Adding build script, waf tools and tests

Change-Id: I3dd9d60731a84ede3e59413d084d6f0a020f2f5f
Refs: #3428
diff --git a/.waf-tools/default-compiler-flags.py b/.waf-tools/default-compiler-flags.py
new file mode 100755
index 0000000..190c9a1
--- /dev/null
+++ b/.waf-tools/default-compiler-flags.py
@@ -0,0 +1,74 @@
+# -*- 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
+                    '-Wall', '-Wno-nested-anon-types']
+
+    if conf.options.debug:
+        conf.define('_DEBUG', 1)
+        conf.env['_DEBUG'] = 1
+        defaultFlags += ['-O0',
+                         '-Og', # gcc >= 4.8
+                         '-g3',
+                         '-fcolor-diagnostics', # clang
+                         '-fdiagnostics-color', # gcc >= 4.9
+                         '-Werror',
+                         '-Wno-unused-variable',
+                         '-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