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virtualx-engine/SConstruct
ARebel 7e8f7e642e Fix for Vulkan loader related build error caused by incomplete alias 
Fixes #37465. The #37369 commit which added an alias for linuxbsd
platform did not work with the latest branch.
2020-03-31 23:28:30 +08:00

770 lines
30 KiB
Python
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#!/usr/bin/env python
EnsureSConsVersion(3, 0, 0)
EnsurePythonVersion(3, 5)
# System
import glob
import os
import pickle
import sys
# Local
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 = []
for x in sorted(glob.glob("platform/*")):
if not os.path.isdir(x) or not os.path.exists(x + "/detect.py"):
continue
tmppath = "./" + x
sys.path.insert(0, 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 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.disabled_modules = []
env_base.use_ptrcall = False
env_base.module_version_string = ""
env_base.msvc = False
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__.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.__class__.disable_warnings = methods.disable_warnings
env_base["x86_libtheora_opt_gcc"] = False
env_base["x86_libtheora_opt_vc"] = False
# avoid issues when building with different versions of python out of the same directory
env_base.SConsignFile(".sconsign{0}.dblite".format(pickle.HIGHEST_PROTOCOL))
# Build options
customs = ["custom.py"]
profile = ARGUMENTS.get("profile", False)
if profile:
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))
opts.Add(BoolVariable("use_precise_math_checks", "Math checks use very precise epsilon (debug option)", False))
# Components
opts.Add(BoolVariable("deprecated", "Enable deprecated features", True))
opts.Add(BoolVariable("minizip", "Enable ZIP archive support using minizip", True))
opts.Add(BoolVariable("xaudio2", "Enable the XAudio2 audio driver", False))
# Advanced options
opts.Add(BoolVariable("verbose", "Enable verbose output for the compilation", False))
opts.Add(BoolVariable("progress", "Show a progress indicator during compilation", True))
opts.Add(EnumVariable("warnings", "Level of compilation warnings", "all", ("extra", "all", "moderate", "no")))
opts.Add(BoolVariable("werror", "Treat compiler warnings as errors", True))
opts.Add(BoolVariable("dev", "If yes, alias for verbose=yes warnings=extra werror=yes", False))
opts.Add("extra_suffix", "Custom extra suffix added to the base filename of all generated binary files", "")
opts.Add(BoolVariable("vsproj", "Generate a Visual Studio solution", False))
opts.Add(EnumVariable("macports_clang", "Build using Clang from MacPorts", "no", ("no", "5.0", "devel")))
opts.Add(BoolVariable("disable_3d", "Disable 3D nodes for a smaller executable", False))
opts.Add(BoolVariable("disable_advanced_gui", "Disable advanced GUI nodes and behaviors", False))
opts.Add(BoolVariable("no_editor_splash", "Don't use the custom splash screen for the editor", False))
opts.Add("system_certs_path", "Use this path as SSL certificates default for editor (for package maintainers)", "")
# Thirdparty libraries
# opts.Add(BoolVariable('builtin_assimp', "Use the built-in Assimp library", True))
opts.Add(BoolVariable("builtin_bullet", "Use the built-in Bullet library", True))
opts.Add(BoolVariable("builtin_certs", "Use the built-in SSL certificates bundles", 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_glslang", "Use the built-in glslang 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_wslay", "Use the built-in wslay 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_pcre2_with_jit", "Use JIT compiler for the built-in PCRE2 library", True))
opts.Add(BoolVariable("builtin_recast", "Use the built-in Recast library", True))
opts.Add(BoolVariable("builtin_rvo2", "Use the built-in RVO2 library", True))
opts.Add(BoolVariable("builtin_squish", "Use the built-in squish library", True))
opts.Add(BoolVariable("builtin_vulkan", "Use the built-in Vulkan loader library and headers", True))
opts.Add(BoolVariable("builtin_xatlas", "Use the built-in xatlas 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("CFLAGS", "Custom flags for the C compiler")
opts.Add("CXXFLAGS", "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.insert(0, 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.Prepend(CPPPATH=["#"])
# configure ENV for platform
env_base.platform_exporters = platform_exporters
env_base.platform_apis = platform_apis
if env_base["use_precise_math_checks"]:
env_base.Append(CPPDEFINES=["PRECISE_MATH_CHECKS"])
if env_base["target"] == "debug":
env_base.Append(CPPDEFINES=["DEBUG_MEMORY_ALLOC", "DISABLE_FORCED_INLINE"])
# The two options below speed up incremental builds, but reduce the certainty that all files
# will properly be rebuilt. As such, we only enable them for debug (dev) builds, not release.
# 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)
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
else:
# Missing `platform` argument, try to detect platform automatically
if sys.platform.startswith("linux"):
selected_platform = "linuxbsd"
elif sys.platform == "darwin":
selected_platform = "osx"
elif sys.platform == "win32":
selected_platform = "windows"
else:
print("Could not detect platform automatically. Supported platforms:")
for x in platform_list:
print("\t" + x)
print("\nPlease run SCons again and select a valid platform: platform=<string>")
if selected_platform != "":
print("Automatically detected platform: " + selected_platform)
env_base["platform"] = selected_platform
if selected_platform in ["linux", "bsd", "x11"]:
if selected_platform == "x11":
# Deprecated alias kept for compatibility.
print('Platform "x11" has been renamed to "linuxbsd" in Godot 4.0. Building for platform "linuxbsd".')
