c2c659db32
Adds support for LTO on macOS and Android. We don't have much experience with LTO on these platforms so for now we keep it disabled by default even when `production=yes` is set. Similarly for iOS where we ship object files for the user to link in Xcode so LTO makes builds extremely slow to link. `production=yes` defaults to full LTO. ThinLTO is much faster for LLVM-based compilers but seems to produce bigger binaries (at least for the Web platform).
418 lines
16 KiB
Python
418 lines
16 KiB
Python
import os
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import platform
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import sys
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from methods import get_compiler_version, using_gcc
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from platform_methods import detect_arch
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def is_active():
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return True
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def get_name():
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return "LinuxBSD"
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def can_build():
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if os.name != "posix" or sys.platform == "darwin":
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return False
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pkgconf_error = os.system("pkg-config --version > /dev/null")
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if pkgconf_error:
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print("Error: pkg-config not found. Aborting.")
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return False
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return True
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def get_opts():
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from SCons.Variables import BoolVariable, EnumVariable
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return [
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EnumVariable("linker", "Linker program", "default", ("default", "bfd", "gold", "lld", "mold")),
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BoolVariable("use_llvm", "Use the LLVM compiler", False),
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BoolVariable("use_static_cpp", "Link libgcc and libstdc++ statically for better portability", True),
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BoolVariable("use_coverage", "Test Godot coverage", False),
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BoolVariable("use_ubsan", "Use LLVM/GCC compiler undefined behavior sanitizer (UBSAN)", False),
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BoolVariable("use_asan", "Use LLVM/GCC compiler address sanitizer (ASAN)", False),
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BoolVariable("use_lsan", "Use LLVM/GCC compiler leak sanitizer (LSAN)", False),
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BoolVariable("use_tsan", "Use LLVM/GCC compiler thread sanitizer (TSAN)", False),
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BoolVariable("use_msan", "Use LLVM compiler memory sanitizer (MSAN)", False),
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BoolVariable("pulseaudio", "Detect and use PulseAudio", True),
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BoolVariable("dbus", "Detect and use D-Bus to handle screensaver and portal desktop settings", True),
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BoolVariable("speechd", "Detect and use Speech Dispatcher for Text-to-Speech support", True),
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BoolVariable("fontconfig", "Detect and use fontconfig for system fonts support", True),
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BoolVariable("udev", "Use udev for gamepad connection callbacks", True),
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BoolVariable("x11", "Enable X11 display", True),
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BoolVariable("debug_symbols", "Add debugging symbols to release/release_debug builds", True),
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BoolVariable("separate_debug_symbols", "Create a separate file containing debugging symbols", False),
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BoolVariable("touch", "Enable touch events", True),
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BoolVariable("execinfo", "Use libexecinfo on systems where glibc is not available", False),
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]
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def get_flags():
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return [
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("arch", detect_arch()),
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]
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def configure(env):
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# Validate arch.
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supported_arches = ["x86_32", "x86_64", "arm32", "arm64", "rv64", "ppc32", "ppc64"]
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if env["arch"] not in supported_arches:
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print(
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'Unsupported CPU architecture "%s" for Linux / *BSD. Supported architectures are: %s.'
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% (env["arch"], ", ".join(supported_arches))
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)
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sys.exit()
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## Build type
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if env["target"] == "release":
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if env["optimize"] == "speed": # optimize for speed (default)
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env.Prepend(CCFLAGS=["-O3"])
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elif env["optimize"] == "size": # optimize for size
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env.Prepend(CCFLAGS=["-Os"])
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if env["debug_symbols"]:
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env.Prepend(CCFLAGS=["-g2"])
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elif env["target"] == "release_debug":
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if env["optimize"] == "speed": # optimize for speed (default)
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env.Prepend(CCFLAGS=["-O2"])
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elif env["optimize"] == "size": # optimize for size
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env.Prepend(CCFLAGS=["-Os"])
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if env["debug_symbols"]:
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env.Prepend(CCFLAGS=["-g2"])
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elif env["target"] == "debug":
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env.Prepend(CCFLAGS=["-g3"])
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env.Append(LINKFLAGS=["-rdynamic"])
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# CPU architecture flags.
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if env["arch"] == "rv64":
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# G = General-purpose extensions, C = Compression extension (very common).
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env.Append(CCFLAGS=["-march=rv64gc"])
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## Compiler configuration
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if "CXX" in env and "clang" in os.path.basename(env["CXX"]):
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# Convenience check to enforce the use_llvm overrides when CXX is clang(++)
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env["use_llvm"] = True
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if env["use_llvm"]:
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if "clang++" not in os.path.basename(env["CXX"]):
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env["CC"] = "clang"
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env["CXX"] = "clang++"
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env.extra_suffix = ".llvm" + env.extra_suffix
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if env["linker"] != "default":
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print("Using linker program: " + env["linker"])
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if env["linker"] == "mold" and using_gcc(env): # GCC < 12.1 doesn't support -fuse-ld=mold.
