Enabled use of libedit as alternative to libreadline

libisoburn/trunk/xorriso/configure_ac.txt

@@ -174,9 +174,29 @@ dnl The X= in the yes case prevents that -lreadline gets linked twice
 else
     READLINE_DEF=
 fi
+if test x$READLINE_DEF = x; then
+    AH_TEMPLATE([Xorriso_with_editlinE],
+                [Define to use libedit if not libreadline])
+    AC_ARG_ENABLE(libedit,
+    [  --enable-libedit    Enable use of libedit by xorriso if not libreadline, default=yes],
+                   , enable_libedit=yes)
+    if test x$enable_libedit = xyes; then
+dnl Check whether there is development and runtime support.
+dnl If not, erase this macro which would enable use of el_*(), history*()
+        READLINE_DEF="-DXorriso_with_editlinE"
+
+        LIBBURNIA_ASSERT_EDITLINE
+
+    else
+        READLINE_DEF=
+    fi
+fi
 if test x$READLINE_DEF = x-DXorriso_with_readlinE
 then
     AC_DEFINE([Xorriso_with_readlinE], [])
+elif test x$READLINE_DEF = x-DXorriso_with_editlinE
+then
+    AC_DEFINE([Xorriso_with_editlinE], [])
 fi
 
 AH_TEMPLATE([Libisofs_with_aaip_acL], [Define to use ACL capabilities])