# Alias for convenience.
selected_platform = "linuxbsd"
env_base["platform"] = selected_platform
if selected_platform in platform_list:
tmppath = "./platform/" + selected_platform
sys.path.insert(0, tmppath)
import detect
if "create" in dir(detect):
env = detect.create(env_base)
else:
env = env_base.Clone()
if env["dev"]:
env["verbose"] = True
env["warnings"] = "extra"
env["werror"] = 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"]
# Environment flags
CCFLAGS = env.get("CCFLAGS", "")
env["CCFLAGS"] = ""
env.Append(CCFLAGS=str(CCFLAGS).split())
CFLAGS = env.get("CFLAGS", "")
env["CFLAGS"] = ""
env.Append(CFLAGS=str(CFLAGS).split())
CXXFLAGS = env.get("CXXFLAGS", "")
env["CXXFLAGS"] = ""
env.Append(CXXFLAGS=str(CXXFLAGS).split())
LINKFLAGS = env.get("LINKFLAGS", "")
env["LINKFLAGS"] = ""
env.Append(LINKFLAGS=str(LINKFLAGS).split())
# Platform specific flags
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 definition, so that they can be used by platform detect
detect.configure(env)
# Set our C and C++ standard requirements.
# C++17 is required as we need guaranteed copy elision as per GH-36436.
# Prepending to make it possible to override.
# This needs to come after `configure`, otherwise we don't have env.msvc.
if not env.msvc:
# Specifying GNU extensions support explicitly, which are supported by
# both GCC and Clang. Both currently default to gnu11 and gnu++14.
env.Prepend(CFLAGS=["-std=gnu11"])
env.Prepend(CXXFLAGS=["-std=gnu++17"])
else:
# MSVC doesn't have clear C standard support, /std only covers C++.
# We apply it to CCFLAGS (both C and C++ code) in case it impacts C features.
env.Prepend(CCFLAGS=["/std:c++17"])
# Enforce our minimal compiler version requirements
cc_version = methods.get_compiler_version(env) or [-1, -1]
cc_version_major = cc_version[0]
cc_version_minor = cc_version[1]
if methods.using_gcc(env):
# GCC 8 before 8.4 has a regression in the support of guaranteed copy elision
# which causes a build failure: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86521
if cc_version_major == 8 and cc_version_minor < 4:
print(
"Detected GCC 8 version < 8.4, which is not supported due to a "
"regression in its C++17 guaranteed copy elision support. Use a "
'newer GCC version, or Clang 6 or later by passing "use_llvm=yes" '
"to the SCons command line."
)
sys.exit(255)
elif cc_version_major < 7:
print(
"Detected GCC version older than 7, which does not fully support "
"C++17. Supported versions are GCC 7, 9 and later. Use a newer GCC "
'version, or Clang 6 or later by passing "use_llvm=yes" to the '
"SCons command line."
)
sys.exit(255)
elif methods.using_clang(env):
# Apple LLVM versions differ from upstream LLVM version \o/, compare
# in https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
if env["platform"] == "osx" or env["platform"] == "iphone":
vanilla = methods.is_vanilla_clang(env)
if vanilla and cc_version_major < 6:
print(
"Detected Clang version older than 6, which does not fully support "
"C++17. Supported versions are Clang 6 and later."
)
sys.exit(255)
elif not vanilla and cc_version_major < 10:
print(
"Detected Apple Clang version older than 10, which does not fully "
"support C++17. Supported versions are Apple Clang 10 and later."
)
sys.exit(255)
elif cc_version_major < 6:
print(
"Detected Clang version older than 6, which does not fully support "
"C++17. Supported versions are Clang 6 and later."
)
sys.exit(255)
# Configure compiler warnings
if env.msvc:
# Truncations, narrowing conversions, signed/unsigned comparisons...
disable_nonessential_warnings = ["/wd4267", "/wd4244", "/wd4305", "/wd4018", "/wd4800"]
if env["warnings"] == "extra":
env.Append(CCFLAGS=["/Wall"]) # Implies /W4
elif env["warnings"] == "all":
env.Append(CCFLAGS=["/W3"] + disable_nonessential_warnings)
elif env["warnings"] == "moderate":
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"])
if env["werror"]:
env.Append(CCFLAGS=["/WX"])
# Force to use Unicode encoding
env.Append(MSVC_FLAGS=["/utf8"])
else: # Rest of the world
shadow_local_warning = []
all_plus_warnings = ["-Wwrite-strings"]
if methods.using_gcc(env):
if cc_version_major >= 7:
shadow_local_warning = ["-Wshadow-local"]
if env["warnings"] == "extra":
env.Append(CCFLAGS=["-Wall", "-Wextra", "-Wno-unused-parameter"] + all_plus_warnings + shadow_local_warning)
env.Append(CXXFLAGS=["-Wctor-dtor-privacy", "-Wnon-virtual-dtor"])
if methods.using_gcc(env):
env.Append(
CCFLAGS=[
"-Walloc-zero",
"-Wduplicated-branches",
"-Wduplicated-cond",
"-Wstringop-overflow=4",
"-Wlogical-op",
]
)
# -Wnoexcept was removed temporarily due to GH-36325.
env.Append(CXXFLAGS=["-Wplacement-new=1"])
if cc_version_major >= 9:
env.Append(CCFLAGS=["-Wattribute-alias=2"])
if methods.using_clang(env):
env.Append(CCFLAGS=["-Wimplicit-fallthrough"])
elif env["warnings"] == "all":
env.Append(CCFLAGS=["-Wall"] + shadow_local_warning)
elif env["warnings"] == "moderate":
env.Append(CCFLAGS=["-Wall", "-Wno-unused"] + shadow_local_warning)
else: # 'no'
env.Append(CCFLAGS=["-w"])
if env["werror"]:
env.Append(CCFLAGS=["-Werror"])
# FIXME: Temporary workaround after the Vulkan merge, remove once warnings are fixed.
if methods.using_gcc(env):
env.Append(CXXFLAGS=["-Wno-error=cpp"])
if cc_version_major == 7: # Bogus warning fixed in 8+.
env.Append(CCFLAGS=["-Wno-error=strict-overflow"])
else:
env.Append(CXXFLAGS=["-Wno-error=#warnings"])
else: # always enable those errors
env.Append(CCFLAGS=["-Werror=return-type"])
if hasattr(detect, "get_program_suffix"):
suffix = "." + detect.get_program_suffix()
else:
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(tmppath)
sys.modules.pop("detect")
env.module_list = []
env.module_icons_paths = []
env.doc_class_path = {}
for x in sorted(module_list):
if not env["module_" + x + "_enabled"]:
continue
tmppath = "./modules/" + x
sys.path.insert(0, tmppath)
env.current_module = x
import config
if config.can_build(env, selected_platform):
config.configure(env)
env.module_list.append(x)
# Get doc classes paths (if present)
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
# Get icon paths (if present)
try:
icons_path = config.get_icons_path()
env.module_icons_paths.append("modules/" + x + "/" + icons_path)
except:
# Default path for module icons
env.module_icons_paths.append("modules/" + x + "/" + "icons")
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, .lib, etc.).
if os.name == "nt":
# On Windows, only static libraries and import libraries can be
# statically linked - both using .lib extension
env["LIBSUFFIXES"] += [env["LIBSUFFIX"]]
else:
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["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"])
editor_module_list = ["regex"]
for x in editor_module_list:
if not env["module_" + x + "_enabled"]:
if env["tools"]:
print(
"Build option 'module_" + x + "_enabled=no' cannot be used with 'tools=yes' (editor), "
"only with 'tools=no' (export template)."
)
sys.exit(255)
if not env["verbose"]:
methods.no_verbose(sys, env)
if not env["platform"] == "server":
env.Append(
BUILDERS={
"GLES2_GLSL": env.Builder(
action=run_in_subprocess(gles_builders.build_gles2_headers), suffix="glsl.gen.h", src_suffix=".glsl"
)
}
)
env.Append(
BUILDERS={
"RD_GLSL": env.Builder(
action=run_in_subprocess(gles_builders.build_rd_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]])
elif selected_platform != "":
if selected_platform == "list":
print("The following platforms are available:\n")
else:
print('Invalid target platform "' + selected_platform + '".')
print("The following platforms were detected:\n")
for x in platform_list:
print("\t" + x)
print("\nPlease run SCons again and select a valid platform: platform=<string>")
if selected_platform == "list":
# Exit early to suppress the rest of the built-in SCons messages
sys.exit(0)
else:
sys.exit(255)
# 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 {} (used: {})\n".format(
self.convert_size(limit), self.convert_size(self.get_size(path))
)
)
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 is 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 recently 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 is 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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