add missing dependencies

README.md

@@ -59,7 +59,7 @@ curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microso
 sudo install -o root -g root -m 644 microsoft.gpg /usr/share/keyrings/microsoft-archive-keyring.gpg
 sudo sh -c 'echo "deb [arch=amd64,arm64,armhf signed-by=/usr/share/keyrings/microsoft-archive-keyring.gpg] https://packages.microsoft.com/repos/vscode stable main" > /etc/apt/sources.list.d/vscode.list'
 sudo apt update
-sudo apt install code gdb-multiarch ccache clang clangd llvm lld libguestfs-tools libssl-dev trace-cmd python3-pip jsonnet libelf-dev bison bindfs mmdebstrap proot systemtap
+sudo apt install code gdb-multiarch ccache clang clangd llvm lld libguestfs-tools libssl-dev trace-cmd python3-pip jsonnet libelf-dev bison bindfs mmdebstrap proot systemtap flex yacc bc
 ```
 
 For VS Code to keep track of all the files in your kernel source tree: