copy meta.json on source exports

Author: dromer

Source/Heavy/DPFExporter.h

@@ -205,7 +205,8 @@ class DPFExporter final : public ExporterBase {
         metaJson->setProperty("dpf", metaDPF);
         metaJson->setProperty("nosimd", nosimd);
 
-        args.add("-m" + createMetaJson(metaJson));
+        auto metaJsonFile = createMetaJson(metaJson);
+        args.add("-m" + metaJsonFile);
 
         args.add("-v");
         args.add("-gdpf");
@@ -241,6 +242,11 @@ class DPFExporter final : public ExporterBase {
             DPFGui.copyDirectoryTo(outputFile.getChildFile("dpf-widgets"));
         }
 
+        if (exportType == 3 || exportType == 4) {
+            auto metaFile = File(metaJsonFile);
+            metaFile.copyFileTo(outputFile.getChildFile("meta.json"));
+        }
+
         // Delay to get correct exit code
         Time::waitForMillisecondCounter(Time::getMillisecondCounter() + 300);