From 590b405468fec906a51767a5cda4aa30ada5d52f Mon Sep 17 00:00:00 2001
From: Bao <qubidt@gmail.com>
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 <forster@google.com>
* add a usage line to docs
* doc change as suggested
Co-authored-by: Nick Brassel <nick@tzarc.org>
* 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 <cdewan@apple.com>
Co-authored-by: Christon DeWan <cmdpix@mac.com>
Co-authored-by: Michael Forster <forster@google.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>
---
.../qmk/cli/generate/compilation_database.py | 123 +++++++++++++++++++++
1 file changed, 123 insertions(+)
create mode 100755 lib/python/qmk/cli/generate/compilation_database.py
(limited to 'lib/python/qmk/cli/generate')
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 <target>`
+
+ 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
--
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