smartctl.cpp: Add 'smartctl.pre_release' boolean to JSON output.

git-svn-id: https://svn.code.sf.net/p/smartmontools/code/trunk@5354 4ea69e1a-61f1-4043-bf83-b5c94c648137

smartmontools/ChangeLog

@@ -2,6 +2,8 @@ $Id$
 
 2022-04-22  Christian Franke  <franke@computer.org>
 
+	smartctl.cpp: Add 'smartctl.pre_release' boolean to JSON output.
+
 	drivedb.h:
 	- Phison Driven SSDs: PNY ELITE (#1573)
 	- USB: PNY (0x154b:0xf009) (#1573)

smartmontools/smartctl.cpp

@@ -4,7 +4,7 @@
  * Home page of code is: https://www.smartmontools.org
  *
  * Copyright (C) 2002-11 Bruce Allen
- * Copyright (C) 2008-21 Christian Franke
+ * Copyright (C) 2008-22 Christian Franke
  * Copyright (C) 2000 Michael Cornwell <cornwell@acm.org>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
@@ -89,6 +89,11 @@ static void js_initialize(int argc, char **argv, bool verbose)
   if (ver[2] > 0)
     jref["version"][2] = ver[2];
 
+#ifdef SMARTMONTOOLS_RELEASE_DATE
+  jref["pre_release"] = false;
+#else
+  jref["pre_release"] = true;
+#endif
 #ifdef SMARTMONTOOLS_SVN_REV
   jref["svn_revision"] = SMARTMONTOOLS_SVN_REV;
 #endif