X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=configure.in;h=e00ce22540c629577869db731f93266361f89432;hb=2c313f6741791123b2dd2d2ef763e53b703abc85;hp=2a9bc24917ad1921dda501899a538ced061363f5;hpb=6c05aa01c6bd9e90542a33f3a2576967a8b940fc;p=ghc-hetmet.git

diff --git a/configure.in b/configure.in
index 2a9bc24..e00ce22 100644
--- a/configure.in
+++ b/configure.in
@@ -847,6 +847,14 @@ else
 fi
 AC_SUBST(LibsReadline)
 
+if test "$HaveLibReadline"; then
+  AC_CHECK_LIB(readline, rl_erase_empty_line,
+    [AC_DEFINE(HAVE_READLINE_4, 1)],
+    [AC_DEFINE(HAVE_READLINE_4, 0)])
+else
+  AC_DEFINE(HAVE_READLINE_4, 0)
+fi
+
 dnl ** check for math library
 FPTOOLS_CHECK_LIBM()
 AC_SUBST(LIBM)