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#!/usr/bin/env python3
#
# This file is part of the MicroPython project, http://micropython.org/
#
# The MIT License (MIT)
#
# Copyright (c) 2022 Andrew Leech
# Copyright (c) 2022 Jim Mussared
#
# 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.
from __future__ import print_function
import os
import re
import stat
import subprocess
NATIVE_ARCHS = {
"NATIVE_ARCH_NONE": "",
"NATIVE_ARCH_X86": "x86",
"NATIVE_ARCH_X64": "x64",
"NATIVE_ARCH_ARMV6": "armv6",
"NATIVE_ARCH_ARMV6M": "armv6m",
"NATIVE_ARCH_ARMV7M": "armv7m",
"NATIVE_ARCH_ARMV7EM": "armv7em",
"NATIVE_ARCH_ARMV7EMSP": "armv7emsp",
"NATIVE_ARCH_ARMV7EMDP": "armv7emdp",
"NATIVE_ARCH_XTENSA": "xtensa",
"NATIVE_ARCH_XTENSAWIN": "xtensawin",
"NATIVE_ARCH_RV32IMC": "rv32imc",
}
globals().update(NATIVE_ARCHS)
__all__ = ["version", "compile", "run", "CrossCompileError"] + list(NATIVE_ARCHS.keys())
class CrossCompileError(Exception):
pass
_VERSION_RE = re.compile("mpy-cross emitting mpy v([0-9]+)(?:.([0-9]+))?")
def _find_mpy_cross_binary(mpy_cross):
if mpy_cross:
return mpy_cross
return os.path.abspath(os.path.join(os.path.dirname(__file__), "../build/mpy-cross"))
def mpy_version(mpy_cross=None):
"""
Get the version and sub-version of the .mpy file format generated by this version of mpy-cross.
Returns: A tuple of `(mpy_version, mpy_sub_version)`
Optional keyword arguments:
- mpy_cross: Specific mpy-cross binary to use
"""
version_info = run(["--version"], mpy_cross=mpy_cross)
match = re.search(_VERSION_RE, version_info)
mpy_version, mpy_sub_version = int(match.group(1)), int(match.group(2) or "0")
return (
mpy_version,
mpy_sub_version,
)
def compile(src, dest=None, src_path=None, opt=None, march=None, mpy_cross=None, extra_args=None):
"""
Compile the specified .py file with mpy-cross.
Returns: Standard output from mpy-cross as a string.
Required arguments:
- src: The path to the .py file
Optional keyword arguments:
- dest: The output .mpy file. Defaults to `src` (with .mpy extension)
- src_path: The path to embed in the .mpy file (defaults to `src`)
- opt: Optimisation level (0-3, default 0)
- march: One of the `NATIVE_ARCH_*` constants (defaults to NATIVE_ARCH_NONE)
- mpy_cross: Specific mpy-cross binary to use
- extra_args: Additional arguments to pass to mpy-cross (e.g. `["-X", "emit=native"]`)
"""
if not src:
raise ValueError("src is required")
if not os.path.exists(src):
raise CrossCompileError("Input .py file not found: {}.".format(src))
args = []
if src_path:
args += ["-s", src_path]
if dest:
args += ["-o", dest]
if march:
args += ["-march=" + march]
if opt is not None:
args += ["-O{}".format(opt)]
if extra_args:
args += extra_args
args += [src]
run(args, mpy_cross)
def run(args, mpy_cross=None):
"""
Run mpy-cross with the specified command line arguments.
Prefer to use `compile()` instead.
Returns: Standard output from mpy-cross as a string.
Optional keyword arguments:
- mpy_cross: Specific mpy-cross binary to use
"""
mpy_cross = _find_mpy_cross_binary(mpy_cross)
if not os.path.exists(mpy_cross):
raise CrossCompileError("mpy-cross binary not found at {}.".format(mpy_cross))
try:
st = os.stat(mpy_cross)
os.chmod(mpy_cross, st.st_mode | stat.S_IEXEC)
except OSError:
pass
try:
return subprocess.check_output([mpy_cross] + args, stderr=subprocess.STDOUT).decode()
except subprocess.CalledProcessError as er:
raise CrossCompileError(er.output.decode())
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