Many contributors (me included) did not fully understand what CCFLAGS, CXXFLAGS and CPPFLAGS refer to exactly, and were thus not using them in the way they are intended to be. As per the SCons manual: https://www.scons.org/doc/HTML/scons-user/apa.html - CCFLAGS: General options that are passed to the C and C++ compilers. - CFLAGS: General options that are passed to the C compiler (C only; not C++). - CXXFLAGS: General options that are passed to the C++ compiler. By default, this includes the value of $CCFLAGS, so that setting $CCFLAGS affects both C and C++ compilation. - CPPFLAGS: User-specified C preprocessor options. These will be included in any command that uses the C preprocessor, including not just compilation of C and C++ source files [...], but also [...] Fortran [...] and [...] assembly language source file[s]. TL;DR: Compiler options go to CCFLAGS, unless they must be restricted to either C (CFLAGS) or C++ (CXXFLAGS). Preprocessor defines go to CPPFLAGS.
237 lines
8.1 KiB
Python
237 lines
8.1 KiB
Python
import os
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import platform
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import sys
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# This file is mostly based on platform/x11/detect.py.
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# If editing this file, make sure to apply relevant changes here too.
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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 "Server"
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def get_program_suffix():
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if (sys.platform == "darwin"):
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return "osx"
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return "x11"
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def can_build():
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if (os.name != "posix"):
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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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BoolVariable('use_llvm', 'Use the LLVM compiler', False),
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BoolVariable('use_static_cpp', 'Link libgcc and libstdc++ statically for better portability', 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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EnumVariable('debug_symbols', 'Add debugging symbols to release builds', 'yes', ('yes', 'no', 'full')),
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BoolVariable('separate_debug_symbols', 'Create a separate file containing debugging symbols', False),
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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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def configure(env):
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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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else: #optimize for size
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env.Prepend(CCFLAGS=['-Os'])
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if (env["debug_symbols"] == "yes"):
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env.Prepend(CCFLAGS=['-g1'])
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if (env["debug_symbols"] == "full"):
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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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else: #optimize for size
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env.Prepend(CCFLAGS=['-Os'])
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env.Prepend(CPPFLAGS=['-DDEBUG_ENABLED'])
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if (env["debug_symbols"] == "yes"):
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env.Prepend(CCFLAGS=['-g1'])
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if (env["debug_symbols"] == "full"):
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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.Prepend(CPPFLAGS=['-DDEBUG_ENABLED', '-DDEBUG_MEMORY_ENABLED'])
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env.Append(LINKFLAGS=['-rdynamic'])
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## Architecture
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is64 = sys.maxsize > 2**32
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if (env["bits"] == "default"):
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env["bits"] = "64" if is64 else "32"
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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["LINK"] = "clang++"
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env.Append(CPPFLAGS=['-DTYPED_METHOD_BIND'])
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env.extra_suffix = ".llvm" + env.extra_suffix
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if env['use_ubsan'] or env['use_asan'] or env['use_lsan']:
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env.extra_suffix += "s"
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if env['use_ubsan']:
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env.Append(CCFLAGS=['-fsanitize=undefined'])
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env.Append(LINKFLAGS=['-fsanitize=undefined'])
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if env['use_asan']:
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env.Append(CCFLAGS=['-fsanitize=address'])
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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_lto']:
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env.Append(CCFLAGS=['-flto'])
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if not env['use_llvm'] and env.GetOption("num_jobs") > 1:
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env.Append(LINKFLAGS=['-flto=' + str(env.GetOption("num_jobs"))])
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else:
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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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env.Append(LINKFLAGS=['-pipe'])
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## Dependencies
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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 env['builtin_freetype'] or env['builtin_libpng'] or env['builtin_zlib']:
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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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if not env['builtin_freetype']:
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env.ParseConfig('pkg-config freetype2 --cflags --libs')
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if not env['builtin_libpng']:
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env.ParseConfig('pkg-config libpng --cflags --libs')
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if not env['builtin_bullet']:
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# We need at least version 2.88
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import subprocess
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bullet_version = subprocess.check_output(['pkg-config', 'bullet', '--modversion']).strip()
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if str(bullet_version) < "2.88":
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# Abort as system bullet was requested but too old
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print("Bullet: System version {0} does not match minimal requirements ({1}). Aborting.".format(bullet_version, "2.88"))
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sys.exit(255)
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env.ParseConfig('pkg-config bullet --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'] and env['tools']:
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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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list_of_x86 = ['x86_64', 'x86', 'i386', 'i586']
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if any(platform.machine() in s for s in list_of_x86):
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env["x86_libtheora_opt_gcc"] = True
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if not env['builtin_libvpx']:
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env.ParseConfig('pkg-config vpx --cflags --libs')
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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_opus']:
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env['builtin_libogg'] = False # Needed to link against system opus
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env.ParseConfig('pkg-config opus opusfile --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_libwebsockets']:
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env.ParseConfig('pkg-config libwebsockets --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.Append(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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## Flags
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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.Append(CPPPATH=['#platform/server'])
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env.Append(CPPFLAGS=['-DSERVER_ENABLED', '-DUNIX_ENABLED'])
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if (platform.system() == "Darwin"):
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env.Append(LINKFLAGS=['-framework', 'Cocoa', '-framework', 'Carbon', '-lz', '-framework', 'IOKit'])
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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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# 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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