import os import platform import sys from methods import get_compiler_version, using_gcc from platform_methods import detect_arch 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_thinlto", "Use ThinLTO (LLVM only, requires linker=lld, implies use_lto=yes)", 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", 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("debug_symbols", "Add debugging symbols to release/release_debug builds", True), BoolVariable("separate_debug_symbols", "Create a separate file containing debugging symbols", False), 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): # 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["target"] == "release": if env["optimize"] == "speed": # optimize for speed (default) env.Prepend(CCFLAGS=["-O3"]) elif env["optimize"] == "size": # optimize for size env.Prepend(CCFLAGS=["-Os"]) if env["debug_symbols"]: env.Prepend(CCFLAGS=["-g2"]) elif env["target"] == "release_debug": if env["optimize"] == "speed": # optimize for speed (default) env.Prepend(CCFLAGS=["-O2"]) elif env["optimize"] == "size": # optimize for size env.Prepend(CCFLAGS=["-Os"]) if env["debug_symbols"]: env.Prepend(CCFLAGS=["-g2"]) elif env["target"] == "debug": env.Prepend(CCFLAGS=["-g3"]) 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_thinlto"]: if not env["use_llvm"] or env["linker"] != "lld": print("ThinLTO is only compatible with LLVM and the LLD linker, use `use_llvm=yes linker=lld`.") sys.exit(255) else: env["use_lto"] = True # ThinLTO implies LTO 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"]) if env["use_lto"]: if env["use_thinlto"]: 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"]: env.ParseConfig("pkg-config x11 --cflags --libs") env.ParseConfig("pkg-config xcursor --cflags --libs") env.ParseConfig("pkg-config xinerama --cflags --libs") env.ParseConfig("pkg-config xext --cflags --libs") env.ParseConfig("pkg-config xrandr --cflags --libs") env.ParseConfig("pkg-config xrender --cflags --libs") env.ParseConfig("pkg-config xi --cflags --libs") 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"]: if not env["vulkan"]: print("Error: X11 support requires vulkan=yes") env.Exit(255) 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.ParseConfig("pkg-config gl --cflags --libs") env.Append(LIBS=["pthread"]) if platform.system() == "Linux": env.Append(LIBS=["dl"]) if platform.system().find("BSD") >= 0: env["execinfo"] = True if env["execinfo"]: env.Append(LIBS=["execinfo"]) if not env["tools"]: import subprocess import re linker_version_str = subprocess.check_output([env.subst(env["LINK"]), "-Wl,--version"]).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"])