blob: 9fa5f81fd8f68dc519da201cd593c96f89675976 [file] [log] [blame]
# Copyright (c) 2018 Foundries.io
#
# SPDX-License-Identifier: Apache-2.0
import argparse
import os
import pathlib
import shlex
import sys
from west import log
from west.configuration import config
from zcmake import DEFAULT_CMAKE_GENERATOR, run_cmake, run_build, CMakeCache
from build_helpers import is_zephyr_build, find_build_dir, \
FIND_BUILD_DIR_DESCRIPTION
from zephyr_ext_common import Forceable
_ARG_SEPARATOR = '--'
BUILD_USAGE = '''\
west build [-h] [-b BOARD] [-d BUILD_DIR]
[-t TARGET] [-p {auto, always, never}] [-c] [--cmake-only]
[-n] [-o BUILD_OPT] [-f]
[source_dir] -- [cmake_opt [cmake_opt ...]]
'''
BUILD_DESCRIPTION = f'''\
Convenience wrapper for building Zephyr applications.
{FIND_BUILD_DIR_DESCRIPTION}
positional arguments:
source_dir application source directory
cmake_opt extra options to pass to cmake; implies -c
(these must come after "--" as shown above)
'''
PRISTINE_DESCRIPTION = """\
A "pristine" build directory is empty. The -p option controls
whether the build directory is made pristine before the build
is done. A bare '--pristine' with no value is the same as
--pristine=always. Setting --pristine=auto uses heuristics to
guess if a pristine build may be necessary."""
def _banner(msg):
log.inf('-- west build: ' + msg, colorize=True)
def config_get(option, fallback):
return config.get('build', option, fallback=fallback)
def config_getboolean(option, fallback):
return config.getboolean('build', option, fallback=fallback)
class AlwaysIfMissing(argparse.Action):
def __call__(self, parser, namespace, values, option_string=None):
setattr(namespace, self.dest, values or 'always')
class Build(Forceable):
def __init__(self):
super(Build, self).__init__(
'build',
# Keep this in sync with the string in west-commands.yml.
'compile a Zephyr application',
BUILD_DESCRIPTION,
accepts_unknown_args=True)
self.source_dir = None
'''Source directory for the build, or None on error.'''
self.build_dir = None
'''Final build directory used to run the build, or None on error.'''
self.created_build_dir = False
'''True if the build directory was created; False otherwise.'''
self.run_cmake = False
'''True if CMake was run; False otherwise.
Note: this only describes CMake runs done by this command. The
build system generated by CMake may also update itself due to
internal logic.'''
self.cmake_cache = None
'''Final parsed CMake cache for the build, or None on error.'''
def do_add_parser(self, parser_adder):
parser = parser_adder.add_parser(
self.name,
help=self.help,
formatter_class=argparse.RawDescriptionHelpFormatter,
description=self.description,
usage=BUILD_USAGE)
# Remember to update west-completion.bash if you add or remove
# flags
parser.add_argument('-b', '--board', help='board to build for')
# Hidden option for backwards compatibility
parser.add_argument('-s', '--source-dir', help=argparse.SUPPRESS)
parser.add_argument('-d', '--build-dir',
help='build directory to create or use')
self.add_force_arg(parser)
group = parser.add_argument_group('cmake and build tool')
group.add_argument('-c', '--cmake', action='store_true',
help='force a cmake run')
group.add_argument('--cmake-only', action='store_true',
help="just run cmake; don't build (implies -c)")
group.add_argument('-t', '--target',
help='''run build system target TARGET
(try "-t usage")''')
group.add_argument('-o', '--build-opt', default=[], action='append',
help='''options to pass to the build tool
(make or ninja); may be given more than once''')
group.add_argument('-n', '--just-print', '--dry-run', '--recon',
dest='dry_run', action='store_true',
help="just print build commands; don't run them")
group = parser.add_argument_group('pristine builds',
PRISTINE_DESCRIPTION)
group.add_argument('-p', '--pristine', choices=['auto', 'always',
'never'], action=AlwaysIfMissing, nargs='?',
help='pristine build folder setting')
return parser
def do_run(self, args, remainder):
self.args = args # Avoid having to pass them around
self.config_board = config_get('board', None)
log.dbg('args: {} remainder: {}'.format(args, remainder),
level=log.VERBOSE_EXTREME)
# Store legacy -s option locally
source_dir = self.args.source_dir
self._parse_remainder(remainder)
if source_dir:
if self.args.source_dir:
log.die("source directory specified twice:({} and {})".format(
source_dir, self.args.source_dir))
self.args.source_dir = source_dir
log.dbg('source_dir: {} cmake_opts: {}'.format(self.args.source_dir,
self.args.cmake_opts),
level=log.VERBOSE_EXTREME)
self._sanity_precheck()
self._setup_build_dir()
if args.pristine is not None:
pristine = args.pristine
else:
# Load the pristine={auto, always, never} configuration value
pristine = config_get('pristine', 'never')
if pristine not in ['auto', 'always', 'never']:
log.wrn(
'treating unknown build.pristine value "{}" as "never"'.
