log4c-config: 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 CentOS possible default full paths are:

/usr/bin/log4c-config - from package: log4c-devel

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/log4c-config - from package: liblog4c-dev

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

Error in other languages:
log4c-config: bevel nie gevind nie
log4c-config: comandă negăsită
log4c-config: comando não encontrado
log4c-config: commande introuvable
log4c-config: command not found
log4c-config: käsku ei ole
log4c-config: không tìm thấy lệnh
log4c-config: komanda nerasta
log4c-config: Kommando nicht gefunden.
log4c-config: kommandot finns inte
log4c-config: komut yok
log4c-config: nie znaleziono polecenia
log4c-config: níor aimsíodh an t-ordú
log4c-config: no se encontró la orden
log4c-config: no s'ha trobat l'ordre
log4c-config: opdracht niet gevonden
log4c-config: parancs nem található
log4c-config: perintah tidak ditemukan
log4c-config: príkaz nenájdený
log4c-config: příkaz nenalezen
log4c-config: команда не найдена
log4c-config: командата не е открита
log4c-config: 命令找不到
log4c-config: コマンドが見つかりません