proftpd cannot load mod_vroot

[Maurício Severich]

Greetings,

To use the proftpd-mod-vroot module in the proftpd service, I added to the modules configuration file (/etc/proftpd/modules.conf) the line:

LoadModule mod_vroot.c

Using this setting, proftpd logs now show the error:

proftpd[1061024]: mod_dso/0.5: unable to load 'mod_vroot.c'; check to see if '/usr/lib/proftpd/mod_vroot.la' exists
proftpd[1061024]: fatal: LoadModule: error loading module 'mod_vroot.c': No such file or directory on line 109 of '/etc/proftpd/modules.conf'
proftpd[1061024]: warning: unable to include '/etc/proftpd/modules.conf': Operation not permitted

The package only provides the mod_vroot.so file
$ dpkg -L proftpd-mod-vroot | grep lib
/usr/lib
/usr/lib/proftpd
/usr/lib/proftpd/mod_vroot.so

Additionally, the /etc/proftpd/modules.conf file fails to load due to LoadModule failure.

This issue has also been reported in:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=951916