Fix environment
Change-Id: Ic053e2717a222f4db36e03ef1bba8a72c6bcaafa
diff --git a/.waf-tools/default-compiler-flags.py b/.waf-tools/default-compiler-flags.py
new file mode 100644
index 0000000..9f15fcc
--- /dev/null
+++ b/.waf-tools/default-compiler-flags.py
@@ -0,0 +1,183 @@
+# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
+
+from waflib import Logs, Configure, Utils
+
+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):
+ cxx = conf.env['CXX_NAME'] # CXX_NAME represents generic name of the compiler
+ if cxx == 'gcc':
+ flags = GccFlags()
+ elif cxx == 'clang':
+ flags = ClangFlags()
+ else:
+ flags = CompilerFlags()
+ Logs.warn('The code has not yet been tested with %s compiler' % cxx)
+
+ areCustomCxxflagsPresent = (len(conf.env.CXXFLAGS) > 0)
+
+ # General flags are always applied (e.g., selecting C++11 mode)
+ generalFlags = flags.getGeneralFlags(conf)
+ conf.add_supported_cxxflags(generalFlags['CXXFLAGS'])
+ conf.add_supported_linkflags(generalFlags['LINKFLAGS'])
+ conf.env.DEFINES += generalFlags['DEFINES']
+
+ # 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 = flags.getDebugFlags(conf)
+ if areCustomCxxflagsPresent:
+ missingFlags = [x for x in extraFlags['CXXFLAGS'] 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:
+ extraFlags = flags.getOptimizedFlags(conf)
+
+ if not 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 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
+ """
+ if len(linkflags) == 0:
+ return
+
+ 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
+
+
+class CompilerFlags(object):
+ 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 getDebugFlags(self, conf):
+ flags = super(GccBasicFlags, self).getDebugFlags(conf)
+ flags['CXXFLAGS'] += ['-O0',
+ '-g3',
+ '-pedantic',
+ '-Wall',
+ '-Wextra',
+ '-Werror',
+ '-Wno-unused-parameter',
+ '-Wno-error=maybe-uninitialized', # Bug #1615
+ ]
+ return flags
+
+ def getOptimizedFlags(self, conf):
+ flags = super(GccBasicFlags, self).getOptimizedFlags(conf)
+ flags['CXXFLAGS'] += ['-O2',
+ '-g',
+ '-pedantic',
+ '-Wall',
+ '-Wextra',
+ '-Wno-unused-parameter',
+ ]
+ return flags
+
+class GccFlags(GccBasicFlags):
+ def getGeneralFlags(self, conf):
+ flags = super(GccFlags, self).getGeneralFlags(conf)
+ version = tuple(int(i) for i in conf.env['CC_VERSION'])
+ if version < (4, 6, 0):
+ conf.fatal('The version of gcc you are using (%s) is too old.\n' %
+ '.'.join(conf.env['CC_VERSION']) +
+ 'The minimum supported gcc version is 4.6.0.')
+ elif version < (4, 7, 0):
+ flags['CXXFLAGS'] += ['-std=c++0x']
+ else:
+ flags['CXXFLAGS'] += ['-std=c++11']
+ if version < (4, 8, 0):
+ flags['DEFINES'] += ['_GLIBCXX_USE_NANOSLEEP'] # Bug #2499
+ return flags
+
+ def getDebugFlags(self, conf):
+ flags = super(GccFlags, self).getDebugFlags(conf)
+ version = tuple(int(i) for i in conf.env['CC_VERSION'])
+ if version < (5, 1, 0):
+ flags['CXXFLAGS'] += ['-Wno-missing-field-initializers']
+ flags['CXXFLAGS'] += ['-Og', # gcc >= 4.8
+ '-fdiagnostics-color', # gcc >= 4.9
+ ]
+ return flags
+
+ def getOptimizedFlags(self, conf):
+ flags = super(GccFlags, self).getOptimizedFlags(conf)
+ version = tuple(int(i) for i in conf.env['CC_VERSION'])
+ if version < (5, 1, 0):
+ flags['CXXFLAGS'] += ['-Wno-missing-field-initializers']
+ flags['CXXFLAGS'] += ['-fdiagnostics-color'] # gcc >= 4.9
+ return flags
+
+class ClangFlags(GccBasicFlags):
+ def getGeneralFlags(self, conf):
+ flags = super(ClangFlags, self).getGeneralFlags(conf)
+ flags['CXXFLAGS'] += ['-std=c++11']
+ if Utils.unversioned_sys_platform() == 'darwin':
+ flags['CXXFLAGS'] += ['-stdlib=libc++']
+ flags['LINKFLAGS'] += ['-stdlib=libc++']
+ return flags
+
+ def getDebugFlags(self, conf):
+ flags = super(ClangFlags, self).getDebugFlags(conf)
+ flags['CXXFLAGS'] += ['-fcolor-diagnostics',
+ '-Wno-unused-local-typedef', # Bugs #2657 and #3209
+ '-Wno-error=unneeded-internal-declaration', # Bug #1588
+ '-Wno-error=deprecated-register',
+ '-Wno-error=keyword-macro', # Bug #3235
+ ]
+ return flags
+
+ def getOptimizedFlags(self, conf):
+ flags = super(ClangFlags, self).getOptimizedFlags(conf)
+ flags['CXXFLAGS'] += ['-fcolor-diagnostics',
+ '-Wno-unused-local-typedef', # Bugs #2657 and #3209
+ ]
+ return flags