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Parrot doesn't build with readline support on OpenSolaris because readline needs tgetnum et al. from Solaris' "curses" lib. The configure script tries to fall back to "ncurses" which still fails on OSOL.
Originally http://trac.parrot.org/parrot/ticket/1390 by carlin
1314 byte attachment from carlin
--- config/auto/readline.pm (revision 43076)
+++ config/auto/readline.pm (working copy)
@@ -61,6 +61,7 @@
# a second chance with ncurses
$extra_libs .= ' ';