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virtualx-engine/SConstruct
Viktor Ferenczi c5bd0c37ce Running builder (content generator) functions in subprocesses on Windows 
- Refactored all builder (make_*) functions into separate Python modules along to the build tree
- Introduced utility function to wrap all invocations on Windows, but does not change it elsewhere
- Introduced stub to use the builders module as a stand alone script and invoke a selected function

There is a problem with file handles related to writing generated content (*.gen.h and *.gen.cpp)
on Windows, which randomly causes a SHARING VIOLATION error to the compiler resulting in flaky
builds. Running all such content generators in a new subprocess instead of directly inside the
build script works around the issue.

Yes, I tried the multiprocessing module. It did not work due to conflict with SCons on cPickle.
Suggested workaround did not fully work either.

Using the run_in_subprocess wrapper on osx and x11 platforms as well for consistency. In case of
running a cross-compilation on Windows they would still be used, but likely it will not happen
in practice. What counts is that the build itself is running on which platform, not the target
platform.

Some generated files are written directly in an SConstruct or SCsub file, before the parallel build starts. They don't need to be written in a subprocess, apparently, so I left them as is.
2018-07-27 21:37:55 +02:00

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#!/usr/bin/env python
EnsureSConsVersion(0, 98, 1)
import string
import os
import os.path
import glob
import sys
import methods
import gles_builders
from platform_methods import run_in_subprocess
# scan possible build platforms
platform_list = [] # list of platforms
platform_opts = {} # options for each platform
platform_flags = {} # flags for each platform
active_platforms = []
active_platform_ids = []
platform_exporters = []
platform_apis = []
global_defaults = []
for x in glob.glob("platform/*"):
if (not os.path.isdir(x) or not os.path.exists(x + "/detect.py")):
continue
tmppath = "./" + x
sys.path.append(tmppath)
import detect
if (os.path.exists(x + "/export/export.cpp")):
platform_exporters.append(x[9:])
if (os.path.exists(x + "/api/api.cpp")):
platform_apis.append(x[9:])
if (os.path.exists(x + "/globals/global_defaults.cpp")):
global_defaults.append(x[9:])
if (detect.is_active()):
active_platforms.append(detect.get_name())
active_platform_ids.append(x)
if (detect.can_build()):
x = x.replace("platform/", "") # rest of world
x = x.replace("platform\\", "") # win32
platform_list += [x]
platform_opts[x] = detect.get_opts()
platform_flags[x] = detect.get_flags()
sys.path.remove(tmppath)
sys.modules.pop('detect')
module_list = methods.detect_modules()
methods.save_active_platforms(active_platforms, active_platform_ids)
custom_tools = ['default']
platform_arg = ARGUMENTS.get("platform", ARGUMENTS.get("p", False))
if os.name == "nt" and (platform_arg == "android" or ARGUMENTS.get("use_mingw", False)):
custom_tools = ['mingw']
elif platform_arg == 'javascript':
# Use generic POSIX build toolchain for Emscripten.
custom_tools = ['cc', 'c++', 'ar', 'link', 'textfile', 'zip']
env_base = Environment(tools=custom_tools)
if 'TERM' in os.environ:
env_base['ENV']['TERM'] = os.environ['TERM']
env_base.AppendENVPath('PATH', os.getenv('PATH'))
env_base.AppendENVPath('PKG_CONFIG_PATH', os.getenv('PKG_CONFIG_PATH'))
env_base.global_defaults = global_defaults
env_base.android_maven_repos = []
env_base.android_flat_dirs = []
env_base.android_dependencies = []
env_base.android_gradle_plugins = []
env_base.android_gradle_classpath = []
env_base.android_java_dirs = []
env_base.android_res_dirs = []
env_base.android_asset_dirs = []
env_base.android_aidl_dirs = []
env_base.android_jni_dirs = []
env_base.android_default_config = []
env_base.android_manifest_chunk = ""
env_base.android_permission_chunk = ""
env_base.android_appattributes_chunk = ""
env_base.disabled_modules = []
env_base.use_ptrcall = False
env_base.split_drivers = False
env_base.split_modules = False
env_base.module_version_string = ""
env_base.msvc = False
# To decide whether to rebuild a file, use the MD5 sum only if the timestamp has changed.
# http://scons.org/doc/production/HTML/scons-user/ch06.html#idm139837621851792
env_base.Decider('MD5-timestamp')
# Use cached implicit dependencies by default. Can be overridden by specifying `--implicit-deps-changed` in the command line.