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cc_version = get_compiler_version(env)
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cc_semver = (int(cc_version["major"]), int(cc_version["minor"]))
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if cc_semver < (12, 1):
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found_wrapper = False
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for path in ["/usr/libexec", "/usr/local/libexec", "/usr/lib", "/usr/local/lib"]:
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if os.path.isfile(path + "/mold/ld"):
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env.Append(LINKFLAGS=["-B" + path + "/mold"])
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found_wrapper = True
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break
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if not found_wrapper:
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print("Couldn't locate mold installation path. Make sure it's installed in /usr or /usr/local.")
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sys.exit(255)
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else:
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env.Append(LINKFLAGS=["-fuse-ld=mold"])
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else:
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env.Append(LINKFLAGS=["-fuse-ld=%s" % env["linker"]])
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if env["use_coverage"]:
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env.Append(CCFLAGS=["-ftest-coverage", "-fprofile-arcs"])
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env.Append(LINKFLAGS=["-ftest-coverage", "-fprofile-arcs"])
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if env["use_ubsan"] or env["use_asan"] or env["use_lsan"] or env["use_tsan"] or env["use_msan"]:
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env.extra_suffix += ".san"
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env.Append(CCFLAGS=["-DSANITIZERS_ENABLED"])
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if env["use_ubsan"]:
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env.Append(
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CCFLAGS=[
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"-fsanitize=undefined,shift,shift-exponent,integer-divide-by-zero,unreachable,vla-bound,null,return,signed-integer-overflow,bounds,float-divide-by-zero,float-cast-overflow,nonnull-attribute,returns-nonnull-attribute,bool,enum,vptr,pointer-overflow,builtin"
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]
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)
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env.Append(LINKFLAGS=["-fsanitize=undefined"])
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if env["use_llvm"]:
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env.Append(
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CCFLAGS=[
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"-fsanitize=nullability-return,nullability-arg,function,nullability-assign,implicit-integer-sign-change"
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]
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)
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else:
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env.Append(CCFLAGS=["-fsanitize=bounds-strict"])
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if env["use_asan"]:
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env.Append(CCFLAGS=["-fsanitize=address,pointer-subtract,pointer-compare"])
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env.Append(LINKFLAGS=["-fsanitize=address"])
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if env["use_lsan"]:
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env.Append(CCFLAGS=["-fsanitize=leak"])
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env.Append(LINKFLAGS=["-fsanitize=leak"])
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if env["use_tsan"]:
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env.Append(CCFLAGS=["-fsanitize=thread"])
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env.Append(LINKFLAGS=["-fsanitize=thread"])
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if env["use_msan"] and env["use_llvm"]:
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env.Append(CCFLAGS=["-fsanitize=memory"])
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env.Append(CCFLAGS=["-fsanitize-memory-track-origins"])
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env.Append(CCFLAGS=["-fsanitize-recover=memory"])
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env.Append(LINKFLAGS=["-fsanitize=memory"])
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# LTO
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if env["lto"] != "none":
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if env["lto"] == "thin":
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if not env["use_llvm"]:
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print("ThinLTO is only compatible with LLVM, use `use_llvm=yes` or `lto=full`.")
