diff --git a/tools/tgs4_scripts/PreCompile.bat b/tools/tgs4_scripts/PreCompile.bat
index 0c944e7adc..fd7f861e69 100644
--- a/tools/tgs4_scripts/PreCompile.bat
+++ b/tools/tgs4_scripts/PreCompile.bat
@@ -1,7 +1,7 @@
 @echo off
 cd /D "%~dp0"
 set TG_BOOTSTRAP_CACHE=%cd%
-IF NOT "%1" == "" (
+IF NOT %1 == "" (
 	rem TGS4: we are passed the game directory on the command line
 	cd %1
 ) ELSE IF EXIST "..\Game\B\tgstation.dmb" (
@@ -11,5 +11,5 @@ IF NOT "%1" == "" (
 	rem TGS3: Otherwise build in Game/B
 	cd ..\Game\B
 )
-set TG_BUILD_TGS_MODE=1
+set CBT_BUILD_MODE=TGS
 tools\build\build
diff --git a/tools/tgs4_scripts/PreCompile.sh b/tools/tgs4_scripts/PreCompile.sh
index 1e26561db6..f21036ab19 100755
--- a/tools/tgs4_scripts/PreCompile.sh
+++ b/tools/tgs4_scripts/PreCompile.sh
@@ -18,9 +18,11 @@ has_git="$(command -v git)"
 has_cargo="$(command -v ~/.cargo/bin/cargo)"
 has_sudo="$(command -v sudo)"
 has_grep="$(command -v grep)"
+has_youtubedl="$(command -v youtube-dl)"
+has_pip3="$(command -v pip3)"
 set -e
 
-# install cargo if needful
+# install cargo if needed
 if ! [ -x "$has_cargo" ]; then
 	echo "Installing rust..."
 	curl https://sh.rustup.rs -sSf | sh -s -- -y
@@ -44,9 +46,8 @@ if ! ( [ -x "$has_git" ] && [ -x "$has_grep" ] && [ -f "/usr/lib/i386-linux-gnu/
 fi
 dpkg --add-architecture i386
 apt-get update
-#apt-get upgrade -y
-apt-get install -y lib32z1 pkg-config libssl-dev:i386 libssl-dev
-#update rust-g
+apt-get install -y lib32z1 pkg-config libssl-dev:i386 libssl-dev libssl1.1:i386
+# update rust-g
 if [ ! -d "rust-g" ]; then
 	echo "Cloning rust-g..."
 	git clone https://github.com/tgstation/rust-g
@@ -65,8 +66,49 @@ env PKG_CONFIG_ALLOW_CROSS=1 ~/.cargo/bin/cargo build --release --target=i686-un
 mv target/i686-unknown-linux-gnu/release/librust_g.so "$1/librust_g.so"
 cd ..
 
+# get dependencies for extools
+apt-get install -y cmake build-essential gcc-multilib g++-multilib cmake wget
+
+# update extools
+if [ ! -d "extools" ]; then
+	echo "Cloning extools..."
+	git clone https://github.com/MCHSL/extools
+	cd extools/byond-extools
+else
+	echo "Fetching extools..."
+	cd extools/byond-extools
+	git fetch
+fi
+
+echo "Deploying extools..."
+git checkout "$EXTOOLS_VERSION"
+if [ -d "build" ]; then
+	rm -R build
+fi
+mkdir build
+cd build
+cmake ..
+make
+mv libbyond-extools.so "$1/libbyond-extools.so"
+cd ../../..
+
+# install or update youtube-dl when not present, or if it is present with pip3,
+# which we assume was used to install it
+if ! [ -x "$has_youtubedl" ]; then
+	echo "Installing youtube-dl with pip3..."
+	if ! [ -x "$has_sudo" ]; then
+		apt-get install -y python3 python3-pip
+	else
+		sudo apt-get install -y python3 python3-pip
+	fi
+	pip3 install youtube-dl
+elif [ -x "$has_pip3" ]; then
+	echo "Ensuring youtube-dl is up-to-date with pip3..."
+	pip3 install youtube-dl -U
+fi
+
 # compile tgui
 echo "Compiling tgui..."
 cd "$1"
 chmod +x tools/bootstrap/node  # Workaround for https://github.com/tgstation/tgstation-server/issues/1167
-env TG_BOOTSTRAP_CACHE="$original_dir" TG_BOOTSTRAP_NODE_LINUX=1 TG_BUILD_TGS_MODE=1 tools/bootstrap/node tools/build/build.js
+env TG_BOOTSTRAP_CACHE="$original_dir" TG_BOOTSTRAP_NODE_LINUX=1 CBT_BUILD_MODE="TGS" tools/bootstrap/node tools/build/build.js
diff --git a/tools/tgs4_scripts/PreSynchronize.bat b/tools/tgs4_scripts/PreSynchronize.bat
old mode 100755
new mode 100644
diff --git a/tools/tgs4_scripts/PreSynchronize.ps1 b/tools/tgs4_scripts/PreSynchronize.ps1
old mode 100755
new mode 100644