diff --git a/build_mac_installer.sh b/build_mac_installer.sh
new file mode 100755
index 00000000..021562dd
--- /dev/null
+++ b/build_mac_installer.sh
@@ -0,0 +1,79 @@
+#!/bin/sh
+
+# change this to rename the installer package
+B_DMG="Barrier-v1.9.dmg"
+
+cd $(dirname $0)
+
+# sanity check so we don't distribute packages full of debug symbols
+B_BUILD_TYPE=$(grep -E ^CMAKE_BUILD_TYPE build/CMakeCache.txt | cut -d= -f2)
+if [ "$B_BUILD_TYPE" != "Release" ]; then
+    echo Will only build installers for Release builds
+    exit 1
+fi
+
+B_REREF_SCRIPT=$(pwd)/mac_reref_dylibs.sh
+if [ ! -x $B_REREF_SCRIPT ]; then
+    echo Missing script: $B_REREF_SCRIPT
+    exit 1
+fi
+
+# remove any old copies so there's no confusion about whever this
+# process completes successfully or not
+rm -rf build/bundle/{bundle.dmg,$B_DMG}
+
+B_BINARY_PATH=$(pwd)/build/bin
+cd build/bundle/Barrier.app/Contents 2>/dev/null
+if [ $? -ne 0 ]; then
+    echo Please make sure that the build completed successfully
+    echo before trying to create the installer.
+    exit 1
+fi
+
+# MacOS folder holds the executables, non-system libraries,
+# and the startup script
+rm -rf MacOS
+mkdir MacOS || exit 1
+cd MacOS || exit 1
+
+# copy all executables
+cp ${B_BINARY_PATH}/* . || exit 1
+
+# copy the qt platform plugin
+# TODO: this is hacky and will probably break if there is more than one qt
+# version installed. need a better way to find this library
+B_COCOA=$(find /usr/local/Cellar/qt -type f -name libqcocoa.dylib | head -1)
+if [ $? -ne 0 ] || [ "x$B_COCOA" = "x" ]; then
+    echo "Could not find cocoa platform plugin"
+    exit 1
+fi
+mkdir platforms
+cp $B_COCOA platforms/ || exit 1
+
+# make sure we can r/w all these binaries
+chmod -R u+rw * || exit 1
+
+# only one executable (barrier) needs non-system libraries although it's
+# libraries can call each other. use a recursive script to handle the
+# re-referencing
+$B_REREF_SCRIPT barrier || exit 1
+# the cocoa platform plugin also needs to know where to find the qt libraries.
+# because it exists in a subdirectory we append ../ to the relative path of the
+# libraries in its metadata
+$B_REREF_SCRIPT platforms/libqcocoa.dylib ../ || exit 1
+
+# create a startup script that will change to the binary directory
+# before starting barrier
+printf "%s\n" "#!/bin/sh" "cd \$(dirname \$0)" "exec ./barrier" > barrier.sh
+chmod +x barrier.sh
+
+# create the DMG to be distributed in build/bundle
+cd ../../..
+hdiutil create -size 64m -fs HFS+ -volname "Barrier" bundle.dmg || exit 1
+hdiutil attach bundle.dmg -mountpoint mnt || exit 1
+cp -r Barrier.app mnt/ || exit 1
+hdiutil detach mnt || exit 1
+hdiutil convert bundle.dmg -format UDZO -o $B_DMG || exit 1
+rm bundle.dmg
+
+echo "Installer created successfully"
diff --git a/clean_build.sh b/clean_build.sh
index f5a99807..290d570e 100755
--- a/clean_build.sh
+++ b/clean_build.sh
@@ -13,9 +13,10 @@ if [ "$(uname)" = "Darwin" ]; then
     # OSX needs a lot of extra help, poor thing
     # run the osx_environment.sh script to fix paths
     [ -r ../osx_environment.sh ] && source ../osx_environment.sh
-    B_CMAKE_FLAGS="-DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk $B_CMAKE_FLAGS"
+    B_CMAKE_FLAGS="-DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9 $B_CMAKE_FLAGS"
 fi
 B_CMAKE_FLAGS="-DCMAKE_BUILD_TYPE=$B_BUILD_TYPE $B_CMAKE_FLAGS"
+echo Starting Barrier $B_BUILD_TYPE build...
 $B_CMAKE $B_CMAKE_FLAGS .. || exit 1
 make || exit 1
 echo "Build completed successfully"
diff --git a/dist/macos/bundle/Barrier.app/Contents/Info.plist.in b/dist/macos/bundle/Barrier.app/Contents/Info.plist.in
index 277963ae..b973f5e9 100644
--- a/dist/macos/bundle/Barrier.app/Contents/Info.plist.in
+++ b/dist/macos/bundle/Barrier.app/Contents/Info.plist.in
@@ -6,7 +6,7 @@
     <key>CFBundleDisplayName</key>
     <string>Barrier</string>
     <key>CFBundleExecutable</key>
-    <string>barrier</string>
+    <string>barrier.sh</string>
     <key>CFBundleIconFile</key>
     <string>Barrier.icns</string>
     <key>CFBundleIdentifier</key>
diff --git a/mac_reref_dylibs.sh b/mac_reref_dylibs.sh
new file mode 100755
index 00000000..15191bd2
--- /dev/null
+++ b/mac_reref_dylibs.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# $1 = binary (program or dylib)
+B_TARGET=$1
+if [ "x$B_TARGET" = "x" ]; then
+    echo Which binary needs to be re-referenced?
+    exit 1
+fi
+
+cd $(dirname $B_TARGET) || exit 1
+
+# where to find non-system libraries relative to target's directory.
+# the vast majority of the time this should be empty
+B_REL_PATH=$2
+
+# we're in target's directory now. trim off the path
+B_TARGET=$(basename $B_TARGET)
+
+# get a list of non-system libraries and make local copies
+B_LIBS=$(otool -XL $B_TARGET | awk '{ print $1 }' | grep -Ev '^(/usr/lib|/System)')
+[ $? -ne 0 ] && exit 1
+for B_LIB in $B_LIBS; do
+    B_LIB_NAME=$(basename $B_LIB)
+
+    # ignore self-references
+    [ "$B_TARGET" = "$B_LIB_NAME" ] && continue
+
+    B_DST=${B_REL_PATH}${B_LIB_NAME}
+    if [ ! -e $B_DST ]; then
+        cp $B_LIB $B_DST || exit 1
+        chmod u+rw $B_DST || exit 1
+        # recursively call this script on libraries purposefully not passing
+        # $B_REL_PATH so that it is only used explicitly
+        $0 $B_DST
+    fi
+
+    # adjust the target's metadata to point to the local copy
+    # rather than the system-wide copy which would only exist on
+    # a development machine
+    install_name_tool -change $B_LIB @loader_path/$B_DST  $B_TARGET || exit 1
+done
diff --git a/src/gui/src/MainWindow.cpp b/src/gui/src/MainWindow.cpp
index ae1fad40..83dbd548 100644
--- a/src/gui/src/MainWindow.cpp
+++ b/src/gui/src/MainWindow.cpp
@@ -945,6 +945,10 @@ void MainWindow::changeEvent(QEvent* event)
             windowStateChanged();
             break;
         }
+        default:
+        {
+            break;
+        }
         }
     }
     // all that do not return are allowing the event to propagate
diff --git a/src/gui/src/ScreenSetupView.h b/src/gui/src/ScreenSetupView.h
index a263a8d5..a6605117 100644
--- a/src/gui/src/ScreenSetupView.h
+++ b/src/gui/src/ScreenSetupView.h
@@ -43,14 +43,14 @@ class ScreenSetupView : public QTableView
         ScreenSetupModel* model() const;
 
