Exit if appDirPath == "/", closes #144

tools/linuxdeployqt/main.cpp

@@ -185,7 +185,7 @@ int main(int argc, char **argv)
     if (QDir().exists(appBinaryPath)) {
         qDebug() << "app-binary:" << appBinaryPath;
     } else {
-        qDebug() << "Error: Could not find app-binary" << appBinaryPath;
+        LogError() << "Error: Could not find app-binary" << appBinaryPath;
         return 1;
     }
 
@@ -199,6 +199,11 @@ int main(int argc, char **argv)
         QString relativePrefix = fhsPrefix.replace(appDirPath+"/", "");
         relativeBinPath = relativePrefix + "/bin/" + appName;
     }
+    if(appDirPath == "/"){
+        LogError() << "'/' is not a valid AppDir. Please refer to the documentation.";
+        LogError() << "Consider adding INSTALL_ROOT or DESTDIR to your install steps.";
+        return 1;
+    }
     qDebug() << "appDirPath:" << appDirPath;
     qDebug() << "relativeBinPath:" << relativeBinPath;