SerialDV: corrected cmake find module and improved main window error messages for SerialDV support

cmake/Modules/FindSerialDV.cmake

@@ -10,7 +10,7 @@ find_path(LIBSERIALDV_INCLUDE_DIR
 set(LIBSERIAL_NAMES ${LIBSERIAL_NAMES} serialdv libserialdv)
 
 find_library(LIBSERIALDV_LIBRARY
-  NAMES ${LIBSERIALDV_NAMES} 
+  NAMES serialdv
   PATHS ${SERIALDV_DIR}/lib
         /usr/lib
         /usr/local/lib

sdrbase/CMakeLists.txt

@@ -255,8 +255,11 @@ if (LIBSERIALDV_FOUND)
         dsp/dvserialworker.h
         dsp/dvserialengine.h
     )
+    message(STATUS "Will have SerialDV support")
     add_definitions(-DDSD_USE_SERIALDV)
     include_directories(${LIBSERIALDV_INCLUDE_DIR})
+else(LIBSERIALDV_FOUND)
+    message(STATUS "No SerialDV support")
 endif(LIBSERIALDV_FOUND)
 
 if (BUILD_DEBIAN)

sdrgui/mainwindow.cpp

@@ -1448,6 +1448,8 @@ void MainWindow::on_action_DV_Serial_triggered(bool checked)
     m_dspEngine->setDVSerialSupport(checked);
 
     if (checked)
+    {
+        if (m_dspEngine->hasDVSerialSupport())
         {
             std::vector<std::string> deviceNames;
             m_dspEngine->getDVSerialNames(deviceNames);
@@ -1455,6 +1457,7 @@ void MainWindow::on_action_DV_Serial_triggered(bool checked)
             if (deviceNames.size() == 0)
             {
                 QMessageBox::information(this, tr("Message"), tr("No DV serial devices found"));
+                qDebug("MainWindow::on_action_DV_Serial_triggered: No DV serial devices found");
             }
             else
             {
@@ -1474,6 +1477,12 @@ void MainWindow::on_action_DV_Serial_triggered(bool checked)
                 QMessageBox::information(this, tr("Message"), tr(deviceNamesStr.c_str()));
             }
         }
+        else
+        {
+            QMessageBox::information(this, tr("Message"), tr("No DV serial support"));
+            qDebug("MainWindow::on_action_DV_Serial_triggered: No DV serial support");
+        }
+    }
 }
 
 void MainWindow::sampleSourceChanged()