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sys.exit(255)
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env.Append(CCFLAGS=["-flto=thin"])
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env.Append(LINKFLAGS=["-flto=thin"])
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elif not env["use_llvm"] and env.GetOption("num_jobs") > 1:
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env.Append(CCFLAGS=["-flto"])
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env.Append(LINKFLAGS=["-flto=" + str(env.GetOption("num_jobs"))])
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else:
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env.Append(CCFLAGS=["-flto"])
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env.Append(LINKFLAGS=["-flto"])
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if not env["use_llvm"]:
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env["RANLIB"] = "gcc-ranlib"
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env["AR"] = "gcc-ar"
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env.Append(CCFLAGS=["-pipe"])
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## Dependencies
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if env["x11"]:
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env.ParseConfig("pkg-config x11 --cflags --libs")
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env.ParseConfig("pkg-config xcursor --cflags --libs")
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env.ParseConfig("pkg-config xinerama --cflags --libs")
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env.ParseConfig("pkg-config xext --cflags --libs")
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env.ParseConfig("pkg-config xrandr --cflags --libs")
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env.ParseConfig("pkg-config xrender --cflags --libs")
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env.ParseConfig("pkg-config xi --cflags --libs")
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if env["touch"]:
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env.Append(CPPDEFINES=["TOUCH_ENABLED"])
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# FIXME: Check for existence of the libs before parsing their flags with pkg-config
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# freetype depends on libpng and zlib, so bundling one of them while keeping others
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# as shared libraries leads to weird issues
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if (
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env["builtin_freetype"]
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or env["builtin_libpng"]
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or env["builtin_zlib"]
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or env["builtin_graphite"]
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or env["builtin_harfbuzz"]
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):
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env["builtin_freetype"] = True
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env["builtin_libpng"] = True
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env["builtin_zlib"] = True
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env["builtin_graphite"] = True
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env["builtin_harfbuzz"] = True
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if not env["builtin_freetype"]:
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env.ParseConfig("pkg-config freetype2 --cflags --libs")
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if not env["builtin_graphite"]:
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env.ParseConfig("pkg-config graphite2 --cflags --libs")
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if not env["builtin_icu"]:
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env.ParseConfig("pkg-config icu-uc --cflags --libs")
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if not env["builtin_harfbuzz"]:
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env.ParseConfig("pkg-config harfbuzz harfbuzz-icu --cflags --libs")
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if not env["builtin_libpng"]:
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env.ParseConfig("pkg-config libpng16 --cflags --libs")
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if not env["builtin_enet"]:
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env.ParseConfig("pkg-config libenet --cflags --libs")
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if not env["builtin_squish"]:
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env.ParseConfig("pkg-config libsquish --cflags --libs")
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if not env["builtin_zstd"]:
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env.ParseConfig("pkg-config libzstd --cflags --libs")
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# Sound and video libraries
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# Keep the order as it triggers chained dependencies (ogg needed by others, etc.)
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if not env["builtin_libtheora"]:
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env["builtin_libogg"] = False # Needed to link against system libtheora
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env["builtin_libvorbis"] = False # Needed to link against system libtheora
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env.ParseConfig("pkg-config theora theoradec --cflags --libs")
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else:
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if env["arch"] in ["x86_64", "x86_32"]:
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env["x86_libtheora_opt_gcc"] = True
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if not env["builtin_libvorbis"]:
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env["builtin_libogg"] = False # Needed to link against system libvorbis
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env.ParseConfig("pkg-config vorbis vorbisfile --cflags --libs")
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if not env["builtin_libogg"]:
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env.ParseConfig("pkg-config ogg --cflags --libs")
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if not env["builtin_libwebp"]:
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env.ParseConfig("pkg-config libwebp --cflags --libs")
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if not env["builtin_mbedtls"]:
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# mbedTLS does not provide a pkgconfig config yet. See https://github.com/ARMmbed/mbedtls/issues/228
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env.Append(LIBS=["mbedtls", "mbedcrypto", "mbedx509"])
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if not env["builtin_wslay"]:
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env.ParseConfig("pkg-config libwslay --cflags --libs")
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if not env["builtin_miniupnpc"]:
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# No pkgconfig file so far, hardcode default paths.
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env.Prepend(CPPPATH=["/usr/include/miniupnpc"])
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env.Append(LIBS=["miniupnpc"])
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# On Linux wchar_t should be 32-bits
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# 16-bit library shouldn't be required due to compiler optimisations
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if not env["builtin_pcre2"]:
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env.ParseConfig("pkg-config libpcre2-32 --cflags --libs")
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if not env["builtin_embree"]:
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# No pkgconfig file so far, hardcode expected lib name.
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env.Append(LIBS=["embree3"])
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## Flags
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if env["fontconfig"]:
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if os.system("pkg-config --exists fontconfig") == 0: # 0 means found
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env.Append(CPPDEFINES=["FONTCONFIG_ENABLED"])
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env.ParseConfig("pkg-config fontconfig --cflags") # Only cflags, we dlopen the library.
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else:
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env["fontconfig"] = False
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print("Warning: fontconfig libraries not found. Disabling the system fonts support.")
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if os.system("pkg-config --exists alsa") == 0: # 0 means found
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env["alsa"] = True
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env.Append(CPPDEFINES=["ALSA_ENABLED", "ALSAMIDI_ENABLED"])
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env.ParseConfig("pkg-config alsa --cflags") # Only cflags, we dlopen the library.
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else:
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print("Warning: ALSA libraries not found. Disabling the ALSA audio driver.")
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if env["pulseaudio"]:
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if os.system("pkg-config --exists libpulse") == 0: # 0 means found
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env.Append(CPPDEFINES=["PULSEAUDIO_ENABLED"])
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env.ParseConfig("pkg-config libpulse --cflags") # Only cflags, we dlopen the library.