format(pristine))
pristine = 'never'
self.auto_pristine = (pristine == 'auto')
log.dbg('pristine: {} auto_pristine: {}'.format(pristine,
self.auto_pristine),
level=log.VERBOSE_VERY)
if is_zephyr_build(self.build_dir):
if pristine == 'always':
self._run_pristine()
self.run_cmake = True
else:
self._update_cache()
if (self.args.cmake or self.args.cmake_opts or
self.args.cmake_only):
self.run_cmake = True
else:
self.run_cmake = True
self.source_dir = self._find_source_dir()
self._sanity_check()
board, origin = self._find_board()
self._run_cmake(board, origin, self.args.cmake_opts)
if args.cmake_only:
return
self._sanity_check()
self._update_cache()
self._run_build(args.target)
def _find_board(self):
board, origin = None, None
if self.cmake_cache:
board, origin = (self.cmake_cache.get('CACHED_BOARD'),
'CMakeCache.txt')
# A malformed CMake cache may exist, but not have a board.
# This happens if there's a build error from a previous run.
if board is not None:
return (board, origin)
if self.args.board:
board, origin = self.args.board, 'command line'
elif 'BOARD' in os.environ:
board, origin = os.environ['BOARD'], 'env'
elif self.config_board is not None:
board, origin = self.config_board, 'configfile'
return board, origin
def _parse_remainder(self, remainder):
self.args.source_dir = None
self.args.cmake_opts = None
try:
# Only one source_dir is allowed, as the first positional arg
if remainder[0] != _ARG_SEPARATOR:
self.args.source_dir = remainder[0]
remainder = remainder[1:]
# Only the first argument separator is consumed, the rest are
# passed on to CMake
if remainder[0] == _ARG_SEPARATOR:
remainder = remainder[1:]
if remainder:
self.args.cmake_opts = remainder
except IndexError:
return
def _sanity_precheck(self):
app = self.args.source_dir
if app:
self.check_force(
os.path.isdir(app),
'source directory {} does not exist'.format(app))
self.check_force(
'CMakeLists.txt' in os.listdir(app),
"{} doesn't contain a CMakeLists.txt".format(app))
def _update_cache(self):
try:
self.cmake_cache = CMakeCache.from_build_dir(self.build_dir)
except FileNotFoundError:
pass
def _setup_build_dir(self):
# Initialize build_dir and created_build_dir attributes.
# If we created the build directory, we must run CMake.
log.dbg('setting up build directory', level=log.VERBOSE_EXTREME)
# The CMake Cache has not been loaded yet, so this is safe
board, _ = self._find_board()
source_dir = self._find_source_dir()
app = os.path.split(source_dir)[1]
build_dir = find_build_dir(self.args.build_dir, board=board,
source_dir=source_dir, app=app)
if not build_dir:
log.die('Unable to determine a default build folder. Check '
'your build.dir-fmt configuration option')
if os.path.exists(build_dir):
if not os.path.isdir(build_dir):
log.die('build directory {} exists and is not a directory'.
