From: Roger Fujii <rmf@lookhere.com>

the new src/lib/ipwd.c introduced in 2.0.12 no longer compiles on solaris. Under solaris, the *_r routines doesn't pass in result as the last parameter and return errno - it just returns result. obviously a job for configure.....

This was solved several Emails back about forcing the use of POSIX threading models (a workaround path is provided):

http://www.dovecot.org/list/dovecot/2011-April/058602.html

Joseph Tam <jtam.home@gmail.com>