     protected:
-        void mouseDoubleClickEvent(QMouseEvent*);
+        void mouseDoubleClickEvent(QMouseEvent*) override;
         void setTableSize();
-        void resizeEvent(QResizeEvent*);
-        void dragEnterEvent(QDragEnterEvent* event);
-        void dragMoveEvent(QDragMoveEvent* event);
-        void startDrag(Qt::DropActions supportedActions);
-        QStyleOptionViewItem viewOptions() const;
-        void scrollTo(const QModelIndex&, ScrollHint) {}
+        void resizeEvent(QResizeEvent*) override;
+        void dragEnterEvent(QDragEnterEvent* event) override;
+        void dragMoveEvent(QDragMoveEvent* event) override;
+        void startDrag(Qt::DropActions supportedActions) override;
+        QStyleOptionViewItem viewOptions() const override;
+        void scrollTo(const QModelIndex&, ScrollHint) override {}
 };
 
 #endif
diff --git a/src/lib/platform/OSXDragView.m b/src/lib/platform/OSXDragView.m
index 6ebc5973..9f774993 100644
--- a/src/lib/platform/OSXDragView.m
+++ b/src/lib/platform/OSXDragView.m
@@ -25,6 +25,17 @@
 @dynamic animatesToDestination;
 @dynamic numberOfValidItemsForDrop;
 
+/* springLoadingHighlight is a property that will not be auto-synthesized by
+   clang. explicitly synthesizing it here as well as defining an empty handler
+   for resetSpringLoading() satisfies the compiler */
+@synthesize springLoadingHighlight = _springLoadingHighlight;
+
+/* unused */
+- (void)
+resetSpringLoading
+{
+}
+
 - (id)
 initWithFrame:(NSRect)frame
 {