format(build_dir))
else:
os.makedirs(build_dir, exist_ok=False)
self.created_build_dir = True
self.run_cmake = True
self.build_dir = build_dir
def _find_source_dir(self):
# Initialize source_dir attribute, either from command line argument,
# implicitly from the build directory's CMake cache, or using the
# default (current working directory).
log.dbg('setting up source directory', level=log.VERBOSE_EXTREME)
if self.args.source_dir:
source_dir = self.args.source_dir
elif self.cmake_cache:
source_dir = self.cmake_cache.get('CMAKE_HOME_DIRECTORY')
if not source_dir:
# This really ought to be there. The build directory
# must be corrupted somehow. Let's see what we can do.
log.die('build directory', self.build_dir,
'CMake cache has no CMAKE_HOME_DIRECTORY;',
'please give a source_dir')
else:
source_dir = os.getcwd()
return os.path.abspath(source_dir)
def _sanity_check_source_dir(self):
if self.source_dir == self.build_dir:
# There's no forcing this.
log.die('source and build directory {} cannot be the same; '
'use --build-dir {} to specify a build directory'.
format(self.source_dir, self.build_dir))
srcrel = os.path.relpath(self.source_dir)
self.check_force(
not is_zephyr_build(self.source_dir),
'it looks like {srcrel} is a build directory: '
'did you mean --build-dir {srcrel} instead?'.
format(srcrel=srcrel))
self.check_force(
'CMakeLists.txt' in os.listdir(self.source_dir),
'source directory "{srcrel}" does not contain '
'a CMakeLists.txt; is this really what you '
'want to build? (Use -s SOURCE_DIR to specify '
'the application source directory)'.
format(srcrel=srcrel))
def _sanity_check(self):
# Sanity check the build configuration.
# Side effect: may update cmake_cache attribute.
log.dbg('sanity checking the build', level=log.VERBOSE_EXTREME)
self._sanity_check_source_dir()
if not self.cmake_cache:
return # That's all we can check without a cache.
if "CMAKE_PROJECT_NAME" not in self.cmake_cache:
# This happens sometimes when a build system is not
# completely generated due to an error during the
# CMake configuration phase.
self.run_cmake = True
cached_app = self.cmake_cache.get('APPLICATION_SOURCE_DIR')
log.dbg('APPLICATION_SOURCE_DIR:', cached_app,
level=log.VERBOSE_EXTREME)
source_abs = (os.path.abspath(self.args.source_dir)
if self.args.source_dir else None)
cached_abs = os.path.abspath(cached_app) if cached_app else None
log.dbg('pristine:', self.auto_pristine, level=log.VERBOSE_EXTREME)
# If the build directory specifies a source app, make sure it's
# consistent with --source-dir.
apps_mismatched = (source_abs and cached_abs and
pathlib.PurePath(source_abs) != pathlib.PurePath(cached_abs))
self.check_force(
not apps_mismatched or self.auto_pristine,
'Build directory "{}" is for application "{}", but source '
'directory "{}" was specified; please clean it, use --pristine, '
'or use --build-dir to set another build directory'.
format(self.build_dir, cached_abs, source_abs))
if apps_mismatched:
self.run_cmake = True # If they insist, we need to re-run cmake.
# If CACHED_BOARD is not defined, we need some other way to
# find the board.
cached_board = self.cmake_cache.get('CACHED_BOARD')
log.dbg('CACHED_BOARD:', cached_board, level=log.VERBOSE_EXTREME)
# If apps_mismatched and self.auto_pristine are true, we will
# run pristine on the build, invalidating the cached
# board. In that case, we need some way of getting the board.
self.check_force((cached_board and
not (apps_mismatched and self.auto_pristine))
or self.args.board or self.config_board or
os.environ.get('BOARD'),
'Cached board not defined, please provide it '
'(provide --board, set default with '
'"west config build.board <BOARD>", or set '
'BOARD in the environment)')
# Check consistency between cached board and --board.
boards_mismatched = (self.args.board and cached_board and
self.args.board != cached_board)
self.check_force(
not boards_mismatched or self.auto_pristine,
'Build directory {} targets board {}, but board {} was specified. '
'(Clean the directory, use --pristine, or use --build-dir to '
'specify a different one.)'.
format(self.build_dir, cached_board, self.args.board))
if self.auto_pristine and (apps_mismatched or boards_mismatched):
self._run_pristine()
self.cmake_cache = None
log.dbg('run_cmake:', True, level=log.VERBOSE_EXTREME)
self.run_cmake = True
# Tricky corner-case: The user has not specified a build folder but
# there was one in the CMake cache. Since this is going to be
# invalidated, reset to CWD and re-run the basic tests.
if ((boards_mismatched and not apps_mismatched) and
(not source_abs and cached_abs)):
self.source_dir = self._find_source_dir()
self._sanity_check_source_dir()
def _run_cmake(self, board, origin, cmake_opts):
if board is None and config_getboolean('board_warn', True):
log.wrn('This looks like a fresh build and BOARD is unknown;',
"so it probably won't work. To fix, use",
'--board=<your-board>.')
log.inf('Note: to silence the above message, run',
"'west config build.board_warn false'")
if not self.run_cmake:
return
_banner('generating a build system')
if board is not None and origin != 'CMakeCache.txt':
cmake_opts = ['-DBOARD={}'.format(board)]
else:
cmake_opts = []
if self.args.cmake_opts:
cmake_opts.extend(self.args.cmake_opts)
user_args = config_get('cmake-args', None)
if user_args:
cmake_opts.extend(shlex.split(user_args))
# Invoke CMake from the current working directory using the
# -S and -B options (officially introduced in CMake 3.13.0).
# This is important because users expect invocations like this
# to Just Work:
#
# west build -- -DOVERLAY_CONFIG=relative-path.conf
final_cmake_args = ['-DWEST_PYTHON={}'.format(sys.executable),
'-B{}'.format(self.build_dir),
'-S{}'.format(self.source_dir),
'-G{}'.format(config_get('generator',
DEFAULT_CMAKE_GENERATOR))]
if cmake_opts:
final_cmake_args.extend(cmake_opts)
run_cmake(final_cmake_args, dry_run=self.args.dry_run)
def _run_pristine(self):
_banner('making build dir {} pristine'.format(self.build_dir))
if not is_zephyr_build(self.build_dir):
log.die('Refusing to run pristine on a folder that is not a '
'Zephyr build system')
cache = CMakeCache.from_build_dir(self.build_dir)
app_src_dir = cache.get('APPLICATION_SOURCE_DIR')
app_bin_dir = cache.get('APPLICATION_BINARY_DIR')
cmake_args = [f'-DBINARY_DIR={app_bin_dir}',
f'-DSOURCE_DIR={app_src_dir}',
'-P', cache['ZEPHYR_BASE'] + '/cmake/pristine.cmake']
run_cmake(cmake_args, cwd=self.build_dir, dry_run=self.args.dry_run)
def _run_build(self, target):
if target:
_banner('running target {}'.format(target))
elif self.run_cmake:
_banner('building application')
extra_args = ['--target', target] if target else []
if self.args.build_opt:
extra_args.append('--')
extra_args.extend(self.args.build_opt)
if self.args.verbose:
self._append_verbose_args(extra_args,
not bool(self.args.build_opt))
run_build(self.build_dir, extra_args=extra_args,
dry_run=self.args.dry_run)
def _append_verbose_args(self, extra_args, add_dashes):
# These hacks are only needed for CMake versions earlier than
# 3.14. When Zephyr's minimum version is at least that, we can
# drop this nonsense and just run "cmake --build BUILD -v".
self._update_cache()
if not self.cmake_cache:
return
generator = self.cmake_cache.get('CMAKE_GENERATOR')
if not generator:
return
# Substring matching is for things like "Eclipse CDT4 - Ninja".
if 'Ninja' in generator:
if add_dashes:
extra_args.append('--')
extra_args.append('-v')
elif generator == 'Unix Makefiles':
if add_dashes:
extra_args.append('--')
extra_args.append('VERBOSE=1')