pkgconfig.mpb: command not found

Have You tried accessing the binary with the full path?

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"

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