When building Samba 4.4.x to a standard install (/usr/local/samba/), a directory "libexec" is being created which then contains a "samba" directory with the "smbspool_krb5_wrapper" file inside (/usr/local/samba/libexec/samba/ smbspool_krb5_wrapper). This is not very clean, is it? Since all the files are already inside /usr/local/samba, why repeat "samba" again inside the tree? A patch has already been proposed by Andrew Bartlett here: https://lists.samba.org/archive/samba/2016-March/198452.html