124 lines
4.5 KiB
Python
Executable File
124 lines
4.5 KiB
Python
Executable File
"""Creates a compilation database for the given keyboard build.
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"""
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import itertools
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import json
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import os
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import re
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import shlex
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import shutil
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from functools import lru_cache
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from pathlib import Path
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from typing import Dict, Iterator, List, Union
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from milc import cli, MILC
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from qmk.commands import create_make_command
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from qmk.constants import QMK_FIRMWARE
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from qmk.decorators import automagic_keyboard, automagic_keymap
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@lru_cache(maxsize=10)
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def system_libs(binary: str) -> List[Path]:
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"""Find the system include directory that the given build tool uses.
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"""
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cli.log.debug("searching for system library directory for binary: %s", binary)
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bin_path = shutil.which(binary)
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return list(Path(bin_path).resolve().parent.parent.glob("*/include")) if bin_path else []
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file_re = re.compile(r'printf "Compiling: ([^"]+)')
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cmd_re = re.compile(r'LOG=\$\((.+?)&&')
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def parse_make_n(f: Iterator[str]) -> List[Dict[str, str]]:
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"""parse the output of `make -n <target>`
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This function makes many assumptions about the format of your build log.
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This happens to work right now for qmk.
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"""
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state = 'start'
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this_file = None
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records = []
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for line in f:
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if state == 'start':
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m = file_re.search(line)
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if m:
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this_file = m.group(1)
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state = 'cmd'
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if state == 'cmd':
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assert this_file
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m = cmd_re.search(line)
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if m:
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# we have a hit!
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this_cmd = m.group(1)
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args = shlex.split(this_cmd)
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args += ['-I%s' % s for s in system_libs(args[0])]
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new_cmd = ' '.join(shlex.quote(s) for s in args if s != '-mno-thumb-interwork')
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records.append({"directory": str(QMK_FIRMWARE.resolve()), "command": new_cmd, "file": this_file})
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state = 'start'
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return records
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@cli.argument('-kb', '--keyboard', help='The keyboard to build a firmware for. Ignored when a configurator export is supplied.')
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@cli.argument('-km', '--keymap', help='The keymap to build a firmware for. Ignored when a configurator export is supplied.')
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@cli.subcommand('Create a compilation database.')
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@automagic_keyboard
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@automagic_keymap
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def generate_compilation_database(cli: MILC) -> Union[bool, int]:
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"""Creates a compilation database for the given keyboard build.
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Does a make clean, then a make -n for this target and uses the dry-run output to create
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a compilation database (compile_commands.json). This file can help some IDEs and
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IDE-like editors work better. For more information about this:
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https://clang.llvm.org/docs/JSONCompilationDatabase.html
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"""
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command = None
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# check both config domains: the magic decorator fills in `generate_compilation_database` but the user is
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# more likely to have set `compile` in their config file.
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current_keyboard = cli.config.generate_compilation_database.keyboard or cli.config.user.keyboard
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current_keymap = cli.config.generate_compilation_database.keymap or cli.config.user.keymap
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if current_keyboard and current_keymap:
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# Generate the make command for a specific keyboard/keymap.
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command = create_make_command(current_keyboard, current_keymap, dry_run=True)
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elif not current_keyboard:
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cli.log.error('Could not determine keyboard!')
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elif not current_keymap:
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cli.log.error('Could not determine keymap!')
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if not command:
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cli.log.error('You must supply both `--keyboard` and `--keymap`, or be in a directory for a keyboard or keymap.')
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cli.echo('usage: qmk compiledb [-kb KEYBOARD] [-km KEYMAP]')
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return False
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# remove any environment variable overrides which could trip us up
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env = os.environ.copy()
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env.pop("MAKEFLAGS", None)
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# re-use same executable as the main make invocation (might be gmake)
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clean_command = [command[0], 'clean']
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cli.log.info('Making clean with {fg_cyan}%s', ' '.join(clean_command))
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cli.run(clean_command, capture_output=False, check=True, env=env)
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cli.log.info('Gathering build instructions from {fg_cyan}%s', ' '.join(command))
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result = cli.run(command, capture_output=True, check=True, env=env)
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db = parse_make_n(result.stdout.splitlines())
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if not db:
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cli.log.error("Failed to parse output from make output:\n%s", result.stdout)
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return False
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cli.log.info("Found %s compile commands", len(db))
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dbpath = QMK_FIRMWARE / 'compile_commands.json'
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cli.log.info(f"Writing build database to {dbpath}")
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dbpath.write_text(json.dumps(db, indent=4))
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return True
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