update packaging

packaging/snap/snapcraft.yaml

@@ -10,15 +10,35 @@ confinement: devmode # use 'strict' once you have the right plugs and slots
 
 package-repositories:
   - type: apt
-    ppa: beineri/opt-qt-5.12.9-bionic
+    ppa: beineri/opt-qt-5.12.10-bionic
 
 parts:
   application:
-    plugin: qmake
+    plugin: nil
     source: snap/local/globalprotect-openconnect.tar.gz
-    build-packages:
-      - qtbase5-dev
-      - qttools5-dev
-      - libqt5websockets5-dev
-      - qtwebengine5-dev
+
+    build-packages:
+      - g++
+      - make
+      - libgl1-mesa-dev
+      - qt512base
+      - qt512websockets
+      - qt512webengine
+    
+    stage-packages:
+      - qt512base
+      - qt512websockets
+      - qt512webengine
+
+    override-build: |
+      QT_BASE_DIR=/opt/qt512
+
+      export QTDIR=$QT_BASE_DIR
+      export PATH=$QT_BASE_DIR/bin:$PATH
+      export LD_LIBRARY_PATH=$QT_BASE_DIR/lib/x86_64-linux-gnu:$QT_BASE_DIR/lib:$LD_LIBRARY_PATH
+      export PKG_CONFIG_PATH=$QT_BASE_DIR/lib/pkgconfig:$PKG_CONFIG_PATH
+
+      qmake CONFIG+=release
+      make
+      make install INSTALL_ROOT="${SNAPCRAFT_PART_INSTALL}"