only support append_history if readline has it
diff --git a/Lib/test/test_readline.py b/Lib/test/test_readline.py
index e5be02e..804887a 100644
--- a/Lib/test/test_readline.py
+++ b/Lib/test/test_readline.py
@@ -43,6 +43,8 @@
self.assertEqual(readline.get_current_history_length(), 1)
+ @unittest.skipUnless(hasattr(readline, "append_history"),
+ "append_history not available")
def test_write_read_append(self):
hfile = tempfile.NamedTemporaryFile(delete=False)
hfile.close()
diff --git a/Modules/readline.c b/Modules/readline.c
index b5a0eba..7e0282c 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -237,6 +237,7 @@
The default filename is ~/.history.");
+#ifdef HAVE_RL_APPEND_HISTORY
/* Exported function to save part of a readline history file */
static PyObject *
@@ -270,6 +271,7 @@
"append_history_file(nelements[, filename]) -> None\n\
Append the last nelements of the history list to file.\n\
The default filename is ~/.history.");
+#endif
/* Set history length */
@@ -782,7 +784,9 @@
METH_VARARGS, doc_read_history_file},
{"write_history_file", write_history_file,
METH_VARARGS, doc_write_history_file},
+#ifdef HAVE_RL_APPEND_HISTORY
{"append_history_file", append_history_file,
+#endif
METH_VARARGS, doc_append_history_file},
{"get_history_item", get_history_item,
METH_VARARGS, doc_get_history_item},
diff --git a/configure b/configure
index 4247a78..44a7477 100755
--- a/configure
+++ b/configure
@@ -14529,6 +14529,49 @@
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for append_history in -lreadline" >&5
+$as_echo_n "checking for append_history in -lreadline... " >&6; }
+if ${ac_cv_lib_readline_append_history+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lreadline $READLINE_LIBS $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char append_history ();
+int
+main ()
+{
+return append_history ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_readline_append_history=yes
+else
+ ac_cv_lib_readline_append_history=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_append_history" >&5
+$as_echo "$ac_cv_lib_readline_append_history" >&6; }
+if test "x$ac_cv_lib_readline_append_history" = xyes; then :
+
+$as_echo "#define HAVE_RL_APPEND_HISTORY 1" >>confdefs.h
+
+fi
+
+
# End of readline checks: restore LIBS
LIBS=$LIBS_no_readline
diff --git a/configure.ac b/configure.ac
index 05dc0e6..c12622b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4308,6 +4308,10 @@
[Define if you can turn off readline's signal handling.]), )
fi
+AC_CHECK_LIB(readline, append_history,
+ AC_DEFINE(HAVE_RL_APPEND_HISTORY, 1,
+ [Define if readline supports append_history]), ,$READLINE_LIBS)
+
# End of readline checks: restore LIBS
LIBS=$LIBS_no_readline
diff --git a/pyconfig.h.in b/pyconfig.h.in
index e469f6a..9ebea5d 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -690,6 +690,9 @@
/* Define to 1 if you have the `renameat' function. */
#undef HAVE_RENAMEAT
+/* Define if readline supports append_history */
+#undef HAVE_RL_APPEND_HISTORY
+
/* Define if you have readline 2.1 */
#undef HAVE_RL_CALLBACK