Use std::unique_ptr instead of std::auto_ptr

.travis.yml

@@ -42,22 +42,44 @@ addons:
     - python3-dev
     - libboost-all-dev
     - xsltproc
+    - docbook-xsl
     - python-docutils
 
+
+cache:
+  directories:
+  - $HOME/Boost
+
 before_install:
-# The Trusty image has several Python versions pre-installed compiled with
-# conflicting UCS2 and UCS4 unicode. Modify the PATH to skip the TravisCI python.
-# See https://github.com/travis-ci/travis-ci/issues/4948 for details.
-- export PATH=$(echo $PATH | tr ':' "\n" | sed '/\/opt\/python/d' | tr "\n" ":" | sed "s|::|:|g")
-- sudo pip install future
+  # The Trusty image has several Python versions pre-installed compiled with
+  # conflicting UCS2 and UCS4 unicode. Modify the PATH to skip the TravisCI python.
+  # See https://github.com/travis-ci/travis-ci/issues/4948 for details.
+  - export PATH=$(echo $PATH | tr ':' "\n" | sed '/\/opt\/python/d' | tr "\n" ":" | sed "s|::|:|g")
+  - sudo pip install future
 
 install:
+  # Install our own version of Boost (the subset we need) as the system version is
+  # too old (for C++11 support).
+  - rm -rf $HOME/Boost
+  - |
+     set -e
+     if [ ! -d $HOME/Boost ]; then
+       echo "rebuilding Boost prerequisites"
+       wget https://sourceforge.net/projects/boost/files/boost/1.61.0/boost_1_61_0.tar.gz/download
+       tar xf download
+       pushd boost_1_61_0
+       ./bootstrap.sh
+       ./b2 tools/bcp
+       mkdir -p $HOME/Boost
+       dist/bin/bcp python tools/boostbook tools/quickbook $HOME/Boost &> /dev/null
+       popd
+     fi
 
 before_script:
 - scons --version
 
 script:
-- scons config --python=$PYTHON
+- scons config --python=$PYTHON --boost-include=$HOME/Boost
 - if [ "$DOC" ]; then scons doc; else scons && scons test; fi
 
 after_success: