From a17eda1fca0f0696d7ed5082287bbbd02faf7eb8 Mon Sep 17 00:00:00 2001
From: sewardj <unknown>
Date: Thu, 26 Apr 2001 11:08:32 +0000
Subject: [PATCH] [project @ 2001-04-26 11:08:32 by sewardj] Detect the
 presence or absence of readline the right way.

---
 ghc/compiler/ghci/InteractiveUI.hs |   19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/ghc/compiler/ghci/InteractiveUI.hs b/ghc/compiler/ghci/InteractiveUI.hs
index 6a7ffa5..e74fc87 100644
--- a/ghc/compiler/ghci/InteractiveUI.hs
+++ b/ghc/compiler/ghci/InteractiveUI.hs
@@ -1,5 +1,5 @@
 -----------------------------------------------------------------------------
--- $Id: InteractiveUI.hs,v 1.62 2001/04/24 13:05:51 simonmar Exp $
+-- $Id: InteractiveUI.hs,v 1.63 2001/04/26 11:08:32 sewardj Exp $
 --
 -- GHC Interactive User Interface
 --
@@ -10,14 +10,9 @@
 {-# OPTIONS -#include "Linker.h" #-}
 module InteractiveUI ( interactiveUI, ghciWelcomeMsg ) where
 
+#include "../includes/config.h"
 #include "HsVersions.h"
 
-#if HAVE_READLINE_4_2 == 1 || HAVE_READLINE_4 == 1
-#undef NO_READLINE
-#else
-#define NO_READLINE
-#endif
-
 import CompManager
 import CmStaticInfo
 import ByteCodeLink
@@ -34,8 +29,8 @@ import Config
 
 import Exception
 import Dynamic
-#ifndef NO_READLINE
-import Readline
+#if HAVE_READLINE_HEADERS && HAVE_READLINE_LIBS
+import Readline 
 #endif
 import IOExts
 
@@ -127,7 +122,7 @@ interactiveUI cmstate mod cmdline_libs = do
 	     Nothing  -> return (cmstate, True, [])
 	     Just m -> cmLoadModule cmstate m
 
-#ifndef NO_READLINE
+#if HAVE_READLINE_HEADERS && HAVE_READLINE_LIBS
    Readline.initialize
 #endif
 
@@ -172,7 +167,7 @@ runGHCi = do
   	     Right hdl -> fileLoop hdl False
 
   -- read commands from stdin
-#ifndef NO_READLINE
+#if HAVE_READLINE_HEADERS && HAVE_READLINE_LIBS
   readlineLoop
 #else
   fileLoop stdin True
@@ -206,7 +201,7 @@ stringLoop (s:ss) = do
 	l  -> do quit <- runCommand l
                  if quit then return () else stringLoop ss
 
-#ifndef NO_READLINE
+#if HAVE_READLINE_HEADERS && HAVE_READLINE_LIBS
 readlineLoop :: GHCi ()
 readlineLoop = do
    st <- getGHCiState
-- 
1.7.10.4