xdl-compiler: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/xdl-compiler - from package: libxr1-dev

You may install the required package with command apt-get install {package}

Error in other languages:
xdl-compiler: bevel nie gevind nie
xdl-compiler: comandă negăsită
xdl-compiler: comando não encontrado
xdl-compiler: commande introuvable
xdl-compiler: command not found
xdl-compiler: käsku ei ole
xdl-compiler: không tìm thấy lệnh
xdl-compiler: komanda nerasta
xdl-compiler: Kommando nicht gefunden.
xdl-compiler: kommandot finns inte
xdl-compiler: komut yok
xdl-compiler: nie znaleziono polecenia
xdl-compiler: níor aimsíodh an t-ordú
xdl-compiler: no se encontró la orden
xdl-compiler: no s'ha trobat l'ordre
xdl-compiler: opdracht niet gevonden
xdl-compiler: parancs nem található
xdl-compiler: perintah tidak ditemukan
xdl-compiler: príkaz nenájdený
xdl-compiler: příkaz nenalezen
xdl-compiler: команда не найдена
xdl-compiler: командата не е открита
xdl-compiler: 命令找不到
xdl-compiler: コマンドが見つかりません