Davide Pesavento
242 lines
8.3 KiB
Python
242 lines
8.3 KiB
Python
# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
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import platform
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from waflib import Configure, Logs, Utils
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def options(opt):
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opt.add_option('--debug', '--with-debug', action='store_true', default=False,
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help='Compile in debugging mode with minimal optimizations (-Og)')
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def configure(conf):
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conf.start_msg('Checking C++ compiler version')
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cxx = conf.env.CXX_NAME # generic name of the compiler
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ccver = tuple(int(i) for i in conf.env.CC_VERSION)
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ccverstr = '.'.join(conf.env.CC_VERSION)
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errmsg = ''
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warnmsg = ''
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if cxx == 'gcc':
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if ccver < (7, 4, 0):
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errmsg = ('The version of gcc you are using is too old.\n'
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'The minimum supported gcc version is 9.3.')
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elif ccver < (9, 3, 0):
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warnmsg = ('Using a version of gcc older than 9.3 is not '
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'officially supported and may result in build failures.')
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conf.flags = GccFlags()
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elif cxx == 'clang':
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if Utils.unversioned_sys_platform() == 'darwin':
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if ccver < (10, 0, 0):
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errmsg = ('The version of Xcode you are using is too old.\n'
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'The minimum supported Xcode version is 12.4.')
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elif ccver < (12, 0, 0):
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warnmsg = ('Using a version of Xcode older than 12.4 is not '
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'officially supported and may result in build failures.')
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elif ccver < (7, 0, 0):
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errmsg = ('The version of clang you are using is too old.\n'
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'The minimum supported clang version is 7.0.')
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conf.flags = ClangFlags()
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else:
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warnmsg = f'{cxx} compiler is unsupported'
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conf.flags = CompilerFlags()
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if errmsg:
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conf.end_msg(ccverstr, color='RED')
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conf.fatal(errmsg)
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elif warnmsg:
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conf.end_msg(ccverstr, color='YELLOW')
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Logs.warn('WARNING: ' + warnmsg)
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else:
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conf.end_msg(ccverstr)
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conf.areCustomCxxflagsPresent = len(conf.env.CXXFLAGS) > 0
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# General flags are always applied (e.g., selecting C++ language standard)
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generalFlags = conf.flags.getGeneralFlags(conf)
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conf.add_supported_cxxflags(generalFlags['CXXFLAGS'])
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conf.add_supported_linkflags(generalFlags['LINKFLAGS'])
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conf.env.DEFINES += generalFlags['DEFINES']
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@Configure.conf
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def check_compiler_flags(conf):
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# Debug or optimized CXXFLAGS and LINKFLAGS are applied only if the
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# corresponding environment variables are not set.
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# DEFINES are always applied.
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if conf.options.debug:
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extraFlags = conf.flags.getDebugFlags(conf)
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if conf.areCustomCxxflagsPresent:
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missingFlags = [x for x in extraFlags['CXXFLAGS'] if x not in conf.env.CXXFLAGS]
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if missingFlags:
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Logs.warn('Selected debug mode, but CXXFLAGS is set to a custom value "%s"'
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% ' '.join(conf.env.CXXFLAGS))
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Logs.warn('Default flags "%s" will not be used' % ' '.join(missingFlags))
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else:
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extraFlags = conf.flags.getOptimizedFlags(conf)
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if not conf.areCustomCxxflagsPresent:
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conf.add_supported_cxxflags(extraFlags['CXXFLAGS'])
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conf.add_supported_linkflags(extraFlags['LINKFLAGS'])
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conf.env.DEFINES += extraFlags['DEFINES']
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@Configure.conf
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def add_supported_cxxflags(self, cxxflags):
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"""
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Check which cxxflags are supported by the active compiler and add them to env.CXXFLAGS variable.
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"""
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if len(cxxflags) == 0:
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return
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self.start_msg('Checking supported CXXFLAGS')
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supportedFlags = []
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for flags in cxxflags:
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flags = Utils.to_list(flags)
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if self.check_cxx(cxxflags=['-Werror'] + flags, mandatory=False):
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supportedFlags += flags
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self.end_msg(' '.join(supportedFlags))
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self.env.prepend_value('CXXFLAGS', supportedFlags)
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@Configure.conf
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def add_supported_linkflags(self, linkflags):
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"""
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Check which linkflags are supported by the active compiler and add them to env.LINKFLAGS variable.
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"""
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if len(linkflags) == 0:
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return
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self.start_msg('Checking supported LINKFLAGS')
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supportedFlags = []
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for flags in linkflags:
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flags = Utils.to_list(flags)
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if self.check_cxx(linkflags=['-Werror'] + flags, mandatory=False):
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supportedFlags += flags
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self.end_msg(' '.join(supportedFlags))
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self.env.prepend_value('LINKFLAGS', supportedFlags)
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class CompilerFlags:
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def getCompilerVersion(self, conf):
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return tuple(int(i) for i in conf.env.CC_VERSION)
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def getGeneralFlags(self, conf):
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"""Get dict of CXXFLAGS, LINKFLAGS, and DEFINES that are always needed"""
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return {
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'CXXFLAGS': [],
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'LINKFLAGS': [],
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'DEFINES': ['BOOST_ASIO_NO_DEPRECATED', 'BOOST_FILESYSTEM_NO_DEPRECATED'],
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}
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def getDebugFlags(self, conf):
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"""Get dict of CXXFLAGS, LINKFLAGS, and DEFINES that are needed only in debug mode"""
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return {'CXXFLAGS': [], 'LINKFLAGS': [], 'DEFINES': ['_DEBUG']}
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def getOptimizedFlags(self, conf):
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"""Get dict of CXXFLAGS, LINKFLAGS, and DEFINES that are needed only in optimized mode"""
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return {'CXXFLAGS': [], 'LINKFLAGS': [], 'DEFINES': ['NDEBUG']}
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class GccClangCommonFlags(CompilerFlags):
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"""
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This class defines common flags that work for both gcc and clang compilers.
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"""
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def getGeneralFlags(self, conf):
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flags = super().getGeneralFlags(conf)
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flags['CXXFLAGS'] += ['-std=c++17']
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if Utils.unversioned_sys_platform() != 'darwin':
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flags['LINKFLAGS'] += ['-fuse-ld=lld']
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return flags
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__cxxFlags = [
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'-fdiagnostics-color',
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'-Wall',
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'-Wextra',
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'-Wpedantic',
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'-Wenum-conversion',
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'-Wextra-semi',
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'-Wnon-virtual-dtor',
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'-Wno-unused-parameter',
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]
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__linkFlags = ['-Wl,-O1']
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def getDebugFlags(self, conf):
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flags = super().getDebugFlags(conf)
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flags['CXXFLAGS'] += ['-Og', '-g'] + self.__cxxFlags + [
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'-Werror',
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'-Wno-error=deprecated-declarations', # Bug #3795
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'-Wno-error=maybe-uninitialized', # Bug #1615
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]
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flags['LINKFLAGS'] += self.__linkFlags
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return flags
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def getOptimizedFlags(self, conf):
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flags = super().getOptimizedFlags(conf)
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flags['CXXFLAGS'] += ['-O2', '-g1'] + self.__cxxFlags
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flags['LINKFLAGS'] += self.__linkFlags
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return flags
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class GccFlags(GccClangCommonFlags):
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__cxxFlags = [
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'-Wcatch-value=2',
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'-Wcomma-subscript', # enabled by default in C++20
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'-Wduplicated-branches',
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'-Wduplicated-cond',
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'-Wlogical-op',
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'-Wredundant-tags',
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'-Wvolatile', # enabled by default in C++20
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]
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def getDebugFlags(self, conf):
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flags = super().getDebugFlags(conf)
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flags['CXXFLAGS'] += self.__cxxFlags
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if platform.machine() == 'armv7l':
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flags['CXXFLAGS'] += ['-Wno-psabi'] # Bug #5106
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return flags
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def getOptimizedFlags(self, conf):
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flags = super().getOptimizedFlags(conf)
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flags['CXXFLAGS'] += self.__cxxFlags
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if platform.machine() == 'armv7l':
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flags['CXXFLAGS'] += ['-Wno-psabi'] # Bug #5106
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return flags
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class ClangFlags(GccClangCommonFlags):
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def getGeneralFlags(self, conf):
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flags = super().getGeneralFlags(conf)
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if Utils.unversioned_sys_platform() == 'darwin':
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# Bug #4296
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brewdir = '/opt/homebrew' if platform.machine() == 'arm64' else '/usr/local'
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flags['CXXFLAGS'] += [
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['-isystem', f'{brewdir}/include'], # for Homebrew
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['-isystem', '/opt/local/include'], # for MacPorts
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]
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elif Utils.unversioned_sys_platform() == 'freebsd':
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# Bug #4790
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flags['CXXFLAGS'] += [['-isystem', '/usr/local/include']]
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return flags
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__cxxFlags = [
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'-Wundefined-func-template',
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'-Wno-unused-local-typedef', # Bugs #2657 and #3209
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]
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def getDebugFlags(self, conf):
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flags = super().getDebugFlags(conf)
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flags['CXXFLAGS'] += self.__cxxFlags
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return flags
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def getOptimizedFlags(self, conf):
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flags = super().getOptimizedFlags(conf)
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flags['CXXFLAGS'] += self.__cxxFlags
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return flags
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