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else:
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env["pulseaudio"] = False
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print("Warning: PulseAudio development libraries not found. Disabling the PulseAudio audio driver.")
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if env["dbus"]:
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if os.system("pkg-config --exists dbus-1") == 0: # 0 means found
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env.Append(CPPDEFINES=["DBUS_ENABLED"])
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env.ParseConfig("pkg-config dbus-1 --cflags") # Only cflags, we dlopen the library.
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else:
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env["dbus"] = False
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print("Warning: D-Bus development libraries not found. Disabling screensaver prevention.")
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if env["speechd"]:
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if os.system("pkg-config --exists speech-dispatcher") == 0: # 0 means found
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env.Append(CPPDEFINES=["SPEECHD_ENABLED"])
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env.ParseConfig("pkg-config speech-dispatcher --cflags") # Only cflags, we dlopen the library.
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else:
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env["speechd"] = False
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print("Warning: Speech Dispatcher development libraries not found. Disabling Text-to-Speech support.")
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if platform.system() == "Linux":
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env.Append(CPPDEFINES=["JOYDEV_ENABLED"])
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if env["udev"]:
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if os.system("pkg-config --exists libudev") == 0: # 0 means found
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env.Append(CPPDEFINES=["UDEV_ENABLED"])
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env.ParseConfig("pkg-config libudev --cflags") # Only cflags, we dlopen the library.
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else:
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env["udev"] = False
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print("Warning: libudev development libraries not found. Disabling controller hotplugging support.")
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else:
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env["udev"] = False # Linux specific
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# Linkflags below this line should typically stay the last ones
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if not env["builtin_zlib"]:
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env.ParseConfig("pkg-config zlib --cflags --libs")
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env.Prepend(CPPPATH=["#platform/linuxbsd"])
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if env["x11"]:
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if not env["vulkan"]:
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print("Error: X11 support requires vulkan=yes")
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env.Exit(255)
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env.Append(CPPDEFINES=["X11_ENABLED"])
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env.Append(CPPDEFINES=["UNIX_ENABLED"])
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env.Append(CPPDEFINES=[("_FILE_OFFSET_BITS", 64)])
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if env["vulkan"]:
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env.Append(CPPDEFINES=["VULKAN_ENABLED"])
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if not env["use_volk"]:
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env.ParseConfig("pkg-config vulkan --cflags --libs")
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if not env["builtin_glslang"]:
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# No pkgconfig file so far, hardcode expected lib name.
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env.Append(LIBS=["glslang", "SPIRV"])
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if env["opengl3"]:
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env.Append(CPPDEFINES=["GLES3_ENABLED"])
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env.ParseConfig("pkg-config gl --cflags --libs")
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env.Append(LIBS=["pthread"])
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if platform.system() == "Linux":
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env.Append(LIBS=["dl"])
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if platform.system().find("BSD") >= 0:
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env["execinfo"] = True
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if env["execinfo"]:
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env.Append(LIBS=["execinfo"])
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if not env["tools"]:
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import subprocess
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import re
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linker_version_str = subprocess.check_output(
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[env.subst(env["LINK"]), "-Wl,--version"] + env.subst(env["LINKFLAGS"])
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).decode("utf-8")
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gnu_ld_version = re.search("^GNU ld [^$]*(\d+\.\d+)$", linker_version_str, re.MULTILINE)
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if not gnu_ld_version:
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print(
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"Warning: Creating template binaries enabled for PCK embedding is currently only supported with GNU ld, not gold or LLD."
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)
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else:
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if float(gnu_ld_version.group(1)) >= 2.30:
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env.Append(LINKFLAGS=["-T", "platform/linuxbsd/pck_embed.ld"])
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else:
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env.Append(LINKFLAGS=["-T", "platform/linuxbsd/pck_embed.legacy.ld"])
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## Cross-compilation
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# TODO: Support cross-compilation on architectures other than x86.
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host_is_64_bit = sys.maxsize > 2**32
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if host_is_64_bit and env["arch"] == "x86_32":
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env.Append(CCFLAGS=["-m32"])
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env.Append(LINKFLAGS=["-m32", "-L/usr/lib/i386-linux-gnu"])
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elif not host_is_64_bit and env["arch"] == "x86_64":
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env.Append(CCFLAGS=["-m64"])
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env.Append(LINKFLAGS=["-m64", "-L/usr/lib/i686-linux-gnu"])
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# Link those statically for portability
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if env["use_static_cpp"]:
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env.Append(LINKFLAGS=["-static-libgcc", "-static-libstdc++"])
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if env["use_llvm"]:
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env["LINKCOM"] = env["LINKCOM"] + " -l:libatomic.a"
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else:
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if env["use_llvm"]:
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env.Append(LIBS=["atomic"])
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