1 files changed, 29 insertions, 0 deletions
diff --git a/sntp/m4/ntp_sntp.m4 b/sntp/m4/ntp_sntp.m4
new file mode 100644
index 000000000000..a9d405eae38e
--- /dev/null
+++ b/sntp/m4/ntp_sntp.m4
@@ -0,0 +1,29 @@
+dnl ######################################################################
+dnl Common m4sh code SNTP
+AC_DEFUN([NTP_WITHSNTP], [
+
+dnl preset withsntp=no in env to change default to --without-sntp
+AC_MSG_CHECKING([if sntp will be built])
+AC_ARG_WITH(
+    [sntp],
+    [AS_HELP_STRING(
+	[--without-sntp],
+	[- disable building sntp and sntp/tests]
+    )],
+    [],
+    [with_sntp="${withsntp=yes}"]
+)
+case "$with_sntp" in
+ no)
+    SNTP=
+    ;;
+ *)
+    SNTP=sntp
+    ;;
+esac
+AC_SUBST([SNTP])
+AM_CONDITIONAL([BUILD_SNTP], [test -n "$SNTP"])
+AC_MSG_RESULT([$with_sntp])
+
+])dnl
+dnl ======================================================================