Adjust documentation and release workflow to Qt6

.github/workflows/Release_tag_stable.yml

@@ -8,7 +8,7 @@ on:
 jobs:
 
   PC_Application_Ubuntu:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     outputs:
       upload_url: ${{ steps.bump_release.outputs.upload_url }} 
     steps:
@@ -17,7 +17,8 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libusb-1.0-0-dev qt5-default qt5-qmake qtbase5-dev zip
+          sudo apt-get install -y libusb-1.0-0-dev qt6-tools-dev qt6-base-dev zip
+          qtchooser -install qt6 $(which qmake6)
 
       - name: Get app version
         id: id_version
@@ -31,6 +32,7 @@ jobs:
       - name: Build application
         run: |
           cd Software/PC_Application/LibreVNA-GUI
+          export QT_SELECT=qt6
           qmake LibreVNA-GUI.pro
           make -j9
           zip LibreVNA-GUI.zip LibreVNA-GUI
@@ -71,14 +73,14 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
-          version: '5.15.2'
+          version: '6.2.0'
           arch: 'win64_mingw81'
       
       - name: Download libusb
         run: |
           curl -o libusb.7z -L https://github.com/libusb/libusb/releases/download/v1.0.25/libusb-1.0.25.7z
           7z x libusb.7z -r -olibusb
-          Xcopy /E /I /Y libusb\include ..\Qt\5.15.2\mingw81_64\include
+          Xcopy /E /I /Y libusb\include ..\Qt\6.2.0\mingw81_64\include
           Xcopy /E /I /Y libusb\MinGW64\static\libusb-1.0.a Software\PC_Application\LibreVNA-GUI
         shell: cmd
 
@@ -104,10 +106,10 @@ jobs:
           cd Software/PC_Application/LibreVNA-GUI/release
           del *.o *.cpp
           windeployqt.exe .
-          copy ..\..\..\..\..\Qt\5.15.2\mingw81_64\bin\libwinpthread-1.dll .
+          copy ..\..\..\..\..\Qt\6.2.0\mingw81_64\bin\libwinpthread-1.dll .
-          copy ..\..\..\..\..\Qt\5.15.2\mingw81_64\bin\libgcc_s_seh-1.dll .
+          copy ..\..\..\..\..\Qt\6.2.0\mingw81_64\bin\libgcc_s_seh-1.dll .
-          copy "..\..\..\..\..\Qt\5.15.2\mingw81_64\bin\libstdc++-6.dll" .
+          copy "..\..\..\..\..\Qt\6.2.0\mingw81_64\bin\libstdc++-6.dll" .
-          copy ..\..\..\..\..\Qt\5.15.2\mingw81_64\bin\Qt5OpenGL.dll .
+          copy ..\..\..\..\..\Qt\6.2.0\mingw81_64\bin\Qt6OpenGL.dll .
         shell: cmd
 
       - name: Zip app
@@ -136,11 +138,11 @@ jobs:
 
       - name: Install dependencies
         run: |
-          brew install qt@5 libusb pcre
+          brew install qt@6 libusb pcre
           
       - name: Set Environment
         run: |
-          echo "/usr/local/opt/qt@5/bin" >> $GITHUB_PATH
+          echo "/usr/local/opt/qt@6/bin" >> $GITHUB_PATH
           
       - name: Get app version
         id: id_version

Documentation/DeveloperInfo/BuildAndFlash.md

@@ -12,7 +12,7 @@ Creating all the different parts from the source code requires quite a few tools
 ## Building the PC application:
 * Install the required tools (Qt and libusb-1.0):
   ```
-  sudo apt-get install qt5-default qt5-qmake qtbase5-dev libusb-1.0-0-dev 
+  sudo apt-get install libusb-1.0-0-dev qt6-tools-dev qt6-base-dev
   ```
 * Build the application:
   * either:

README.md

@@ -17,7 +17,7 @@ This is the improved version of my [first attempt](https://www.github.com/jankae
 * Download the latest [Release](https://github.com/jankae/LibreVNA/releases) and unpack the zip file
 * Install the required libraries:
 ```console
-sudo apt install libqt5widgets5
+sudo apt install libqt6widgets6
 ```
 * Install the udev rule (otherwise you don't have the permissions to access the USB device):
 ```console

Software/PC_Application/LibreVNA-Test/target_wrapper.bat

@@ -1,10 +1,10 @@
 @echo off
 SetLocal EnableDelayedExpansion
-(set PATH=C:\Qt\5.15.2\mingw81_64\bin;!PATH!)
+(set PATH=C:\Qt\6.2.4\mingw_64\bin;!PATH!)
 if defined QT_PLUGIN_PATH (
-    set QT_PLUGIN_PATH=C:\Qt\5.15.2\mingw81_64\plugins;!QT_PLUGIN_PATH!
+    set QT_PLUGIN_PATH=C:\Qt\6.2.4\mingw_64\plugins;!QT_PLUGIN_PATH!
 ) else (
-    set QT_PLUGIN_PATH=C:\Qt\5.15.2\mingw81_64\plugins
+    set QT_PLUGIN_PATH=C:\Qt\6.2.4\mingw_64\plugins
 )
 %*
 EndLocal