Apple ships inadequate dynamic libreadline and libhistory "replacements"
as standard libraries.
-
+20. If you're on a system like SGI Irix, and you get an error about not
+ being able to refer to a dynamic symbol
+ (ld: non-dynamic relocations refer to dynamic symbol PC), add
+ -DNEED_EXTERN_PC to the LOCAL_CFLAGS variable in lib/readline/Makefile.in
+ and rebuild.