From 19c905b4e2593c2a97705ced49f4f017571dbd56 Mon Sep 17 00:00:00 2001
From: Douglas William Thrift <douglas@douglasthrift.net>
Date: Sun, 18 Apr 2010 11:06:27 +0000
Subject: [PATCH] Fail on a lack of readline.

---
 configure    | 6 ++++++
 configure.ac | 1 +
 2 files changed, 7 insertions(+)

diff --git a/configure b/configure
index cff1cbb..627206b 100755
--- a/configure
+++ b/configure
@@ -14774,6 +14774,12 @@ done
     fi
   fi
 
+case $vl_cv_lib_readline in #(
+  no) :
+    as_fn_error "You need readline" "$LINENO" 5 ;; #(
+  *) :
+     ;;
+esac
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
diff --git a/configure.ac b/configure.ac
index 0d9605e..a57a830 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,6 +69,7 @@ AS_CASE([$apr_found], [yes], [
 	AC_SUBST([LTLIBAPR], [`$apr_config --link-libtool`])
 ], [AC_MSG_ERROR([You need apr])])
 VL_LIB_READLINE
+AS_CASE([$vl_cv_lib_readline], [no], [AC_MSG_ERROR([You need readline])])
 AC_LANG_PUSH([C])
 AM_ICONV
 AC_LANG_POP([C])
-- 
2.45.2