gsdh_gnustep: 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/gsdh_gnustep - from package: gnustep-make

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

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