+On Solaris, don't put @code{/usr/ucb} early in your @env{PATH}. This
+directory contains several dysfunctional programs; working variants
+of these programs are available in @code{/usr/bin}. So, if you need
+@code{/usr/ucb} in your @env{PATH}, put it @emph{after} @code{/usr/bin}.
+
+On Haiku, software installed for all users goes in @file{/boot/common},
+not @file{/usr/local}. It is recommended to use the following options:
+
+@example
+./configure --prefix=/boot/common
+@end example
+