blob: c8b11e0f14124728f9f2da6d18a25762e0ec4552 [file] [log] [blame]
# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
from waflib import Logs, Configure
def options(opt):
opt.add_option('--debug', '--with-debug', action='store_true', default=False, dest='debug',
help='''Compile in debugging mode without optimizations (-O0 or -Og)''')
def configure(conf):
areCustomCxxflagsPresent = (len(conf.env.CXXFLAGS) > 0)
defaultFlags = ['-std=c++0x', '-std=c++11',
'-stdlib=libc++', # clang on OSX < 10.9 by default uses gcc's
# libstdc++, which is not C++11 compatible
'-pedantic', '-Wall']
if conf.options.debug:
conf.define('_DEBUG', 1)
defaultFlags += ['-O0',
'-Og', # gcc >= 4.8
'-g3',
'-fcolor-diagnostics', # clang
'-fdiagnostics-color', # gcc >= 4.9
'-Werror',
'-Wno-error=deprecated-register',
'-Wno-error=maybe-uninitialized', # Bug #1615
'-Wno-error=unneeded-internal-declaration', # Bug #1588
]
if areCustomCxxflagsPresent:
missingFlags = [x for x in defaultFlags if x not in conf.env.CXXFLAGS]
if len(missingFlags) > 0:
Logs.warn("Selected debug mode, but CXXFLAGS is set to a custom value '%s'"
% " ".join(conf.env.CXXFLAGS))
Logs.warn("Default flags '%s' are not activated" % " ".join(missingFlags))
else:
conf.add_supported_cxxflags(defaultFlags)
else:
defaultFlags += ['-O2', '-g']
if not areCustomCxxflagsPresent:
conf.add_supported_cxxflags(defaultFlags)
# clang on OSX < 10.9 by default uses gcc's libstdc++, which is not C++11 compatible
conf.add_supported_linkflags(['-stdlib=libc++'])
@Configure.conf
def add_supported_cxxflags(self, cxxflags):
"""
Check which cxxflags are supported by compiler and add them to env.CXXFLAGS variable
"""
self.start_msg('Checking supported CXXFLAGS')
supportedFlags = []
for flag in cxxflags:
if self.check_cxx(cxxflags=['-Werror', flag], mandatory=False):
supportedFlags += [flag]
self.end_msg(' '.join(supportedFlags))
self.env.CXXFLAGS = supportedFlags + self.env.CXXFLAGS
@Configure.conf
def add_supported_linkflags(self, linkflags):
"""
Check which linkflags are supported by compiler and add them to env.LINKFLAGS variable
"""
self.start_msg('Checking supported LINKFLAGS')
supportedFlags = []
for flag in linkflags:
if self.check_cxx(linkflags=['-Werror', flag], mandatory=False):
supportedFlags += [flag]
self.end_msg(' '.join(supportedFlags))
self.env.LINKFLAGS = supportedFlags + self.env.LINKFLAGS