Add build test for missing modules

.github/workflows/main.yml

@@ -19,6 +19,10 @@ jobs:
     strategy:
      matrix:
        qtversion: [5.14.2, 6.8.*]
+       configflags: ['minimal', '']
+       exclude:
+        - qtversion: 6.8.*
+          configflags: 'minimal'
     runs-on: ubuntu-latest
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
@@ -32,7 +36,7 @@ jobs:
           cache: 'true'
 
       - name: Configure
-        run: qmake porymap.pro
+        run: qmake porymap.pro CONFIG+=${{ matrix.configflags}}
 
       - name: Compile
         run: make -j8

porymap.pro

@@ -4,7 +4,7 @@
 #
 #-------------------------------------------------
 
-QT       += core gui
+QT       += core gui widgets
 
 qtHaveModule(charts) {
     QT += charts
@@ -22,7 +22,10 @@ qtHaveModule(network) {
     warning("Qt module 'network' not found, disabling network features.")
 }
 
-greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+# Overwrite the available modules for a minimal build test
+minimal {
+    QT = core gui widgets
+}
 
 TARGET = porymap
 TEMPLATE = app