X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=acinclude.m4;h=bc4d5b9d37c8a287343a41c447b137c899b2ddb6;hb=refs%2Fbuilds%2F20140212033042%2Fpspp;hp=ee7c9b0be68b98ad8ec071497da577f9cf3c29bd;hpb=6da9ed01e15953f12bc1ba35fbee53a7a7e46da0;p=pspp

diff --git a/acinclude.m4 b/acinclude.m4
index ee7c9b0be6..bc4d5b9d37 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -124,8 +124,9 @@ AC_DEFUN([PSPP_READLINE],
     AC_MSG_CHECKING([how to link with libreadline])
     AC_MSG_RESULT([$LIBREADLINE])
     AC_SEARCH_LIBS([rl_outstream], [readline],
-        AC_DEFINE(HAVE_RL_OUTSTREAM, 1, [Define if the readline library provides rl_outstream.])
-    )
+        AC_DEFINE(HAVE_RL_OUTSTREAM, 1, [Define if the readline library provides rl_outstream.]))
+    AC_SEARCH_LIBS([rl_echo_signal_char], [readline],
+        AC_DEFINE(HAVE_RL_ECHO_SIGNAL_CHAR, 1, [Define if the readline library provides rl_echo_signal_char.]))
   else
     dnl If $LIBREADLINE didn't lead to a usable library, we don't
     dnl need $INCREADLINE either.