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