1 files changed, 11 insertions, 1 deletions
diff --git a/src/libmain/common-args.hh b/src/libmain/common-args.hh
index 2c0d71edd815..a4de3dccf0a5 100644
--- a/src/libmain/common-args.hh
+++ b/src/libmain/common-args.hh
@@ -12,7 +12,7 @@ struct MixCommonArgs : virtual Args
 
 struct MixDryRun : virtual Args
 {
-    bool dryRun;
+    bool dryRun = false;
 
     MixDryRun()
     {
@@ -20,4 +20,14 @@ struct MixDryRun : virtual Args
     }
 };
 
+struct MixJSON : virtual Args
+{
+    bool json = false;
+
+    MixJSON()
+    {
+        mkFlag(0, "json", "produce JSON output", &json);
+    }
+};
+
 }