First steps for fixing build on CentOS 8 without uitools

src/gsiqt/qt4/qt4.pro

@@ -7,12 +7,16 @@ SUBDIRS = \
   QtXml \
   QtSql \
   QtNetwork \
-  QtDesigner \
-  QtUiTools
+  QtDesigner 
 
 QtGui.depends += QtCore
 QtNetwork.depends += QtCore
 QtSql.depends += QtCore
 QtDesigner.depends += QtCore
 QtXml.depends += QtCore
-QtUiTools.depends += QtCore
+
+contains(QT_MODULES, uitools) {
+  # Not all distributions have uitools
+  SUBDIRS += QtUiTools
+  QtUiTools.depends += QtCore
+}

src/gsiqt/qt5/qt5.pro

@@ -12,8 +12,7 @@ SUBDIRS = \
   QtPrintSupport \
   QtSvg \
   QtXmlPatterns \
-  QtXml \
-  QtUiTools
+  QtXml 
 
 QtGui.depends += QtCore
 QtNetwork.depends += QtCore
@@ -25,4 +24,9 @@ QtPrintSupport.depends += QtCore QtWidgets
 QtSvg.depends += QtCore QtWidgets
 QtXmlPatterns.depends += QtCore
 QtXml.depends += QtCore
-QtUiTools.depends += QtCore
+
+contains(QT_MODULES, uitools) {
+  # Not all distributions have uitools
+  SUBDIRS += QtUiTools
+  QtUiTools.depends += QtCore
+}

src/klayout.pri

@@ -163,15 +163,22 @@ equals(HAVE_QT, "0") {
   QT += core network xml sql
 
   equals(HAVE_QT5, "1") {
-    QT += designer printsupport widgets uitools
+    QT += designer printsupport widgets 
+    contains(QT_MODULES, "uitools") {
+      # not all distributions have uitools
+      QT += uitools
+    }
     equals(HAVE_QTBINDINGS, "1") {
       QT += multimedia multimediawidgets xmlpatterns svg gui
     }
   } else {
-    # questionable: use uitools instead?
     CONFIG += designer uitools
   }
 
+  contains(QT_MODULES, "uitools") {
+    DEFINES += HAVE_QT_UITOOLS
+  }
+
 }
 
 VERSION_STRING = $$KLAYOUT_VERSION

src/klayout_main/klayout_main/klayout.cc

@@ -61,7 +61,6 @@
 # include "gsiQtSvgExternals.h"
 # include "gsiQtNetworkExternals.h"
 # include "gsiQtDesignerExternals.h"
-# include "gsiQtUiToolsExternals.h"
 
 FORCE_LINK_GSI_QTCORE
 FORCE_LINK_GSI_QTGUI
@@ -74,7 +73,11 @@ FORCE_LINK_GSI_QTDESIGNER
 FORCE_LINK_GSI_QTNETWORK
 FORCE_LINK_GSI_QTSQL
 FORCE_LINK_GSI_QTSVG
+
+#if defined(HAVE_QT_UITOOLS)
+#  include "gsiQtUiToolsExternals.h"
 FORCE_LINK_GSI_QTUITOOLS
+#endif
 
 #else
 # define QT_EXTERNAL_BASE(x)

src/klayout_main/klayout_main/klayout_main.pro

@@ -26,6 +26,9 @@ DEPENDPATH += $$QTBASIC_INC
 
 equals(HAVE_QTBINDINGS, "1") {
   LIBS += -lklayout_qtbasic -lklayout_QtGui -lklayout_QtXml -lklayout_QtNetwork -lklayout_QtSql -lklayout_QtDesigner -lklayout_QtUiTools
+  contains(QT_MODULES, uitools) {
+    LIBS += -lklayout_QtUiTools
+  }
   equals(HAVE_QT5, "1") {
     LIBS += -lklayout_QtMultimedia -lklayout_QtPrintSupport -lklayout_QtSvg -lklayout_QtWidgets -lklayout_QtXmlPatterns
   }

src/pymod/QtUiTools/QtUiTools.pro

@@ -8,4 +8,8 @@ SOURCES = \
 
 HEADERS += \
 
-LIBS += -lklayout_QtUiTools -lklayout_QtCore
+LIBS += -lklayout_QtUiTools 
+
+contains(QT_MODULES, uitools) {
+  LIBS += -lklayout_QtCore
+}

src/pymod/QtUiTools/QtUiToolsMain.cc

@@ -26,8 +26,10 @@
 #include "../../gsiqt/qtbasic/gsiQtCoreExternals.h"
 FORCE_LINK_GSI_QTCORE
 
-#include "../../gsiqt/qtbasic/gsiQtUiToolsExternals.h"
+#if defined(HAVE_QT_UITOOLS)
+#  include "../../gsiqt/qtbasic/gsiQtUiToolsExternals.h"
 FORCE_LINK_GSI_QTUITOOLS
+#endif
 
 DEFINE_PYMOD(QtUiTools, "QtUiTools", "KLayout/Qt module 'QtUiTools'")