build: Updating Waf 1.8.19 to 2.0.9

*) Platform was no longer recognized as a attribute of Options.  Used waf
Utils call to obtain unversioned platform name.

*) Task classes renamed from <taskname>_task to <taskname>.

Waf was not finding the classes when named with _task suffix.

*) Waf removed check option for 'type_name' check.

Added explicit embedded code snippet based on previous Waf versions to perform uint128 checks.

*) Waf source attribute is now strings, need to convert to nodes to retrieve parent node.

# Orig 1.8.19 testdir = self.source[-1].parent.path_from(self.bld.srcnode)
testdir = self.to_nodes(self.source[-1])[0].parent.path_from(self.bld.srcnode)

CHANGES.html

@@ -103,6 +103,7 @@ <h2>Changes to existing API:</h2>
 /ul>
 <h2>Changes to build system:</h2>
 <ul>
+  <li>Waf upgraded from 1.8.19 to 2.0.9, and ns-3 build scripts aligned to the new API.</li>
   <li>The '--no32bit-scan' argument is removed from Waf apiscan; generation of ILP32 bindings is now automated from the LP64 bindings.</li>
   <li> When using on newer compilers, new warnings may trigger build failures.
 The --disable-werror flag can be passed to Waf at configuration time to turn

RELEASE_NOTES

@@ -24,14 +24,13 @@ requirements (Note:  not all features available on all platforms):
 - Apple LLVM version 7.0.2 or later 
 - clang-3.3 or later
 
-In addition, Python 2.7 (Python 2 series) or Python 3.4-3.6 (Python 3 series) 
-- Note: Python 3.7 is not yet supported
+In addition, Python 2.7 (Python 2 series) or Python 3.4-3.7 (Python 3 series) 
 
 This release has been tested on the following platforms:
 - Ubuntu 18.04 (64 bit) with g++-7.3.0 and Python 2.7.15
-- Ubuntu 16.04 (64 bit) with g++-5.4.0 and Python 2.7.12
-- Fedora Core 28 (64 bit) with g++-8.1.1 and Python 2.7.15
-- Fedora Core 26 (64 bit) with g++-7.3.1 and g++-7.1.1, and Python 2.7.14
+- Ubuntu 16.04 (64 bit) with g++-5.4.0 and Python 2.7.12/3.5.2
+- Fedora Core 28 (64 bit) with g++-8.1.1 and Python 2.7.15/3.7.0
+- Fedora Core 26 (64 bit) with g++-7.3.1 and Python 2.7.14/3.6.5
 - macOS High Sierra 10.13.5 with Xcode 9.4.1, Apple LLVM version 9.1.0, Python 2.7.10
 
 New user-visible features

src/core/wscript

@@ -1,7 +1,7 @@
 ## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 import sys
 
-from waflib import Options
+from waflib import Options, Utils
 import wutils
 
 int64x64 = {
@@ -46,10 +46,34 @@ def options(opt):
 def configure(conf):
     int64x64_impl = Options.options.int64x64_impl
     if int64x64_impl == 'default' or int64x64_impl == 'int128':
-        have_uint128  = conf.check_nonfatal(type_name='uint128_t',
-                                            define_name='HAVE_UINT128_T')
-        have__uint128 = conf.check_nonfatal(type_name='__uint128_t',
-                                            define_name='HAVE___UINT128_T')
+
+        code_snip_type='''
+        #include <stdint.h>
+        
+        int main(int argc, char **argv) {
+	(void)argc; (void)argv;
+	if ((uint128_t *) 0) return 0;
+	if (sizeof (uint128_t)) return 0;
+	return 1;
+        }
+        '''
+        have_uint128  = conf.check_nonfatal(msg='checking for uint128_t',
+                                            define_name='HAVE_UINT128_T',
+                                            code=code_snip_type)
+
+        code_snip_type='''
+        #include <stdint.h>
+        
+        int main(int argc, char **argv) {
+	(void)argc; (void)argv;
+	if ((__uint128_t *) 0) return 0;
+	if (sizeof (__uint128_t)) return 0;
+	return 1;
+        }
+        '''
+        have__uint128 = conf.check_nonfatal(msg='checking for __uint128_t',
+                                            define_name='HAVE___UINT128_T',
+                                            code=code_snip_type)
         if have_uint128 or have__uint128:
             int64x64_impl = 'int128'
         else:
@@ -78,7 +102,7 @@ def configure(conf):
 
