diff --git a/.github/workflows/driver-cross-build.yml b/.github/workflows/driver-cross-build.yml
index 3f752e8..1008235 100644
--- a/.github/workflows/driver-cross-build.yml
+++ b/.github/workflows/driver-cross-build.yml
@@ -6,16 +6,14 @@ on:
       - master
     paths:
     - '.github/workflows/driver-cross-build.yml'
-    - '.test/bin/**'
-    - '.test/lint.sh'
+    - '.test/**'
     - 'src/drivers/**'
     workflow_dispatch:
   pull_request:
     types: [opened, synchronize]
     paths:
     - '.github/workflows/driver-cross-build.yml'
-    - '.test/bin/**'
-    - '.test/lint.sh'
+    - '.test/**'
     - 'src/drivers/**'
 
 jobs:
diff --git a/.test/step0.sh b/.test/step0.sh
index 5ffb5cd..fc4ce1f 100644
--- a/.test/step0.sh
+++ b/.test/step0.sh
@@ -3,6 +3,7 @@ set -eu
 
 prepare_cross_compiler () {
     GCC_VER="${GCC_VER:-$1}"
+    TAR_NAME="cross-gcc.tar.gz"
     mkdir -p ${HOME}/repo/raspberrypi
 
     echo "==========================================="
@@ -12,52 +13,25 @@ prepare_cross_compiler () {
     dpkg -l | grep libgmp3-dev || sudo apt-get install libgmp3-dev
     dpkg -l | grep libmpc-dev || sudo apt-get install libmpc-dev
 
-    if [ "${GCC_VER}" = "4.8" ]; then
-        if [ -e ${HOME}/repo/raspberrypi/tools ]; then
-            (cd ${HOME}/repo/raspberrypi/tools && git pull)
-        else
-            (cd ${HOME}/repo/raspberrypi && git clone --depth 1 https://github.com/raspberrypi/tools.git)
+    if [ ! -e ${HOME}/repo/raspberrypi/cross-pi-gcc-${GCC_VER}.0-2 ]; then
+        cd ${HOME}/repo/raspberrypi/
+        if [ ! -e ${HOME}/repo/raspberrypi/cross-gcc-${GCC_VER}.0-pi_3+.tar.gz ]; then
+            case "${GCC_VER}" in
+                "6.3")
+                    wget -O ${TAR_NAME} "https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Stretch/GCC%206.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-6.3.0-pi_3%2B.tar.gz"
+                    ;;
+                "8.3")
+                    wget -O ${TAR_NAME} "https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Buster/GCC%208.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-8.3.0-pi_3%2B.tar.gz"
+                    ;;
+                "10.2")
+                    wget -O ${TAR_NAME}  "https://jaist.dl.sourceforge.net/project/raspberry-pi-cross-compilers/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Bullseye/GCC%2010.2.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-10.2.0-pi_3%2B.tar.gz"
+                    ;;
+                "10.3")
+                    wget -O ${TAR_NAME}  "https://jaist.dl.sourceforge.net/project/raspberry-pi-cross-compilers/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Bullseye/GCC%2010.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-10.3.0-pi_3%2B.tar.gz"
+                    ;;
+            esac
         fi
-        export CROSS_COMPILE_PATH="${HOME}/repo/raspberrypi/tools/arm-bcm2708/arm-rpi-4.9.3-linux-gnueabihf/bin/arm-linux-gnueabihf-"
-    fi
-    if [ "${GCC_VER}" = "6.3" ]; then
-        if [ ! -e ${HOME}/repo/raspberrypi/cross-pi-gcc-6.3.0-2 ]; then
-            cd ${HOME}/repo/raspberrypi/
-            if [ ! -e ${HOME}/repo/raspberrypi/cross-gcc-6.3.0-pi_3+.tar.gz ]; then
-                wget --content-disposition "https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Stretch/GCC%206.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-6.3.0-pi_3%2B.tar.gz"
-            fi
-            tar xvf cross-gcc-6.3.0-pi_3+.tar.gz
-        fi
-        export CROSS_COMPILE_PATH="${HOME}/repo/raspberrypi/cross-pi-gcc-6.3.0-2/bin/arm-linux-gnueabihf-"
-    fi
-    if [ "${GCC_VER}" = "8.3" ]; then
-        if [ ! -e ${HOME}/repo/raspberrypi/cross-pi-gcc-8.3.0-2 ]; then
-            cd ${HOME}/repo/raspberrypi/
-            if [ ! -e ${HOME}/repo/raspberrypi/cross-gcc-8.3.0-pi_3+.tar.gz ]; then
-                wget --content-disposition "https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Buster/GCC%208.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-8.3.0-pi_3%2B.tar.gz"
-            fi
-            tar xvf cross-gcc-8.3.0-pi_3+.tar.gz
-        fi
-        export CROSS_COMPILE_PATH="${HOME}/repo/raspberrypi/cross-pi-gcc-8.3.0-2/bin/arm-linux-gnueabihf-"
-    fi
-    if [ "${GCC_VER}" = "10.2" ]; then
-        if [ ! -e ${HOME}/repo/raspberrypi/cross-pi-gcc-10.2.0-2 ]; then
-            cd ${HOME}/repo/raspberrypi/
-            if [ ! -e ${HOME}/repo/raspberrypi/cross-gcc-10.2.0-pi_3+.tar.gz ]; then
-                wget --content-disposition "https://jaist.dl.sourceforge.net/project/raspberry-pi-cross-compilers/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Bullseye/GCC%2010.2.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-10.2.0-pi_3%2B.tar.gz"
-            fi
-            tar xvf cross-gcc-10.2.0-pi_3+.tar.gz
-        fi
-        export CROSS_COMPILE_PATH="${HOME}/repo/raspberrypi/cross-pi-gcc-10.2.0-2/bin/arm-linux-gnueabihf-"
-    fi
-    if [ "${GCC_VER}" = "10.3" ]; then
-        if [ ! -e ${HOME}/repo/raspberrypi/cross-pi-gcc-10.3.0-2 ]; then
-            cd ${HOME}/repo/raspberrypi/
-            if [ ! -e ${HOME}/repo/raspberrypi/cross-gcc-10.3.0-pi_3+.tar.gz ]; then
-                wget --content-disposition "https://jaist.dl.sourceforge.net/project/raspberry-pi-cross-compilers/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Bullseye/GCC%2010.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-10.3.0-pi_3%2B.tar.gz"
-            fi
-            tar xvf cross-gcc-10.3.0-pi_3+.tar.gz
-        fi
-        export CROSS_COMPILE_PATH="${HOME}/repo/raspberrypi/cross-pi-gcc-10.3.0-2/bin/arm-linux-gnueabihf-"
+        tar xvf ${TAR_NAME}
     fi
+    export CROSS_COMPILE_PATH="${HOME}/repo/raspberrypi/cross-pi-gcc-${GCC_VER}.0-2/bin/arm-linux-gnueabihf-"
 }