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godot/platform/linuxbsd/detect.py
Riteo 3960c6b8f9 Allow building X11 without Vulkan 
This limit was likely introduced when Vulkan was the only option.
2022-12-27 21:47:26 +01:00

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