--- a/configure.in
+++ b/configure.in
@@ -16,6 +16,7 @@
 dnl Checks for libraries.
 dnl Replace `main' with a function in -lncurses:
 AC_CHECK_LIB(ncurses, initscr)
+AC_SEARCH_LIBS(halfdelay, tinfo)
 
 dnl Checks for header files.
 AC_HEADER_STDC