# http://scons.org/doc/production/HTML/scons-user/ch06s04.html
env_base.SetOption('implicit_cache', 1)
env_base.__class__.android_add_maven_repository = methods.android_add_maven_repository
env_base.__class__.android_add_flat_dir = methods.android_add_flat_dir
env_base.__class__.android_add_dependency = methods.android_add_dependency
env_base.__class__.android_add_java_dir = methods.android_add_java_dir
env_base.__class__.android_add_res_dir = methods.android_add_res_dir
env_base.__class__.android_add_asset_dir = methods.android_add_asset_dir
env_base.__class__.android_add_aidl_dir = methods.android_add_aidl_dir
env_base.__class__.android_add_jni_dir = methods.android_add_jni_dir
env_base.__class__.android_add_default_config = methods.android_add_default_config
env_base.__class__.android_add_to_manifest = methods.android_add_to_manifest
env_base.__class__.android_add_to_permissions = methods.android_add_to_permissions
env_base.__class__.android_add_to_attributes = methods.android_add_to_attributes
env_base.__class__.android_add_gradle_plugin = methods.android_add_gradle_plugin
env_base.__class__.android_add_gradle_classpath = methods.android_add_gradle_classpath
env_base.__class__.disable_module = methods.disable_module
env_base.__class__.add_module_version_string = methods.add_module_version_string
env_base.__class__.add_source_files = methods.add_source_files
env_base.__class__.use_windows_spawn_fix = methods.use_windows_spawn_fix
env_base.__class__.split_lib = methods.split_lib
env_base.__class__.add_shared_library = methods.add_shared_library
env_base.__class__.add_library = methods.add_library
env_base.__class__.add_program = methods.add_program
env_base.__class__.CommandNoCache = methods.CommandNoCache
env_base["x86_libtheora_opt_gcc"] = False
env_base["x86_libtheora_opt_vc"] = False
# Build options
customs = ['custom.py']
profile = ARGUMENTS.get("profile", False)
if profile:
import os.path
if os.path.isfile(profile):
customs.append(profile)
elif os.path.isfile(profile + ".py"):
customs.append(profile + ".py")
opts = Variables(customs, ARGUMENTS)
# Target build options
opts.Add('arch', "Platform-dependent architecture (arm/arm64/x86/x64/mips/...)", '')
opts.Add(EnumVariable('bits', "Target platform bits", 'default', ('default', '32', '64')))
opts.Add('p', "Platform (alias for 'platform')", '')
opts.Add('platform', "Target platform (%s)" % ('|'.join(platform_list), ), '')
opts.Add(EnumVariable('target', "Compilation target", 'debug', ('debug', 'release_debug', 'release')))
opts.Add(EnumVariable('optimize', "Optimization type", 'speed', ('speed', 'size')))
opts.Add(BoolVariable('tools', "Build the tools (a.k.a. the Godot editor)", True))
opts.Add(BoolVariable('use_lto', 'Use link-time optimization', False))
# Components
opts.Add(BoolVariable('deprecated', "Enable deprecated features", True))
opts.Add(BoolVariable('gdscript', "Enable GDScript support", True))
opts.Add(BoolVariable('minizip', "Enable ZIP archive support using minizip", True))
opts.Add(BoolVariable('xaudio2', "Enable the XAudio2 audio driver", False))
opts.Add(BoolVariable('xml', "Enable XML format support for resources", True))
# Advanced options
opts.Add(BoolVariable('disable_3d', "Disable 3D nodes for a smaller executable", False))
opts.Add(BoolVariable('disable_advanced_gui', "Disable advanced 3D GUI nodes and behaviors", False))
opts.Add('extra_suffix', "Custom extra suffix added to the base filename of all generated binary files", '')
opts.Add(BoolVariable('verbose', "Enable verbose output for the compilation", False))
opts.Add(BoolVariable('vsproj', "Generate a Visual Studio solution", False))
opts.Add(EnumVariable('warnings', "Set the level of warnings emitted during compilation", 'no', ('extra', 'all', 'moderate', 'no')))
opts.Add(BoolVariable('progress', "Show a progress indicator during compilation", True))
opts.Add(BoolVariable('dev', "If yes, alias for verbose=yes warnings=all", False))
