X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=acinclude.m4;fp=acinclude.m4;h=ee7c9b0be68b98ad8ec071497da577f9cf3c29bd;hb=6da9ed01e15953f12bc1ba35fbee53a7a7e46da0;hp=52ac81acd3dc99e5b16d9405e518227d640fa604;hpb=60fc61091d0f4a706aff2a7b6d7a2a1b0910d7dd;p=pspp

diff --git a/acinclude.m4 b/acinclude.m4
index 52ac81acd3..ee7c9b0be6 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -123,6 +123,9 @@ AC_DEFUN([PSPP_READLINE],
     AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
     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.])
+    )
   else
     dnl If $LIBREADLINE didn't lead to a usable library, we don't
     dnl need $INCREADLINE either.