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#!/usr/bin/env python3
#
# Copyright (c) 2021 Raspberry Pi (Trading) Ltd.
#
# SPDX-License-Identifier: BSD-3-Clause
#
#
# Script to scan the Raspberry Pi Pico SDK tree searching for CMake build defines
# Outputs a tab separated file of the configuration item:
# name location platform chip description type default group
#
# Usage:
#
# tools/extract_build_defines.py <root of repo> [output file]
#
# If not specified, output file will be `pico_build_defines.tsv`
import os
import sys
import re
import csv
import logging
from collections import defaultdict
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
scandir = sys.argv[1]
outfile = sys.argv[2] if len(sys.argv) > 2 else 'pico_build_defines.tsv'
BASE_CONFIG_NAME = 'PICO_CONFIG'
BASE_CONFIG_RE = re.compile(r'\b{}\b'.format(BASE_CONFIG_NAME))
BASE_CMAKE_CONFIG_NAME = 'PICO_CMAKE_CONFIG'
BASE_CMAKE_CONFIG_RE = re.compile(r'\b{}\b'.format(BASE_CMAKE_CONFIG_NAME))
BASE_BUILD_DEFINE_NAME = 'PICO_BUILD_DEFINE'
BASE_BUILD_DEFINE_RE = re.compile(r'\b{}\b'.format(BASE_BUILD_DEFINE_NAME))
BUILD_DEFINE_RE = re.compile(r'#\s+{}:\s+(\w+),\s+([^,]+)(?:,\s+(.*))?$'.format(BASE_BUILD_DEFINE_NAME))
ALLOWED_CONFIG_PROPERTIES = set(['type', 'default', 'min', 'max', 'group'])
CHIP_NAMES = ["rp2040", "rp2350"]
chips_all_configs = defaultdict(dict)
all_attrs = set()
chips_all_descriptions = defaultdict(dict)
def ValidateAttrs(config_name, config_attrs, file_path, linenum):
_type = config_attrs.get('type')
# Validate attrs
for key in config_attrs.keys():
if key not in ALLOWED_CONFIG_PROPERTIES:
raise Exception('{} at {}:{} has unexpected property "{}"'.format(config_name, file_path, linenum, key))
if _type == 'int':
_min = _max = _default = None
if config_attrs.get('min', None) is not None:
value = config_attrs['min']
m = re.match(r'^(\d+)e(\d+)$', value.lower())
if m:
_min = int(m.group(1)) * 10**int(m.group(2))
else:
_min = int(value, 0)
if config_attrs.get('max', None) is not None:
value = config_attrs['max']
m = re.match(r'^(\d+)e(\d+)$', value.lower())
if m:
_max = int(m.group(1)) * 10**int(m.group(2))
else:
_max = int(value, 0)
if config_attrs.get('default', None) is not None:
if '/' not in config_attrs['default']:
try:
value = config_attrs['default']
m = re.match(r'^(\d+)e(\d+)$', value.lower())
if m:
_default = int(m.group(1)) * 10**int(m.group(2))
else:
_default = int(value, 0)
except ValueError:
pass
if _min is not None and _max is not None:
if _min > _max:
raise Exception('{} at {}:{} has min {} > max {}'.format(config_name, file_path, linenum, config_attrs['min'], config_attrs['max']))
if _min is not None and _default is not None:
if _min > _default:
raise Exception('{} at {}:{} has min {} > default {}'.format(config_name, file_path, linenum, config_attrs['min'], config_attrs['default']))
if _default is not None and _max is not None:
if _default > _max:
raise Exception('{} at {}:{} has default {} > max {}'.format(config_name, file_path, linenum, config_attrs['default'], config_attrs['max']))
elif _type == 'bool':
assert 'min' not in config_attrs
assert 'max' not in config_attrs
_default = config_attrs.get('default', None)
if _default is not None:
if '/' not in _default:
if (_default not in ('0', '1')) and (_default not in all_config_names):
logger.info('{} at {}:{} has non-integer default value "{}"'.format(config_name, file_path, linenum, config_attrs['default']))
elif _type == 'string':
assert 'min' not in config_attrs
assert 'max' not in config_attrs
_default = config_attrs.get('default', None)
elif _type == 'list':
assert 'min' not in config_attrs
assert 'max' not in config_attrs
_default = config_attrs.get('default', None)
else:
raise Exception("Found unknown {} type {} at {}:{}".format(BASE_BUILD_DEFINE_NAME, _type, file_path, linenum))