     # Check for POSIX threads
     test_env = conf.env.derive()
-    if Options.platform != 'darwin' and Options.platform != 'cygwin':
+    if Utils.unversioned_sys_platform() != 'darwin' and Utils.unversioned_sys_platform() != 'cygwin':
         test_env.append_value('LINKFLAGS', '-pthread')
         test_env.append_value('CXXFLAGS', '-pthread')
         test_env.append_value('CCFLAGS', '-pthread')
@@ -102,7 +126,7 @@ int main ()
                                            errmsg='Could not find pthread support (build/config.log for details)')
     if have_pthread:
         # darwin accepts -pthread but prints a warning saying it is ignored
-        if Options.platform != 'darwin' and Options.platform != 'cygwin':
+        if Utils.unversioned_sys_platform() != 'darwin' and Utils.unversioned_sys_platform() != 'cygwin':
             conf.env['CXXFLAGS_PTHREAD'] = '-pthread'
             conf.env['CCFLAGS_PTHREAD'] = '-pthread'
             conf.env['LINKFLAGS_PTHREAD'] = '-pthread'

src/wscript

@@ -147,7 +147,7 @@ def create_ns3_module(bld, name, dependencies=(), test=False):
 def apply_incpaths_ns3testlib(self):
     if not self.source:
         return
-    testdir = self.source[-1].parent.path_from(self.bld.srcnode)
+    testdir = self.to_nodes(self.source[-1])[0].parent.path_from(self.bld.srcnode)
     self.env.append_value("DEFINES", 'NS_TEST_SOURCEDIR="%s"' % (testdir,))
 
 
@@ -287,7 +287,7 @@ def ns3_python_bindings(bld):
             pymod.env.append_value('LINKFLAGS', '-Wl,-Bdynamic,--no-whole-archive')
     defines = list(pymod.env['DEFINES'])
     defines.extend(['NS_DEPRECATED=', 'NS3_DEPRECATED_H'])
-    if Options.platform == 'win32':
+    if Utils.unversioned_sys_platform()== 'win32':
         try:
             defines.remove('_DEBUG') # causes undefined symbols on win32
         except ValueError:
@@ -330,7 +330,7 @@ def build(bld):
         modheader = bld(features='ns3moduleheader')
         modheader.module = module.split('/')[-1]
 
-class ns3pcfile_task(Task.Task):
+class ns3pcfile(Task.Task):
     after = 'cxx'
 
     def __str__(self):
@@ -339,7 +339,7 @@ class ns3pcfile_task(Task.Task):
         return 'pcfile: %s' % (tgt_str)
 
     def runnable_status(self):
-        return super(ns3pcfile_task, self).runnable_status()
+        return super(ns3pcfile, self).runnable_status()
 
     def _self_libs(self, env, name, libdir):
         if env['ENABLE_STATIC_NS3']:
@@ -470,7 +470,7 @@ def apply_ns3header(self):
     self.source = '' # tell WAF not to process these files further
 
 
-class ns3header_task(Task.Task):
+class ns3header(Task.Task):
     before = 'cxx gen_ns3_module_header'
     color = 'BLUE'
 
@@ -510,7 +510,7 @@ class ns3header_task(Task.Task):
             else:
                 return Task.SKIP_ME
         else:
-            return super(ns3header_task, self).runnable_status()
+            return super(ns3header, self).runnable_status()
 
     def run(self):
         if self.mode == 'install':
@@ -561,7 +561,7 @@ def apply_ns3privateheader(self):
     self.headers = set(self.to_list(self.source))
     self.source = '' # tell WAF not to process these files further
 
-class ns3privateheader_task(Task.Task):
+class ns3privateheader(Task.Task):
     before = 'cxx gen_ns3_module_header'
     after = 'ns3header'
     color = 'BLUE'
@@ -602,7 +602,7 @@ class ns3privateheader_task(Task.Task):
             else:
                 return Task.SKIP_ME
         else:
-            return super(ns3privateheader_task, self).runnable_status()
+            return super(ns3privateheader, self).runnable_status()
 
     def run(self):
         if self.mode == 'install':
@@ -631,7 +631,7 @@ class ns3privateheader_task(Task.Task):
             return 0
 
 
-class gen_ns3_module_header_task(Task.Task):
+class gen_ns3_module_header(Task.Task):
     before = 'cxx'
     after = 'ns3header'
     color = 'BLUE'
@@ -643,7 +643,7 @@ class gen_ns3_module_header_task(Task.Task):
             else:
                 return Task.SKIP_ME
         else:
-            return super(gen_ns3_module_header_task, self).runnable_status()
+            return super(gen_ns3_module_header, self).runnable_status()
 
     def __str__(self):
         "string to display to the user"

waf-tools/command.py

@@ -13,7 +13,7 @@
 
 arg_rx = re.compile(r"(?P<dollar>\$\$)|(?P<subst>\$\{(?P<var>\w+)(?P<code>.*?)\})", re.M)
 
-class command_task(Task.Task):
+class command(Task.Task):
 	color = "BLUE"
 	def __init__(self, env, generator):
 		Task.Task.__init__(self, env=env, normal=1, generator=generator)

wscript

@@ -417,7 +417,7 @@ def configure(conf):
         if libstdcxx_location:
             conf.env.append_value('NS3_MODULE_PATH', libstdcxx_location)
 
-        if Options.platform in ['linux']:
+        if Utils.unversioned_sys_platform() in ['linux']:
             if conf.check_compilation_flag('-Wl,--soname=foo'):
                 env['WL_SONAME_SUPPORTED'] = True