mklibs-readelf: 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/mklibs-readelf - from package: mklibs-copy

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

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