PSync: initial commit
refs: #4641
Change-Id: Iabed3ad7632544d97559e6798547b7972b416784
diff --git a/.waf-tools/default-compiler-flags.py b/.waf-tools/default-compiler-flags.py
new file mode 100644
index 0000000..e690290
--- /dev/null
+++ b/.waf-tools/default-compiler-flags.py
@@ -0,0 +1,210 @@
+# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
+
+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 (-O0 or -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 < (5, 3, 0):
+ errmsg = ('The version of gcc you are using is too old.\n'
+ 'The minimum supported gcc version is 5.3.0.')
+ conf.flags = GccFlags()
+ elif cxx == 'clang':
+ if ccver < (3, 5, 0):
+ errmsg = ('The version of clang you are using is too old.\n'
+ 'The minimum supported clang version is 3.5.0.')
+ conf.flags = ClangFlags()
+ else:
+ warnmsg = 'Note: %s compiler is unsupported' % cxx
+ conf.flags = CompilerFlags()
+
+ if errmsg:
+ conf.end_msg(ccverstr, color='RED')
+ conf.fatal(errmsg)
+ elif warnmsg:
+ conf.end_msg(ccverstr, color='YELLOW')
+ Logs.warn(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 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 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(object):
+ 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 GccBasicFlags(CompilerFlags):
+ """
+ This class defines basic flags that work for both gcc and clang compilers
+ """
+ def getGeneralFlags(self, conf):
+ flags = super(GccBasicFlags, self).getGeneralFlags(conf)
+ flags['CXXFLAGS'] += ['-std=c++14']
+ return flags
+
+ def getDebugFlags(self, conf):
+ flags = super(GccBasicFlags, self).getDebugFlags(conf)
+ flags['CXXFLAGS'] += ['-O0',
+ '-Og', # gcc >= 4.8, clang >= 4.0
+ '-g3',
+ '-pedantic',
+ '-Wall',
+ '-Wextra',
+ '-Werror',
+ '-Wnon-virtual-dtor',
+ '-Wno-error=deprecated-declarations', # Bug #3795
+ '-Wno-error=maybe-uninitialized', # Bug #1615
+ '-Wno-unused-parameter',
+ ]
+ flags['LINKFLAGS'] += ['-fuse-ld=gold', '-Wl,-O1']
+ return flags
+
+ def getOptimizedFlags(self, conf):
+ flags = super(GccBasicFlags, self).getOptimizedFlags(conf)
+ flags['CXXFLAGS'] += ['-O2',
+ '-g',
+ '-pedantic',
+ '-Wall',
+ '-Wextra',
+ '-Wnon-virtual-dtor',
+ '-Wno-unused-parameter',
+ ]
+ flags['LINKFLAGS'] += ['-fuse-ld=gold', '-Wl,-O1']
+ return flags
+
+class GccFlags(GccBasicFlags):
+ def getDebugFlags(self, conf):
+ flags = super(GccFlags, self).getDebugFlags(conf)
+ flags['CXXFLAGS'] += ['-fdiagnostics-color']
+ return flags
+
+ def getOptimizedFlags(self, conf):
+ flags = super(GccFlags, self).getOptimizedFlags(conf)
+ flags['CXXFLAGS'] += ['-fdiagnostics-color']
+ return flags
+
+class ClangFlags(GccBasicFlags):
+ def getGeneralFlags(self, conf):
+ flags = super(ClangFlags, self).getGeneralFlags(conf)
+ if Utils.unversioned_sys_platform() == 'darwin' and self.getCompilerVersion(conf) >= (9, 0, 0):
+ # Bug #4296
+ flags['CXXFLAGS'] += [['-isystem', '/usr/local/include'], # for Homebrew
+ ['-isystem', '/opt/local/include']] # for MacPorts
+ return flags
+
+ def getDebugFlags(self, conf):
+ flags = super(ClangFlags, self).getDebugFlags(conf)
+ flags['CXXFLAGS'] += ['-fcolor-diagnostics',
+ '-Wextra-semi',
+ '-Wundefined-func-template',
+ '-Wno-error=deprecated-register',
+ '-Wno-error=infinite-recursion', # Bug #3358
+ '-Wno-error=keyword-macro', # Bug #3235
+ '-Wno-error=unneeded-internal-declaration', # Bug #1588
+ '-Wno-unused-local-typedef', # Bugs #2657 and #3209
+ ]
+ version = self.getCompilerVersion(conf)
+ if version < (3, 9, 0) or (Utils.unversioned_sys_platform() == 'darwin' and version < (8, 1, 0)):
+ flags['CXXFLAGS'] += ['-Wno-unknown-pragmas']
+ return flags
+
+ def getOptimizedFlags(self, conf):
+ flags = super(ClangFlags, self).getOptimizedFlags(conf)
+ flags['CXXFLAGS'] += ['-fcolor-diagnostics',
+ '-Wextra-semi',
+ '-Wundefined-func-template',
+ '-Wno-unused-local-typedef', # Bugs #2657 and #3209
+ ]
+ version = self.getCompilerVersion(conf)
+ if version < (3, 9, 0) or (Utils.unversioned_sys_platform() == 'darwin' and version < (8, 1, 0)):
+ flags['CXXFLAGS'] += ['-Wno-unknown-pragmas']
+ return flags