.
+#if defined(MP_ENDIANNESS_LITTLE)
+#define MP_ENDIANNESS_BIG (!MP_ENDIANNESS_LITTLE)
+#elif defined(MP_ENDIANNESS_BIG)
+#define MP_ENDIANNESS_LITTLE (!MP_ENDIANNESS_BIG)
+#else
+  // Endiannes not defined by port so try to autodetect it.
+  #if defined(__BYTE_ORDER__)
+    #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+      #define MP_ENDIANNESS_LITTLE (1)
+    #else
+      #define MP_ENDIANNESS_LITTLE (0)
+    #endif
+  #elif defined(__LITTLE_ENDIAN__) || defined(__LITTLE_ENDIAN) || defined (_LITTLE_ENDIAN)
+    #define MP_ENDIANNESS_LITTLE (1)
+  #elif defined(__BIG_ENDIAN__) || defined(__BIG_ENDIAN) || defined (_BIG_ENDIAN)
+    #define MP_ENDIANNESS_LITTLE (0)
+  #else
+    #include <endian.h>
+      #if defined(__BYTE_ORDER)
+        #if __BYTE_ORDER == __LITTLE_ENDIAN
+          #define MP_ENDIANNESS_LITTLE (1)
+        #else
+          #define MP_ENDIANNESS_LITTLE (0)
+        #endif
+      #else
+        #error endianness not defined and cannot detect it
+      #endif
+  #endif
+  #define MP_ENDIANNESS_BIG (!MP_ENDIANNESS_LITTLE)
+#endif
+
+// Make a pointer to RAM callable (eg set lower bit for Thumb code)
+// (This scheme won't work if we want to mix Thumb and normal ARM code.)
+#ifndef MICROPY_MAKE_POINTER_CALLABLE
+#define MICROPY_MAKE_POINTER_CALLABLE(p) (p)
+#endif
+
+// If these MP_PLAT_*_EXEC macros are overridden then the memory allocated by them
+// must be somehow reachable for marking by the GC, since the native code
+// generators store pointers to GC managed memory in the code.
+#ifndef MP_PLAT_ALLOC_EXEC
+#define MP_PLAT_ALLOC_EXEC(min_size, ptr, size) do { *ptr = m_new(byte, min_size); *size = min_size; } while (0)
+#endif
+
+#ifndef MP_PLAT_FREE_EXEC
+#define MP_PLAT_FREE_EXEC(ptr, size) m_del(byte, ptr, size)
+#endif
+
+// This macro is used to do all output (except when MICROPY_PY_IO is defined)
+#ifndef MP_PLAT_PRINT_STRN
+#define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
+#endif
+
+#ifndef MP_SSIZE_MAX
+#define MP_SSIZE_MAX SSIZE_MAX
+#endif
+
+// printf format spec to use for mp_int_t and friends
+#ifndef INT_FMT
+#if defined(__LP64__)
+// Archs where mp_int_t == long, long != int
+#define UINT_FMT "%lu"
+#define INT_FMT "%ld"
+#elif defined(_WIN64)
+#define UINT_FMT "%llu"
+#define INT_FMT "%lld"
+#else
+// Archs where mp_int_t == int
+#define UINT_FMT "%u"
+#define INT_FMT "%d"
+#endif
+#endif //INT_FMT
+
+// Modifier for function which doesn't return
+#ifndef NORETURN
+#define NORETURN __attribute__((noreturn))
+#endif
+
+// Modifier for weak functions
+#ifndef MP_WEAK
+#define MP_WEAK __attribute__((weak))
+#endif
+
+// Condition is likely to be true, to help branch prediction
+#ifndef MP_LIKELY
+#define MP_LIKELY(x) __builtin_expect((x), 1)
+#endif
+
+// Condition is likely to be false, to help branch prediction
+#ifndef MP_UNLIKELY
+#define MP_UNLIKELY(x) __builtin_expect((x), 0)
+#endif
+
+#endif // __MICROPY_INCLUDED_PY_MPCONFIG_H__