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import os
import platform
import sys
from methods import get_compiler_version, using_gcc
# This file is mostly based on platform/x11/detect.py.
# If editing this file, make sure to apply relevant changes here too.
def is_active():
return True
def get_name():
return "Server"
def get_program_suffix():
if sys.platform == "darwin":
return "osx"
return "x11"
def can_build():
if os.name != "posix":
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("debug_symbols", "Add debugging symbols to release/release_debug builds", True),
BoolVariable("use_msan", "Use LLVM/GCC compiler memory sanitizer (MSAN))", False),
BoolVariable("separate_debug_symbols", "Create a separate file containing debugging symbols", False),
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=["-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
# Cross-compilation
# TODO: Support cross-compilation on architectures other than x86.
host_is_64_bit = sys.maxsize > 2**32
if env["bits"] == "default":
env["bits"] = "64" if host_is_64_bit else "32"
if host_is_64_bit and (env["bits"] == "32" or env["arch"] == "x86"):
env.Append(CCFLAGS=["-m32"])
env.Append(LINKFLAGS=["-m32"])
elif not host_is_64_bit and (env["bits"] == "64" or env["arch"] == "x86_64"):
env.Append(CCFLAGS=["-m64"])
env.Append(LINKFLAGS=["-m64"])
if env["arch"] == "" and platform.machine() == "riscv64":
env["arch"] = "rv64"
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
env.Append(LIBS=["atomic"])
# 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"])
env.Append(LINKFLAGS=["-fsanitize=undefined"])
if env["use_asan"]:
env.Append(CCFLAGS=["-fsanitize=address"])
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"] != "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
# 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 not env["builtin_bullet"]:
# We need at least version 2.90
min_bullet_version = "2.90"
import subprocess
bullet_version = subprocess.check_output(["pkg-config", "bullet", "--modversion"]).strip()
if str(bullet_version) < min_bullet_version:
# Abort as system bullet was requested but too old
print(
"Bullet: System version {0} does not match minimal requirements ({1}). Aborting.".format(
bullet_version, min_bullet_version
)
)
sys.exit(255)
env.ParseConfig("pkg-config bullet --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 any(platform.machine() in s for s in list_of_x86):
env["x86_libtheora_opt_gcc"] = True
if not env["builtin_libvpx"]:
env.ParseConfig("pkg-config vpx --cflags --libs")
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_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_recast"]:
env.Append(LIBS=["Recast"])
env.Prepend(CPPPATH=["/usr/include/recastnavigation"])
if not env["builtin_wslay"]:
# wslay in Debian does not have a pkg-config configuration
env.Prepend(CPPPATH=["/usr/include/wslay"])
env.Append(LIBS=["wslay"])
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")
# Embree is only used in tools build on x86_64 and aarch64.
if env["tools"] and not env["builtin_embree"] and host_is_64_bit:
# No pkgconfig file so far, hardcode expected lib name.
env.Append(LIBS=["embree3"])
## Flags
# 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/server"])
env.Append(CPPDEFINES=["SERVER_ENABLED", "UNIX_ENABLED"])
if platform.system() == "Darwin":
env.Append(LINKFLAGS=["-framework", "Cocoa", "-framework", "Carbon", "-lz", "-framework", "IOKit"])
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 platform.system() != "Darwin":
# 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"
else:
if env["use_llvm"] and platform.system() != "FreeBSD":
env.Append(LIBS=["atomic"])
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