opts.Add(EnumVariable('macports_clang', "Build using Clang from MacPorts", 'no', ('no', '5.0', 'devel')))
opts.Add(BoolVariable('no_editor_splash', "Don't use the custom splash screen for the editor", False))
# Thirdparty libraries
opts.Add(BoolVariable('builtin_bullet', "Use the built-in Bullet library", True))
opts.Add(BoolVariable('builtin_enet', "Use the built-in ENet library", True))
opts.Add(BoolVariable('builtin_freetype', "Use the built-in FreeType library", True))
opts.Add(BoolVariable('builtin_libogg', "Use the built-in libogg library", True))
opts.Add(BoolVariable('builtin_libpng', "Use the built-in libpng library", True))
opts.Add(BoolVariable('builtin_libtheora', "Use the built-in libtheora library", True))
opts.Add(BoolVariable('builtin_libvorbis', "Use the built-in libvorbis library", True))
opts.Add(BoolVariable('builtin_libvpx', "Use the built-in libvpx library", True))
opts.Add(BoolVariable('builtin_libwebp', "Use the built-in libwebp library", True))
opts.Add(BoolVariable('builtin_libwebsockets', "Use the built-in libwebsockets library", True))
opts.Add(BoolVariable('builtin_mbedtls', "Use the built-in mbedTLS library", True))
opts.Add(BoolVariable('builtin_miniupnpc', "Use the built-in miniupnpc library", True))
opts.Add(BoolVariable('builtin_opus', "Use the built-in Opus library", True))
opts.Add(BoolVariable('builtin_pcre2', "Use the built-in PCRE2 library)", True))
opts.Add(BoolVariable('builtin_recast', "Use the built-in Recast library", True))
opts.Add(BoolVariable('builtin_squish', "Use the built-in squish library", True))
opts.Add(BoolVariable('builtin_thekla_atlas', "Use the built-in thekla_altas library", True))
opts.Add(BoolVariable('builtin_zlib', "Use the built-in zlib library", True))
opts.Add(BoolVariable('builtin_zstd', "Use the built-in Zstd library", True))
# Compilation environment setup
opts.Add("CXX", "C++ compiler")
opts.Add("CC", "C compiler")
opts.Add("LINK", "Linker")
opts.Add("CCFLAGS", "Custom flags for both the C and C++ compilers")
opts.Add("CXXFLAGS", "Custom flags for the C++ compiler")
opts.Add("CFLAGS", "Custom flags for the C compiler")
opts.Add("LINKFLAGS", "Custom flags for the linker")
# add platform specific options
for k in platform_opts.keys():
opt_list = platform_opts[k]
for o in opt_list:
opts.Add(o)
for x in module_list:
module_enabled = True
tmppath = "./modules/" + x
sys.path.append(tmppath)
import config
enabled_attr = getattr(config, "is_enabled", None)
if (callable(enabled_attr) and not config.is_enabled()):
module_enabled = False
sys.path.remove(tmppath)
sys.modules.pop('config')
opts.Add(BoolVariable('module_' + x + '_enabled', "Enable module '%s'" % (x, ), module_enabled))
opts.Update(env_base) # update environment
Help(opts.GenerateHelpText(env_base)) # generate help
# add default include paths
env_base.Append(CPPPATH=['#core', '#core/math', '#editor', '#drivers', '#'])
# configure ENV for platform
env_base.platform_exporters = platform_exporters
env_base.platform_apis = platform_apis
if (env_base['target'] == 'debug'):
env_base.Append(CPPDEFINES=['DEBUG_MEMORY_ALLOC', 'SCI_NAMESPACE'])
if (env_base['no_editor_splash']):
env_base.Append(CPPDEFINES=['NO_EDITOR_SPLASH'])
if not env_base['deprecated']:
env_base.Append(CPPDEFINES=['DISABLE_DEPRECATED'])
env_base.platforms = {}
selected_platform = ""
if env_base['platform'] != "":
selected_platform = env_base['platform']
elif env_base['p'] != "":
selected_platform = env_base['p']
env_base["platform"] = selected_platform
if selected_platform in platform_list:
sys.path.append("./platform/" + selected_platform)
import detect
if "create" in dir(detect):
env = detect.create(env_base)
else:
env = env_base.Clone()
if env['dev']:
env["warnings"] = "all"
env['verbose'] = True
if env['vsproj']:
env.vs_incs = []
env.vs_srcs = []
def AddToVSProject(sources):
for x in sources:
if type(x) == type(""):
fname = env.File(x).path
else:
fname = env.File(x)[0].path
pieces = fname.split(".")
