Merge #382: Gitian hack so gitian Mac builds notify user about incomp…

…atibility on High Sierra

a2efe3d Gitian Hack (Jon Spock)

Tree-SHA512: 99efdb6894beb9546474bc918c525df3987a5f60a25a92c7f437bec272cb0034fc4e89417a013890cd5d46abfcda5e1652807185f8d252a2174236f66ef0cfa5

src/qt/pivx.cpp

@@ -570,6 +570,18 @@ int main(int argc, char* argv[])
     initTranslations(qtTranslatorBase, qtTranslator, translatorBase, translator);
     uiInterface.Translate.connect(Translate);
 
+#ifdef Q_OS_MAC
+#if __clang_major__ < 4
+    QString s = QSysInfo::kernelVersion();
+    std::string ver_info = s.toStdString();
+    // ver_info will be like 17.2.0 for High Sierra. Check if true and exit if build via cross-compile
+    if (ver_info[0] == '1' && ver_info[1] == '7') {
+        QMessageBox::critical(0, "Unsupported", BitcoinGUI::tr("High Sierra not supported with this build") + QString("\n\n"));
+        ::exit(1);
+    }
+#endif
+#endif
+
     // Show help message immediately after parsing command-line options (for "-lang") and setting locale,
     // but before showing splash screen.
     if (mapArgs.count("-?") || mapArgs.count("-help") || mapArgs.count("-version")) {