build: various updates

 * Upgrade waf to 2.0.14
 * Sync default compiler flags with ndn-cxx
 * Remove unused pch waf tool
 * Simplify compilation of unit-tests

Change-Id: I2aa21454dd5d691ad2093923582443e5f8329ba7
diff --git a/tests/boost-test.hpp b/tests/boost-test.hpp
index e3204c4..95aa881 100644
--- a/tests/boost-test.hpp
+++ b/tests/boost-test.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2019,  The University of Memphis
  *
  * This file is part of PSync.
@@ -17,8 +17,7 @@
  * PSync, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  *
  * \author Yingdi Yu <yingdi@cs.ucla.edu>
- *
- **/
+ */
 
 #ifndef PSYNC_TESTS_BOOST_TEST_HPP
 #define PSYNC_TESTS_BOOST_TEST_HPP
@@ -27,8 +26,7 @@
 #pragma GCC system_header
 #pragma clang system_header
 
+#define BOOST_TEST_DYN_LINK
 #include <boost/test/unit_test.hpp>
-#include <boost/concept_check.hpp>
-#include <boost/test/output_test_stream.hpp>
 
 #endif // PSYNC_TESTS_BOOST_TEST_HPP
diff --git a/tests/main.cpp b/tests/main.cpp
index 2b836ad..eb01a05 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2019,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -23,8 +23,7 @@
  * PSync, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define BOOST_TEST_DYN_LINK
-#define BOOST_TEST_ALTERNATIVE_INIT_API
+#define BOOST_TEST_MODULE PSync
 
 #include <boost/version.hpp>
 
@@ -32,9 +31,9 @@
 // Boost.Test v3.3 (Boost 1.62) natively supports multi-logger output
 #include "boost-test.hpp"
 #else
+#define BOOST_TEST_ALTERNATIVE_INIT_API
 #define BOOST_TEST_NO_MAIN
 #include "boost-test.hpp"
-
 #include "boost-multi-log-formatter.hpp"
 
 #include <boost/program_options/options_description.hpp>
diff --git a/tests/wscript b/tests/wscript
index facae68..65c5eeb 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -4,19 +4,8 @@
     if not bld.env['WITH_TESTS']:
         return
 
-    bld(
-        features='cxx',
-        name='unit-tests-main',
-        target='unit-tests-main',
-        source='main.cpp',
-        defines=['BOOST_TEST_MODULE=PSync Unit Tests'],
-        use='PSync'
-    )
-
-    bld.program(
-        target='../unit-tests',
-        features='cxx cxxprogram',
-        source=bld.path.ant_glob(['**/*.cpp'], excl=['main.cpp']),
-        use='PSync unit-tests-main',
-        install_path=None,
-    )
+    bld.program(target='../unit-tests',
+                name='unit-tests',
+                source=bld.path.ant_glob('**/*.cpp'),
+                use='PSync',
+                install_path=None)