diff --git a/.jenkins.d/README.md b/.jenkins.d/README.md
index 41812aa..39fa40b 100644
--- a/.jenkins.d/README.md
+++ b/.jenkins.d/README.md
@@ -13,13 +13,13 @@
 
   * `[OS_TYPE]`: `Linux`
   * `[DISTRO_TYPE]`: `Ubuntu`
-  * `[DISTRO_VERSION]`: `Ubuntu-14.04`, `Ubuntu-16.04`
+  * `[DISTRO_VERSION]`: `Ubuntu-16.04`, `Ubuntu-18.04`
 
   Possible values for OS X / macOS:
 
   * `[OS_TYPE]`: `OSX`
   * `[DISTRO_TYPE]`: `OSX` (can be absent)
-  * `[DISTRO_VERSION]`: `OSX-10.10`, `OSX-10.11`, `OSX-10.12`
+  * `[DISTRO_VERSION]`: `OSX-10.11`, `OSX-10.12`, `OSX-10.13`
 
 - `JOB_NAME`: optional variable to define type of the job.  Depending on the defined job type,
   the build scripts can perform different tasks.
diff --git a/.travis.yml b/.travis.yml
index c310d6b..984e8ac 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: cpp
-dist: trusty
+dist: xenial
 sudo: required
 env:
   global:
@@ -11,92 +11,34 @@
     # Linux/gcc
     # https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test/+packages
     - os: linux
-      env: COMPILER=g++-4.8
-    - os: linux
-      env: COMPILER=g++-4.9
-      addons:
-        apt:
-          sources: ubuntu-toolchain-r-test
-          packages: g++-4.9
-    - os: linux
       env: COMPILER=g++-5
-      addons:
-        apt:
-          sources: ubuntu-toolchain-r-test
-          packages: g++-5
     - os: linux
       env: COMPILER=g++-6
-      addons:
-        apt:
-          sources: ubuntu-toolchain-r-test
-          packages: g++-6
     - os: linux
       env: COMPILER=g++-7
-      addons:
-        apt:
-          sources: ubuntu-toolchain-r-test
-          packages: g++-7
     - os: linux
       env: COMPILER=g++-8
-      addons:
-        apt:
-          sources: ubuntu-toolchain-r-test
-          packages: g++-8
 
     # Linux/clang
     # https://apt.llvm.org/
     - os: linux
       env: COMPILER=clang++-3.5
-      addons:
-        apt:
-          packages: clang-3.5
     - os: linux
       env: COMPILER=clang++-3.6
-      addons:
-        apt:
-          packages: clang-3.6
     - os: linux
       env: COMPILER=clang++-3.7 DISABLE_ASAN=yes
-      addons:
-        apt:
-          sources: ["llvm-toolchain-precise-3.7", "ubuntu-toolchain-r-test"]
-          packages: clang-3.7
     - os: linux
       env: COMPILER=clang++-3.8
-      addons:
-        apt:
-          sources: ["llvm-toolchain-precise-3.8", "ubuntu-toolchain-r-test"]
-          packages: clang-3.8
     - os: linux
-      env: COMPILER=clang++-3.9 DISABLE_ASAN=yes
-      addons:
-        apt:
-          sources: ["llvm-toolchain-trusty-3.9", "ubuntu-toolchain-r-test"]
-          packages: clang-3.9
+      env: COMPILER=clang++-3.9
     - os: linux
       env: COMPILER=clang++-4.0
-      addons:
-        apt:
-          sources: ["llvm-toolchain-trusty-4.0", "ubuntu-toolchain-r-test"]
-          packages: clang-4.0
     - os: linux
       env: COMPILER=clang++-5.0
-      addons:
-        apt:
-          sources: ["llvm-toolchain-trusty-5.0", "ubuntu-toolchain-r-test"]
-          packages: clang-5.0
     - os: linux
       env: COMPILER=clang++-6.0
-      addons:
-        apt:
-          sources: ["llvm-toolchain-trusty-6.0", "ubuntu-toolchain-r-test"]
-          packages: clang-6.0
     - os: linux
       env: COMPILER=clang++-7
-      addons:
-        apt:
-          sources: ["llvm-toolchain-trusty", "ubuntu-toolchain-r-test"]
-          packages: clang-7
 
     # macOS/clang
     # https://docs.travis-ci.com/user/reference/osx/#OS-X-Version
@@ -111,12 +53,41 @@
       env: OSX_VERSION=10.13
 
   allow_failures:
+    - env: COMPILER=g++-6
+    - env: COMPILER=g++-7
+    - env: COMPILER=g++-8
+    - env: COMPILER=clang++-3.5
+    - env: COMPILER=clang++-3.6
+    - env: COMPILER=clang++-3.7 DISABLE_ASAN=yes
+    - env: COMPILER=clang++-3.8
+    - env: COMPILER=clang++-3.9
+    - env: COMPILER=clang++-4.0
+    - env: COMPILER=clang++-5.0
+    - env: COMPILER=clang++-6.0
     - env: COMPILER=clang++-7
 