if len(pieces) > 0:
basename = pieces[0]
basename = basename.replace('\\\\', '/')
if os.path.isfile(basename + ".h"):
env.vs_incs = env.vs_incs + [basename + ".h"]
elif os.path.isfile(basename + ".hpp"):
env.vs_incs = env.vs_incs + [basename + ".hpp"]
if os.path.isfile(basename + ".c"):
env.vs_srcs = env.vs_srcs + [basename + ".c"]
elif os.path.isfile(basename + ".cpp"):
env.vs_srcs = env.vs_srcs + [basename + ".cpp"]
env.AddToVSProject = AddToVSProject
env.extra_suffix = ""
if env["extra_suffix"] != '':
env.extra_suffix += '.' + env["extra_suffix"]
CCFLAGS = env.get('CCFLAGS', '')
env['CCFLAGS'] = ''
env.Append(CCFLAGS=str(CCFLAGS).split())
CFLAGS = env.get('CFLAGS', '')
env['CFLAGS'] = ''
env.Append(CFLAGS=str(CFLAGS).split())
LINKFLAGS = env.get('LINKFLAGS', '')
env['LINKFLAGS'] = ''
env.Append(LINKFLAGS=str(LINKFLAGS).split())
flag_list = platform_flags[selected_platform]
for f in flag_list:
if not (f[0] in ARGUMENTS): # allow command line to override platform flags
env[f[0]] = f[1]
# must happen after the flags, so when flags are used by configure, stuff happens (ie, ssl on x11)
detect.configure(env)
if (env["warnings"] == 'yes'):
print("WARNING: warnings=yes is deprecated; assuming warnings=all")
if env.msvc:
disable_nonessential_warnings = ['/wd4267', '/wd4244', '/wd4305', '/wd4800'] # Truncations, narrowing conversions...
if (env["warnings"] == 'extra'):
env.Append(CCFLAGS=['/Wall']) # Implies /W4
elif (env["warnings"] == 'all' or env["warnings"] == 'yes'):
env.Append(CCFLAGS=['/W3'] + disable_nonessential_warnings)
elif (env["warnings"] == 'moderate'):
# C4244 shouldn't be needed here being a level-3 warning, but it is
env.Append(CCFLAGS=['/W2'] + disable_nonessential_warnings)
else: # 'no'
env.Append(CCFLAGS=['/w'])
# Set exception handling model to avoid warnings caused by Windows system headers.
env.Append(CCFLAGS=['/EHsc'])
else: # Rest of the world
if (env["warnings"] == 'extra'):
env.Append(CCFLAGS=['-Wall', '-Wextra'])
elif (env["warnings"] == 'all' or env["warnings"] == 'yes'):
env.Append(CCFLAGS=['-Wall'])
elif (env["warnings"] == 'moderate'):
env.Append(CCFLAGS=['-Wall', '-Wno-unused'])
else: # 'no'
env.Append(CCFLAGS=['-w'])
env.Append(CCFLAGS=['-Werror=return-type'])
suffix = "." + selected_platform
if (env["target"] == "release"):
if env["tools"]:
print("Tools can only be built with targets 'debug' and 'release_debug'.")
