ccache: 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/ccache - from package: ccache

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

On Debian possible default full paths are:

/usr/bin/ccache - from package: ccache

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

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