From 590b405468fec906a51767a5cda4aa30ada5d52f Mon Sep 17 00:00:00 2001 From: Bao Date: Wed, 15 Sep 2021 23:59:57 -0500 Subject: New CLI subcommand to create clang-compatible compilation database (`compile_commands.json`) (#14370) * pulled source from dev branch * missed a file from origin * formatting * revised argument names. relaxed matching rules to work for avr too * add docstrings * added docs. tightened up regex * remove unused imports * cleaning up command file. use existing qmk dir constant * rename parser library file * move lib functions into command file. there are only 2 and they aren't large * currently debugging... * more robustly find config * updated docs * remove unused imports * reuse make executable from the main make command * pulled source from dev branch * missed a file from origin * formatting * revised argument names. relaxed matching rules to work for avr too * add docstrings * added docs. tightened up regex * remove unused imports * cleaning up command file. use existing qmk dir constant * rename parser library file * move lib functions into command file. there are only 2 and they aren't large * currently debugging... * more robustly find config * updated docs * remove unused imports * reuse make executable from the main make command * remove MAKEFLAGS from environment for better control over process management * Update .gitignore Co-authored-by: Michael Forster * add a usage line to docs * doc change as suggested Co-authored-by: Nick Brassel * rename command * remove debug print statements * generate-compilation-database: fix arg handling * generate-comilation-db: improve error handling * use cli.run() instead of Popen() Co-authored-by: Xton Co-authored-by: Christon DeWan Co-authored-by: Michael Forster Co-authored-by: Nick Brassel --- lib/python/qmk/cli/__init__.py | 1 + .../qmk/cli/generate/compilation_database.py | 123 +++++++++++++++++++++ lib/python/qmk/commands.py | 14 ++- 3 files changed, 134 insertions(+), 4 deletions(-) create mode 100755 lib/python/qmk/cli/generate/compilation_database.py (limited to 'lib/python') diff --git a/lib/python/qmk/cli/__init__.py b/lib/python/qmk/cli/__init__.py index 292dcbe812..944938824c 100644 --- a/lib/python/qmk/cli/__init__.py +++ b/lib/python/qmk/cli/__init__.py @@ -44,6 +44,7 @@ subcommands = [ 'qmk.cli.format.python', 'qmk.cli.format.text', 'qmk.cli.generate.api', + 'qmk.cli.generate.compilation_database', 'qmk.cli.generate.config_h', 'qmk.cli.generate.dfu_header', 'qmk.cli.generate.docs', diff --git a/lib/python/qmk/cli/generate/compilation_database.py b/lib/python/qmk/cli/generate/compilation_database.py new file mode 100755 index 0000000000..2748d96e7a --- /dev/null +++ b/lib/python/qmk/cli/generate/compilation_database.py @@ -0,0 +1,123 @@ +"""Creates a compilation database for the given keyboard build. +""" + +import itertools +import json +import os +import re +import shlex +import shutil +from functools import lru_cache +from pathlib import Path +from typing import Dict, Iterator, List, Union + +from milc import cli, MILC + +from qmk.commands import create_make_command +from qmk.constants import QMK_FIRMWARE +from qmk.decorators import automagic_keyboard, automagic_keymap + + +@lru_cache(maxsize=10) +def system_libs(binary: str) -> List[Path]: + """Find the system include directory that the given build tool uses. + """ + cli.log.debug("searching for system library directory for binary: %s", binary) + bin_path = shutil.which(binary) + return list(Path(bin_path).resolve().parent.parent.glob("*/include")) if bin_path else [] + + +file_re = re.compile(r'printf "Compiling: ([^"]+)') +cmd_re = re.compile(r'LOG=\$\((.+?)&&') + + +def parse_make_n(f: Iterator[str]) -> List[Dict[str, str]]: + """parse the output of `make -n ` + + This function makes many assumptions about the format of your build log. + This happens to work right now for qmk. + """ + + state = 'start' + this_file = None + records = [] + for line in f: + if state == 'start': + m = file_re.search(line) + if m: + this_file = m.group(1) + state = 'cmd' + + if state == 'cmd': + assert this_file + m = cmd_re.search(line) + if m: + # we have a hit! + this_cmd = m.group(1) + args = shlex.split(this_cmd) + args += ['-I%s' % s for s in system_libs(args[0])] + new_cmd = ' '.join(shlex.quote(s) for s in args if s != '-mno-thumb-interwork') + records.append({"directory": str(QMK_FIRMWARE.resolve()), "command": new_cmd, "file": this_file}) + state = 'start' + + return records + + +@cli.argument('-kb', '--keyboard', help='The keyboard to build a firmware for. Ignored when a configurator export is supplied.') +@cli.argument('-km', '--keymap', help='The keymap to build a firmware for. Ignored when a configurator export is supplied.') +@cli.subcommand('Create a compilation database.') +@automagic_keyboard +@automagic_keymap +def generate_compilation_database(cli: MILC) -> Union[bool, int]: + """Creates a compilation database for the given keyboard build. + + Does a make clean, then a make -n for this target and uses the dry-run output to create + a compilation database (compile_commands.json). This file can help some IDEs and + IDE-like editors work better. For more information about this: + + https://clang.llvm.org/docs/JSONCompilationDatabase.html + """ + command = None + # check both config domains: the magic decorator fills in `generate_compilation_database` but the user is + # more likely to have set `compile` in their config file. + current_keyboard = cli.config.generate_compilation_database.keyboard or cli.config.user.keyboard + current_keymap = cli.config.generate_compilation_database.keymap or cli.config.user.keymap + + if current_keyboard and current_keymap: + # Generate the make command for a specific keyboard/keymap. + command = create_make_command(current_keyboard, current_keymap, dry_run=True) + elif not current_keyboard: + cli.log.error('Could not determine keyboard!') + elif not current_keymap: + cli.log.error('Could not determine keymap!') + + if not command: + cli.log.error('You must supply both `--keyboard` and `--keymap`, or be in a directory for a keyboard or keymap.') + cli.echo('usage: qmk compiledb [-kb KEYBOARD] [-km KEYMAP]') + return False + + # remove any environment variable overrides which could trip us up + env = os.environ.copy() + env.pop("MAKEFLAGS", None) + + # re-use same executable as the main make invocation (might be gmake) + clean_command = [command[0], 'clean'] + cli.log.info('Making clean with {fg_cyan}%s', ' '.join(clean_command)) + cli.run(clean_command, capture_output=False, check=True, env=env) + + cli.log.info('Gathering build instructions from {fg_cyan}%s', ' '.join(command)) + + result = cli.run(command, capture_output=True, check=True, env=env) + db = parse_make_n(result.stdout.splitlines()) + if not db: + cli.log.error("Failed to parse output from make output:\n%s", result.stdout) + return False + + cli.log.info("Found %s compile commands", len(db)) + + dbpath = QMK_FIRMWARE / 'compile_commands.json' + + cli.log.info(f"Writing build database to {dbpath}") + dbpath.write_text(json.dumps(db, indent=4)) + + return True diff --git a/lib/python/qmk/commands.py b/lib/python/qmk/commands.py index 01c23b2612..2995a5fdab 100644 --- a/lib/python/qmk/commands.py +++ b/lib/python/qmk/commands.py @@ -28,7 +28,7 @@ def _find_make(): return make_cmd -def create_make_target(target, parallel=1, **env_vars): +def create_make_target(target, dry_run=False, parallel=1, **env_vars): """Create a make command Args: @@ -36,6 +36,9 @@ def create_make_target(target, parallel=1, **env_vars): target Usually a make rule, such as 'clean' or 'all'. + dry_run + make -n -- don't actually build + parallel The number of make jobs to run in parallel @@ -52,10 +55,10 @@ def create_make_target(target, parallel=1, **env_vars): for key, value in env_vars.items(): env.append(f'{key}={value}') - return [make_cmd, *get_make_parallel_args(parallel), *env, target] + return [make_cmd, *(['-n'] if dry_run else []), *get_make_parallel_args(parallel), *env, target] -def create_make_command(keyboard, keymap, target=None, parallel=1, **env_vars): +def create_make_command(keyboard, keymap, target=None, dry_run=False, parallel=1, **env_vars): """Create a make compile command Args: @@ -69,6 +72,9 @@ def create_make_command(keyboard, keymap, target=None, parallel=1, **env_vars): target Usually a bootloader. + dry_run + make -n -- don't actually build + parallel The number of make jobs to run in parallel @@ -84,7 +90,7 @@ def create_make_command(keyboard, keymap, target=None, parallel=1, **env_vars): if target: make_args.append(target) - return create_make_target(':'.join(make_args), parallel, **env_vars) + return create_make_target(':'.join(make_args), dry_run=dry_run, parallel=parallel, **env_vars) def get_git_version(current_time, repo_dir='.', check_dir='.'): -- cgit v1.2.1