diff --git a/TeaSpeak b/TeaSpeak
index 14d9936..035f23e 160000
--- a/TeaSpeak
+++ b/TeaSpeak
@@ -1 +1 @@
-Subproject commit 14d9936d90e5a25196020a09221b00a76df8ce83
+Subproject commit 035f23ef23d5e255902f524f33465be3a61db5a4
diff --git a/build-helpers b/build-helpers
index 3bc7c73..88e6be8 160000
--- a/build-helpers
+++ b/build-helpers
@@ -1 +1 @@
-Subproject commit 3bc7c7371c2e38d1577c99427e3d736c932ee18e
+Subproject commit 88e6be81bbe42c4f2f88960a78f6e2871d06ee60
diff --git a/build_teaspeak.sh b/build_teaspeak.sh
index f98e71c..6b3982e 100755
--- a/build_teaspeak.sh
+++ b/build_teaspeak.sh
@@ -44,7 +44,9 @@ mkdir build || exit 1
 cd build || exit 1
 
 echo "Build type: $_build_type"
-cmake .. -DCMAKE_BUILD_TYPE="$_build_type" -DCMAKE_CXX_FLAGS="${CXX_FLAGS}" -DBUILD_INCLUDE_FILE="$_build_helper_dir"/cmake/config/tearoot-server.cmake -DCMAKE_MODULE_PATH="$_build_helper_dir/cmake/" -DDISABLE_QT=1 -DDISABLE_CUSTOM_OUTPUT=ON -DDISABLE_QT=ON -DCOMPILE_WEB_CLIENT="$_web_flag" $TEASPEAK_DEPLOY_TYPE_SPECIFIER
+_command="cmake .. -DCMAKE_BUILD_TYPE=\"$_build_type\" -DCMAKE_CXX_FLAGS=\"${CXX_FLAGS}\" -DBUILD_INCLUDE_FILE=\"$_build_helper_dir/cmake/config/tearoot-server.cmake\" -DCMAKE_MODULE_PATH=\"$_build_helper_dir/cmake/\" -DDISABLE_QT=1 -DDISABLE_CUSTOM_OUTPUT=ON -DDISABLE_QT=ON -DCOMPILE_WEB_CLIENT=\"$_web_flag\" $TEASPEAK_DEPLOY_TYPE_SPECIFIER"
+echo "> $_command"
+eval $_command
 _code=$?
 if [[ $_code -ne 0 ]]; then
 	echo "Failed to run CMAKE project"
diff --git a/libraries/build_protobuf.sh b/libraries/build_protobuf.sh
index 1bc3f30..6f6c896 100755
--- a/libraries/build_protobuf.sh
+++ b/libraries/build_protobuf.sh
@@ -14,8 +14,8 @@ requires_rebuild ${library_path}
 
 cd protobuf || exit 1
 # git checkout 3.5.1.1
-[[ ! -d build ]] && { mkdir build || exit 1; }
-cd build || exit 1
+[[ ! -d _build ]] && { mkdir _build || exit 1; }
+cd _build || exit 1
 cmake ../cmake/ -Dprotobuf_BUILD_TESTS=OFF -DCMAKE_CXX_FLAGS="-std=c++11 -fPIC ${CXX_FLAGS}" -DCMAKE_C_FLAGS="${C_FLAGS}" -DCMAKE_BUILD_TYPE=RelWithDebInfo ${CMAKE_OPTIONS} || exit 1
 make ${CMAKE_MAKE_OPTIONS} || exit 1
 sudo make install || exit 1
diff --git a/libraries/spdlog b/libraries/spdlog
index 7227fa7..b7d5647 160000
--- a/libraries/spdlog
+++ b/libraries/spdlog
@@ -1 +1 @@
-Subproject commit 7227fa78ee2432984d721b952dfe05bed35f1fa8
+Subproject commit b7d56470c94c742342f1895621b9ab5505cd8b00
diff --git a/ubuntu_setup_env.sh b/ubuntu_setup_env.sh
new file mode 100644
index 0000000..1fd1178
--- /dev/null
+++ b/ubuntu_setup_env.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+set -e
+
+SSHD_LISTEN_ADDRESS=127.0.0.1
+if [ -e "/dev/vsock" ]; then # in case of WSL2
+	SSHD_LISTEN_ADDRESS=0.0.0.0
+fi
+
+SSHD_PORT=2222
+SSHD_FILE=/etc/ssh/sshd_config
+SUDOERS_FILE=/etc/sudoers
+  
+# 0. update package lists
+sudo apt-get update
+
+# 0.1. reinstall sshd (workaround for initial version of WSL)
+sudo apt remove -y --purge openssh-server
+sudo apt install -y openssh-server
+
+# 0.2. install basic dependencies
+sudo apt install -y cmake gcc clang gdb valgrind build-essential
+
+# 1.1. configure sshd
+sudo cp $SSHD_FILE ${SSHD_FILE}.`date '+%Y-%m-%d_%H-%M-%S'`.back
+sudo sed -i '/^Port/ d' $SSHD_FILE
+sudo sed -i '/^ListenAddress/ d' $SSHD_FILE
+sudo sed -i '/^UsePrivilegeSeparation/ d' $SSHD_FILE
+sudo sed -i '/^PasswordAuthentication/ d' $SSHD_FILE
+echo "# configured by CLion"      | sudo tee -a $SSHD_FILE
+echo "ListenAddress ${SSHD_LISTEN_ADDRESS}"	| sudo tee -a $SSHD_FILE
+echo "Port ${SSHD_PORT}"          | sudo tee -a $SSHD_FILE
+echo "UsePrivilegeSeparation no"  | sudo tee -a $SSHD_FILE
+echo "PasswordAuthentication yes" | sudo tee -a $SSHD_FILE
+# 1.2. apply new settings
+sudo service ssh --full-restart
+  
+# 2. autostart: run sshd 
+sed -i '/^sudo service ssh --full-restart/ d' ~/.bashrc
+echo "%sudo ALL=(ALL) NOPASSWD: /usr/sbin/service ssh --full-restart" | sudo tee -a $SUDOERS_FILE
+cat << 'EOF' >> ~/.bashrc
+sshd_status=$(service ssh status)
+if [[ $sshd_status = *"is not running"* ]]; then
+  sudo service ssh --full-restart
+fi
+EOF
+  
+
+# summary: SSHD config info
+echo 
+echo "SSH server parameters ($SSHD_FILE):"
+echo "ListenAddress ${SSHD_LISTEN_ADDRESS}"
+echo "Port ${SSHD_PORT}"
+echo "UsePrivilegeSeparation no"
+echo "PasswordAuthentication yes"