# Scan all CMakeLists.txt and .cmake files in the specific path, recursively.
for dirpath, dirnames, filenames in os.walk(scandir):
for filename in filenames:
file_ext = os.path.splitext(filename)[1]
if filename == 'CMakeLists.txt' or file_ext == '.cmake':
file_path = os.path.join(dirpath, filename)
applicable = "all"
for chip in (*CHIP_NAMES, "host"):
if "/{}/".format(chip) in dirpath:
applicable = chip
break
with open(file_path, encoding="ISO-8859-1") as fh:
linenum = 0
for line in fh.readlines():
linenum += 1
line = line.strip()
if BASE_CONFIG_RE.search(line):
raise Exception("Found {} at {}:{} ({}) which isn't expected in {} files".format(BASE_CONFIG_NAME, file_path, linenum, line, filename if filename == 'CMakeLists.txt' else file_ext))
elif BASE_BUILD_DEFINE_RE.search(line):
m = BUILD_DEFINE_RE.match(line)
if not m:
if re.match(r"^\s*#\s*# ", line):
logger.info("Possible misformatted {} at {}:{} ({})".format(BASE_BUILD_DEFINE_NAME, file_path, linenum, line))
else:
raise Exception("Found misformatted {} at {}:{} ({})".format(BASE_BUILD_DEFINE_NAME, file_path, linenum, line))
else:
config_name = m.group(1)
config_description = m.group(2)
_attrs = m.group(3)
# allow commas to appear inside brackets by converting them to and from NULL chars
_attrs = re.sub(r'(\(.+\))', lambda m: m.group(1).replace(',', '\0'), _attrs)
if '=' in config_description:
raise Exception("For {} at {}:{} the description was set to '{}' - has the description field been omitted?".format(config_name, file_path, linenum, config_description))
all_descriptions = chips_all_descriptions[applicable]
if config_description in all_descriptions:
raise Exception("Found description {} at {}:{} but it was already used at {}:{}".format(config_description, file_path, linenum, os.path.join(scandir, all_descriptions[config_description]['filename']), all_descriptions[config_description]['line_number']))
else:
all_descriptions[config_description] = {'config_name': config_name, 'filename': os.path.relpath(file_path, scandir), 'line_number': linenum}
config_attrs = {}
prev = None
# Handle case where attr value contains a comma
for item in _attrs.split(','):
if "=" not in item:
assert(prev)
item = prev + "," + item
try:
k, v = (i.strip() for i in item.split('='))
except ValueError:
raise Exception('{} at {}:{} has malformed value {}'.format(config_name, file_path, linenum, item))
config_attrs[k] = v.replace('\0', ',')
all_attrs.add(k)
prev = item
#print(file_path, config_name, config_attrs)
if 'group' not in config_attrs:
raise Exception('{} at {}:{} has no group attribute'.format(config_name, file_path, linenum))
#print(file_path, config_name, config_attrs)
all_configs = chips_all_configs[applicable]
if config_name in all_configs:
raise Exception("Found {} at {}:{} but it was already declared at {}:{}".format(config_name, file_path, linenum, os.path.join(scandir, all_configs[config_name]['filename']), all_configs[config_name]['line_number']))
else:
all_configs[config_name] = {'attrs': config_attrs, 'filename': os.path.relpath(file_path, scandir), 'line_number': linenum, 'description': config_description}
all_config_names = set()
for all_configs in chips_all_configs.values():
all_config_names.update(all_configs.keys())
for applicable, all_configs in chips_all_configs.items():
for config_name, config_obj in all_configs.items():
file_path = os.path.join(scandir, config_obj['filename'])
linenum = config_obj['line_number']
ValidateAttrs(config_name, config_obj['attrs'], file_path, linenum)
# All settings in "host" should also be in "all"
for config_name, config_obj in chips_all_configs["host"].items():
if config_name not in chips_all_configs["all"]:
file_path = os.path.join(scandir, config_obj['filename'])
linenum = config_obj['line_number']
raise Exception("Found 'host' config {} at {}:{}, but no matching non-host config found".format(config_name, file_path, linenum))
# Any chip-specific settings should not be in "all"
for chip in CHIP_NAMES:
for config_name, chip_config_obj in chips_all_configs[chip].items():
if config_name in chips_all_configs["all"]:
all_config_obj = chips_all_configs["all"][config_name]
chip_file_path = os.path.join(scandir, chip_config_obj['filename'])
chip_linenum = chip_config_obj['line_number']
all_file_path = os.path.join(scandir, all_config_obj['filename'])
all_linenum = all_config_obj['line_number']
raise Exception("'{}' config {} at {}:{} also found at {}:{}".format(chip, config_name, chip_file_path, chip_linenum, all_file_path, all_linenum))
def build_mismatch_exception_message(name, thing, config_obj1, value1, config_obj2, value2):
obj1_filepath = os.path.join(scandir, config_obj1['filename'])
obj2_filepath = os.path.join(scandir, config_obj2['filename'])
return "'{}' {} mismatch at {}:{} ({}) and {}:{} ({})".format(name, thing, obj1_filepath, config_obj1['line_number'], value1, obj2_filepath, config_obj2['line_number'], value2)
# Check that any identically-named setttings have appropriate matching attributes
for applicable in chips_all_configs:
for other in chips_all_configs:
if other == applicable:
continue
for config_name, applicable_config_obj in chips_all_configs[applicable].items():
if config_name in chips_all_configs[other]:
other_config_obj = chips_all_configs[other][config_name]
# Check that fields match
for field in ['description']:
applicable_value = applicable_config_obj[field]
other_value = other_config_obj[field]
if applicable_value != other_value:
raise Exception(build_mismatch_exception_message(config_name, field, applicable_config_obj, applicable_value, other_config_obj, other_value))
# Check that attributes match
for attr in applicable_config_obj['attrs']:
if attr != 'default': # totally fine for defaults to vary per-platform
applicable_value = applicable_config_obj['attrs'][attr]
other_value = other_config_obj['attrs'][attr]
if applicable_value != other_value:
raise Exception(build_mismatch_exception_message(config_name, "attribute '{}'".format(attr), applicable_config_obj, applicable_value, other_config_obj, other_value))
# Sort the output alphabetically by name and then by chip
output_rows = set()
for chip in (*CHIP_NAMES, "host", "all"):
if chip in chips_all_configs:
all_configs = chips_all_configs[chip]
for config_name in all_configs:
output_rows.add((config_name, chip))
with open(outfile, 'w', newline='') as csvfile:
fieldnames = ('name', 'location', 'platform', 'chip', 'description', 'type') + tuple(sorted(all_attrs - set(['type'])))
writer = csv.DictWriter(csvfile, fieldnames=fieldnames, extrasaction='ignore', dialect='excel-tab')
writer.writeheader()
for config_name, chip in sorted(output_rows):
config_obj = chips_all_configs[chip][config_name]
writer.writerow({'name': config_name, 'location': '/{}:{}'.format(config_obj['filename'], config_obj['line_number']), 'platform': "host" if chip == "host" else "rp2", 'chip': chip if chip in CHIP_NAMES else "all", 'description': config_obj['description'], **config_obj['attrs']})
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