   fast_finish: true
 
+install: |
+    case ${COMPILER} in
+      g++-[6789])
+        travis_retry sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+        travis_retry sudo apt-get -qq update
+        travis_retry sudo apt-get -qy install "${COMPILER}"
+        ;;
+      clang++-*)
+        CLANG_VERSION=${COMPILER/clang++}
+        if [[ ${CLANG_VERSION} != "-3."* ]]; then
+          wget -O - "https://apt.llvm.org/llvm-snapshot.gpg.key" | sudo apt-key add -
+          travis_retry sudo add-apt-repository -y "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial${CLANG_VERSION/-7} main"
+        fi
+        travis_retry sudo apt-get -qq update
+        travis_retry sudo apt-get -qy install "clang${CLANG_VERSION}"
+        ;;
+    esac
+
 before_script:
-  - if [[ ${TRAVIS_OS_NAME} == linux ]]; then export NODE_LABELS="Linux Ubuntu Ubuntu-14.04"; fi
+  - if [[ ${TRAVIS_OS_NAME} == linux ]]; then export NODE_LABELS="Linux Ubuntu Ubuntu-16.04"; fi
   - if [[ ${TRAVIS_OS_NAME} == osx ]]; then export NODE_LABELS="OSX OSX-${OSX_VERSION}"; fi
   - if [[ -n ${COMPILER} ]]; then export CXX=${COMPILER}; fi
   - ${CXX:-c++} --version
diff --git a/.waf-tools/default-compiler-flags.py b/.waf-tools/default-compiler-flags.py
index 54db7ea..e9fdcc6 100644
--- a/.waf-tools/default-compiler-flags.py
+++ b/.waf-tools/default-compiler-flags.py
@@ -15,14 +15,14 @@
     errmsg = ''
     warnmsg = ''
     if cxx == 'gcc':
-        if ccver < (4, 8, 2):
+        if ccver < (5, 3, 0):
             errmsg = ('The version of gcc you are using is too old.\n'
-                      'The minimum supported gcc version is 4.8.2.')
+                      'The minimum supported gcc version is 5.3.0.')
         conf.flags = GccFlags()
     elif cxx == 'clang':
-        if ccver < (3, 4, 0):
+        if ccver < (3, 5, 0):
             errmsg = ('The version of clang you are using is too old.\n'
-                      'The minimum supported clang version is 3.4.0.')
+                      'The minimum supported clang version is 3.5.0.')
         conf.flags = ClangFlags()
     else:
         warnmsg = 'Note: %s compiler is unsupported' % cxx
@@ -164,16 +164,12 @@
 class GccFlags(GccBasicFlags):
     def getDebugFlags(self, conf):
         flags = super(GccFlags, self).getDebugFlags(conf)
-        if self.getCompilerVersion(conf) < (5, 1, 0):
-            flags['CXXFLAGS'] += ['-Wno-missing-field-initializers']
-        flags['CXXFLAGS'] += ['-fdiagnostics-color'] # gcc >= 4.9
+        flags['CXXFLAGS'] += ['-fdiagnostics-color']
         return flags
 
     def getOptimizedFlags(self, conf):
         flags = super(GccFlags, self).getOptimizedFlags(conf)
-        if self.getCompilerVersion(conf) < (5, 1, 0):
-            flags['CXXFLAGS'] += ['-Wno-missing-field-initializers']
-        flags['CXXFLAGS'] += ['-fdiagnostics-color'] # gcc >= 4.9
+        flags['CXXFLAGS'] += ['-fdiagnostics-color']
         return flags
 
 class ClangFlags(GccBasicFlags):
diff --git a/README-dev.md b/README-dev.md
index dc3e937..3f6fef3 100644
--- a/README-dev.md
+++ b/README-dev.md
@@ -112,5 +112,5 @@
 
 ### Command Line Arguments
 
-[Boost.Program\_options](http://www.boost.org/doc/libs/1_54_0/doc/html/program_options.html) is
+[Boost.Program\_options](https://www.boost.org/doc/libs/1_58_0/doc/html/program_options.html) is
 preferred over getopt(3) for parsing command line arguments.
diff --git a/tests/test-case.t.cpp.sample b/tests/test-case.t.cpp.sample
index 7aa05f9..77d22c1 100644
--- a/tests/test-case.t.cpp.sample
+++ b/tests/test-case.t.cpp.sample
@@ -40,7 +40,7 @@
   int i = 0;
 
   // For reference of available Boost.Test macros, see
-  // http://www.boost.org/doc/libs/1_54_0/libs/test/doc/html/utf/testing-tools/reference.html
+  // https://www.boost.org/doc/libs/1_58_0/libs/test/doc/html/utf/testing-tools/reference.html
 
   BOOST_REQUIRE_NO_THROW(i = 1);
   BOOST_REQUIRE_EQUAL(i, 1);
diff --git a/wscript b/wscript
index 4782454..c7ccb62 100644
--- a/wscript
+++ b/wscript
@@ -83,7 +83,7 @@
             else:
                 # no tags matched
                 Context.g_module.VERSION = '%s-commit-%s' % (VERSION_BASE, out)
-    except subprocess.CalledProcessError:
+    except (OSError, subprocess.CalledProcessError):
         pass
 
     versionFile = ctx.path.find_node('VERSION')