I got an error below in UIM rev. 2324,

ld32: ERROR 33: Unresolved data symbol "my_forkpty" -- 1st referenced by
uim_fep-uim-fep.o.

For the workaround, it required the following patch:

Index: fep/uim-fep.c
===================================================================
--- fep/uim-fep.c       (revision 2324)
+++ fep/uim-fep.c       (working copy)
@@ -668,7 +668,7 @@
     return pid;
   }
 }
-#elif defined(__svr4__) 
+#elif defined(__svr4__) || (__sgi__)
 static pid_t my_forkpty(int *amaster, struct termios *termp, struct winsize *winp)
 {
   pid_t pid;