diff --git a/.lgtm.yml b/.lgtm.yml
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+##########################################################################################
+# The engine-x Customize file classifications.                                           #
+# Results from files under any classifier will be excluded from LGTM                     #
+# statistics.                                                                            #
+##########################################################################################
+
+##########################################################################################
+# Use the `path_classifiers` block to define changes to the default classification of    #
+# files.                                                                                 #
+##########################################################################################
+path_classifiers:
+  test: 
+    - tests
+  library:
+    - external
+
+#########################################################################################
+# Use the `queries` block to change the default display of query results.               #
+#########################################################################################
+queries:
+  # Start by hiding the results of all queries.
+  - exclude: "external"
+
+#########################################################################################
+# Define changes to the default code extraction process.                                #
+# Each block configures the extraction of a single language, and modifies actions in a  #
+# named step. Every named step includes automatic default actions,                      #
+# except for the 'prepare' step. The steps are performed in the following sequence:     #
+# prepare                                                                               #
+# after_prepare                                                                         #
+# configure (C/C++ only)                                                                #
+# before_index                                                                          #
+# index                                                                                 #
+##########################################################################################
+
+#########################################################################################
+# Environment variables available to the steps:                                         #
+#########################################################################################
+
+# LGTM_SRC
+#   The root of the source tree.
+# LGTM_WORKSPACE
+#   An existing (initially empty) folder outside the source tree.
+#   Used for temporary download and setup commands.
+
+#########################################################################################
+# Use the extraction block to define changes to the default code extraction process     #
+# for one or more languages. The settings for each language are defined in a child      #
+# block, with one or more steps.                                                        #
+#########################################################################################
+
+extraction: 
+  # Define settings for C/C++ analysis
+  #####################################
+  cpp:
+    # Add an `after-prepare` step if you need to run commands after the prepare step.
+    # Each command should be listed on a separate line.
+    # This step is useful for C/C++ analysis where you want to prepare the environment
+    # for the `configure` step without changing the default behavior for that step. 
+    after_prepare:
+      - mkdir -p $LGTM_WORKSPACE/latest-gcc-symlinks
+      - ln -s /usr/bin/g++-6 $LGTM_WORKSPACE/latest-gcc-symlinks/g++
+      - ln -s /usr/bin/gcc-6 $LGTM_WORKSPACE/latest-gcc-symlinks/gcc
+      - export PATH=$LGTM_WORKSPACE/latest-gcc-symlinks:$PATH
+      - export GNU_MAKE=make
+      - export GIT=true
+      - export BUILD_TARGET=linux
+      - export TRAVIS_OS_NAME=linux
+      - export TRAVIS_PULL_REQUEST=true
+    # The `configure` step generates build configuration files which the `index` step
+    # then uses to build the codebase.
+    configure:
+      command:
+        - cd $LGTM_SRC
+        - tools/travis-scripts/before-install.sh
+    # The `index` step builds the code and extracts information during the build
+    # process.
+    index:
+      # Override the autobuild process by specifying a list of custom build commands
+      # to use instead. 
+      build_command:
+        - cd $LGTM_SRC
+        - tools/travis-scripts/run-script.sh