sys.exit(255)
suffix += ".opt"
env.Append(CPPDEFINES=['NDEBUG'])
elif (env["target"] == "release_debug"):
if env["tools"]:
suffix += ".opt.tools"
else:
suffix += ".opt.debug"
else:
if env["tools"]:
suffix += ".tools"
else:
suffix += ".debug"
if env["arch"] != "":
suffix += "." + env["arch"]
elif (env["bits"] == "32"):
suffix += ".32"
elif (env["bits"] == "64"):
suffix += ".64"
suffix += env.extra_suffix
sys.path.remove("./platform/" + selected_platform)
sys.modules.pop('detect')
env.module_list = []
env.doc_class_path = {}
for x in module_list:
if not env['module_' + x + '_enabled']:
continue
tmppath = "./modules/" + x
sys.path.append(tmppath)
env.current_module = x
import config
# can_build changed number of arguments between 3.0 (1) and 3.1 (2),
# so try both to preserve compatibility for 3.0 modules
can_build = False
try:
can_build = config.can_build(env, selected_platform)
except TypeError:
print("Warning: module '%s' uses a deprecated `can_build` "
"signature in its config.py file, it should be "
"`can_build(env, platform)`." % x)
can_build = config.can_build(selected_platform)
if (can_build):
config.configure(env)
env.module_list.append(x)
try:
doc_classes = config.get_doc_classes()
doc_path = config.get_doc_path()
for c in doc_classes:
env.doc_class_path[c] = "modules/" + x + "/" + doc_path
except:
pass
sys.path.remove(tmppath)
sys.modules.pop('config')
methods.update_version(env.module_version_string)
env["PROGSUFFIX"] = suffix + env.module_version_string + env["PROGSUFFIX"]
env["OBJSUFFIX"] = suffix + env["OBJSUFFIX"]
# (SH)LIBSUFFIX will be used for our own built libraries
# LIBSUFFIXES contains LIBSUFFIX and SHLIBSUFFIX by default,
# so we need to append the default suffixes to keep the ability
# to link against thirdparty libraries (.a, .so, .dll, etc.).
env["LIBSUFFIXES"] += [env["LIBSUFFIX"], env["SHLIBSUFFIX"]]
env["LIBSUFFIX"] = suffix + env["LIBSUFFIX"]
env["SHLIBSUFFIX"] = suffix + env["SHLIBSUFFIX"]
if (env.use_ptrcall):
env.Append(CPPDEFINES=['PTRCALL_ENABLED'])
if env['tools']:
env.Append(CPPDEFINES=['TOOLS_ENABLED'])
if env['disable_3d']:
if env['tools']:
print("Build option 'disable_3d=yes' cannot be used with 'tools=yes' (editor), only with 'tools=no' (export template).")
sys.exit(255)
else:
env.Append(CPPDEFINES=['_3D_DISABLED'])
if env['gdscript']:
env.Append(CPPDEFINES=['GDSCRIPT_ENABLED'])
if env['disable_advanced_gui']:
if env['tools']:
print("Build option 'disable_advanced_gui=yes' cannot be used with 'tools=yes' (editor), only with 'tools=no' (export template).")
sys.exit(255)
else:
env.Append(CPPDEFINES=['ADVANCED_GUI_DISABLED'])
if env['minizip']:
env.Append(CPPDEFINES=['MINIZIP_ENABLED'])
if env['xml']:
env.Append(CPPDEFINES=['XML_ENABLED'])
if not env['verbose']:
methods.no_verbose(sys, env)
if (not env["platform"] == "server"): # FIXME: detect GLES3
env.Append(BUILDERS = { 'GLES3_GLSL' : env.Builder(action=run_in_subprocess(gles_builders.build_gles3_headers), suffix='glsl.gen.h', src_suffix='.glsl')})
env.Append(BUILDERS = { 'GLES2_GLSL' : env.Builder(action=run_in_subprocess(gles_builders.build_gles2_headers), suffix='glsl.gen.h', src_suffix='.glsl')})
scons_cache_path = os.environ.get("SCONS_CACHE")
if scons_cache_path != None:
CacheDir(scons_cache_path)
print("Scons cache enabled... (path: '" + scons_cache_path + "')")
Export('env')
# build subdirs, the build order is dependent on link order.
SConscript("core/SCsub")
SConscript("servers/SCsub")
SConscript("scene/SCsub")
SConscript("editor/SCsub")
SConscript("drivers/SCsub")
SConscript("platform/SCsub")
SConscript("modules/SCsub")
SConscript("main/SCsub")
SConscript("platform/" + selected_platform + "/SCsub") # build selected platform
# Microsoft Visual Studio Project Generation
if env['vsproj']:
env['CPPPATH'] = [Dir(path) for path in env['CPPPATH']]
methods.generate_vs_project(env, GetOption("num_jobs"))
methods.generate_cpp_hint_file("cpp.hint")
# Check for the existence of headers
conf = Configure(env)
if ("check_c_headers" in env):
for header in env["check_c_headers"]:
if (conf.CheckCHeader(header[0])):
env.AppendUnique(CPPDEFINES=[header[1]])
else:
print("No valid target platform selected.")
print("The following platforms were detected:")
for x in platform_list:
print("\t" + x)
print("\nPlease run SCons again with the argument: platform=<string>")
# The following only makes sense when the env is defined, and assumes it is
if 'env' in locals():
screen = sys.stdout
# Progress reporting is not available in non-TTY environments since it
# messes with the output (for example, when writing to a file)
show_progress = (env['progress'] and sys.stdout.isatty())
node_count = 0
node_count_max = 0
node_count_interval = 1
node_count_fname = str(env.Dir('#')) + '/.scons_node_count'
import time, math
class cache_progress:
# The default is 1 GB cache and 12 hours half life
def __init__(self, path = None, limit = 1073741824, half_life = 43200):
self.path = path
self.limit = limit
self.exponent_scale = math.log(2) / half_life
if env['verbose'] and path != None:
screen.write('Current cache limit is ' + self.convert_size(limit) + ' (used: ' + self.convert_size(self.get_size(path)) + ')\n')
self.delete(self.file_list())
def __call__(self, node, *args, **kw):
global node_count, node_count_max, node_count_interval, node_count_fname, show_progress
if show_progress:
# Print the progress percentage
node_count += node_count_interval
if (node_count_max > 0 and node_count <= node_count_max):
screen.write('\r[%3d%%] ' % (node_count * 100 / node_count_max))
screen.flush()
elif (node_count_max > 0 and node_count > node_count_max):
screen.write('\r[100%] ')
screen.flush()
else:
screen.write('\r[Initial build] ')
screen.flush()
def delete(self, files):
if len(files) == 0:
return
if env['verbose']:
# Utter something
screen.write('\rPurging %d %s from cache...\n' % (len(files), len(files) > 1 and 'files' or 'file'))
[os.remove(f) for f in files]
def file_list(self):
if self.path == None:
# Nothing to do
return []
# Gather a list of (filename, (size, atime)) within the
# cache directory
file_stat = [(x, os.stat(x)[6:8]) for x in glob.glob(os.path.join(self.path, '*', '*'))]
if file_stat == []:
# Nothing to do
return []
# Weight the cache files by size (assumed to be roughly
# proportional to the recompilation time) times an exponential
# decay since the ctime, and return a list with the entries
# (filename, size, weight).
current_time = time.time()
file_stat = [(x[0], x[1][0], (current_time - x[1][1])) for x in file_stat]
# Sort by the most resently accessed files (most sensible to keep) first
file_stat.sort(key=lambda x: x[2])
# Search for the first entry where the storage limit is
# reached
sum, mark = 0, None
for i,x in enumerate(file_stat):
sum += x[1]
if sum > self.limit:
mark = i
break
if mark == None:
return []
else:
return [x[0] for x in file_stat[mark:]]
def convert_size(self, size_bytes):
if size_bytes == 0:
return "0 bytes"
size_name = ("bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
i = int(math.floor(math.log(size_bytes, 1024)))
p = math.pow(1024, i)
s = round(size_bytes / p, 2)
return "%s %s" % (int(s) if i == 0 else s, size_name[i])
def get_size(self, start_path = '.'):
total_size = 0
for dirpath, dirnames, filenames in os.walk(start_path):
for f in filenames:
fp = os.path.join(dirpath, f)
total_size += os.path.getsize(fp)
return total_size
def progress_finish(target, source, env):
global node_count, progressor
with open(node_count_fname, 'w') as f:
f.write('%d\n' % node_count)
progressor.delete(progressor.file_list())
try:
with open(node_count_fname) as f:
node_count_max = int(f.readline())
except:
pass
cache_directory = os.environ.get("SCONS_CACHE")
# Simple cache pruning, attached to SCons' progress callback. Trim the
# cache directory to a size not larger than cache_limit.
cache_limit = float(os.getenv("SCONS_CACHE_LIMIT", 1024)) * 1024 * 1024
progressor = cache_progress(cache_directory, cache_limit)
Progress(progressor, interval = node_count_interval)
progress_finish_command = Command('progress_finish', [], progress_finish)
AlwaysBuild(progress_finish_command)
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