import os import platform import sys from methods import get_compiler_version, using_gcc, using_clang def is_active(): return True def get_name(): return "X11" def can_build(): if os.name != "posix" or sys.platform == "darwin": return False # Check the minimal dependencies x11_error = os.system("pkg-config --version > /dev/null") if x11_error: print("Error: pkg-config not found. Aborting.") return False x11_error = os.system("pkg-config x11 --modversion > /dev/null") if x11_error: print("Error: X11 libraries not found. Aborting.") return False x11_error = os.system("pkg-config xcursor --modversion > /dev/null") if x11_error: print("Error: Xcursor library not found. Aborting.") return False x11_error = os.system("pkg-config xinerama --modversion > /dev/null") if x11_error: print("Error: Xinerama library not found. Aborting.") return False x11_error = os.system("pkg-config xext --modversion > /dev/null") if x11_error: print("Error: Xext library not found. Aborting.") return False x11_error = os.system("pkg-config xrandr --modversion > /dev/null") if x11_error: print("Error: XrandR library not found. Aborting.") return False x11_error = os.system("pkg-config xrender --modversion > /dev/null") if x11_error: print("Error: XRender library not found. Aborting.") return False x11_error = os.system("pkg-config xi --modversion > /dev/null") if x11_error: print("Error: Xi library 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_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/GCC compiler memory sanitizer (MSAN))", False), BoolVariable("pulseaudio", "Detect and use PulseAudio", True), BoolVariable("udev", "Use udev for gamepad connection callbacks", 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 [] def configure(env): ## 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=["-ggdb"]) env.Prepend(CCFLAGS=["-g3"]) env.Append(LINKFLAGS=["-rdynamic"]) if env["debug_symbols"]: # Adding dwarf-4 explicitly makes stacktraces work with clang builds, # otherwise addr2line doesn't understand them env.Append(CCFLAGS=["-gdwarf-4"]) ## Architecture is64 = sys.maxsize > 2**32 if env["bits"] == "default": env["bits"] = "64" if is64 else "32" machines = { "riscv64": "rv64", "ppc64le": "ppc64", "ppc64": "ppc64", "ppcle": "ppc", "ppc": "ppc", } if env["arch"] == "" and platform.machine() in machines: env["arch"] = machines[platform.machine()] 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 # Linker 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_semver = tuple(get_compiler_version(env)) 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"]]) # Sanitizers if env["use_ubsan"] or env["use_asan"] or env["use_lsan"] or env["use_tsan"] or env["use_msan"]: env.extra_suffix += "s" 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" ] ) if env["use_llvm"]: env.Append( CCFLAGS=[ "-fsanitize=nullability-return,nullability-arg,function,nullability-assign,implicit-integer-sign-change,implicit-signed-integer-truncation,implicit-unsigned-integer-truncation" ] ) else: env.Append(CCFLAGS=["-fsanitize=bounds-strict"]) env.Append(LINKFLAGS=["-fsanitize=undefined"]) 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"]: env.Append(CCFLAGS=["-fsanitize=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"]) # Check for gcc version >= 6 before adding -no-pie version = get_compiler_version(env) or [-1, -1] if using_gcc(env): if version[0] >= 6: env.Append(CCFLAGS=["-fpie"]) env.Append(LINKFLAGS=["-no-pie"]) # Do the same for clang should be fine with Clang 4 and higher if using_clang(env): if version[0] >= 4: env.Append(CCFLAGS=["-fpie"]) env.Append(LINKFLAGS=["-no-pie"]) ## Dependencies 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"]: env["builtin_freetype"] = True env["builtin_libpng"] = True env["builtin_zlib"] = True if not env["builtin_freetype"]: env.ParseConfig("pkg-config freetype2 --cflags --libs") if not env["builtin_libpng"]: env.ParseConfig("pkg-config libpng16 --cflags --libs") if False: # not env['builtin_assimp']: # FIXME: Add min version check env.ParseConfig("pkg-config assimp --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: list_of_x86 = ["x86_64", "x86", "i386", "i586"] if env["arch"] == "": if any(platform.machine() in s for s in list_of_x86): env["x86_libtheora_opt_gcc"] = True else: if any(env["arch"] in s for s in list_of_x86): 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_opus"]: env["builtin_libogg"] = False # Needed to link against system opus env.ParseConfig("pkg-config opus opusfile --cflags --libs") if not env["builtin_libogg"]: env.ParseConfig("pkg-config ogg --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") ## Flags 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: print("Warning: PulseAudio development libraries not found. Disabling the PulseAudio audio driver.") 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: 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/x11"]) env.Append(CPPDEFINES=["X11_ENABLED", "UNIX_ENABLED", "OPENGL_ENABLED", "GLES_ENABLED", ("_FILE_OFFSET_BITS", 64)]) env.ParseConfig("pkg-config gl --cflags --libs") 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["tools"]: 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 export template binaries enabled for PCK embedding is currently only supported with GNU ld, not gold, LLD or mold." ) else: if float(gnu_ld_version.group(1)) >= 2.30: env.Append(LINKFLAGS=["-T", "platform/x11/pck_embed.ld"]) else: env.Append(LINKFLAGS=["-T", "platform/x11/pck_embed.legacy.ld"]) ## Cross-compilation if is64 and env["bits"] == "32": env.Append(CCFLAGS=["-m32"]) env.Append(LINKFLAGS=["-m32", "-L/usr/lib/i386-linux-gnu"]) elif not is64 and env["bits"] == "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"] and platform.system() != "FreeBSD": #env["LINKCOM"] = env["LINKCOM"] + " -l:libatomic.a" env["LINKCOM"] = env["LINKCOM"] + " -latomic" else: if env["use_llvm"] and platform.system() != "FreeBSD": env.Append(LIBS=["atomic"])