[Buildroot] syslog messages during boot not recorded?

[Francesco]

2013/4/8 Gustavo Zacarias <gustavo at zacarias.com.ar>:
> It's a feature of BUSYBOX, not buildroot, meant for syslogd to work in
> scenarios where your /var/log directory isn't writable for example.
> Which begs the question, is it writable?
good point... my /var/log is a symbolic link to /tmp and "ls -l" shows
that its permissions (after system boot) are "drwxrwxrwt".
I think the problem may be due to /tmp being mounted AFTER/AT THE END
of the system boot... in fact, /tmp is a tmpfs... the relevant line in
/etc/fstab is:

     tmpfs           /tmp           tmpfs    defaults          0      0

now my question is: how do I ensure that /tmp is mounted before
/etc/init.d scripts are run?

Thanks a lot!
Francesco