Use precompiled headers to speed up build

* Add precompiled headers to Commands, and improve usage
* Use precompiled headers on github action

.github/workflows/ResInsightWithCache.yml

@@ -196,6 +196,7 @@ jobs:
               -D RESINSIGHT_BUNDLE_OPENSSL=true
               -D RESINSIGHT_INCLUDE_APPLICATION_UNIT_TESTS=true
               -D RESINSIGHT_TREAT_WARNINGS_AS_ERRORS=true
+              -D RESINSIGHT_ENABLE_PRECOMPILED_HEADERS=true
               -D RESINSIGHT_ENABLE_UNITY_BUILD=${{ matrix.config.unity-build }}
               -D RESINSIGHT_ENABLE_GRPC=${{ matrix.config.build-python-module }}
               -D RESINSIGHT_GRPC_PYTHON_EXECUTABLE=${{ steps.python-path.outputs.PYTHON_EXECUTABLE }}

ApplicationLibCode/Commands/CMakeLists.txt

@@ -59,6 +59,11 @@ add_library(
   ${COMMAND_MOC_SOURCE_FILES}
 )
 
+if(RESINSIGHT_ENABLE_PRECOMPILED_HEADERS)
+  message("Precompiled Headers is enabled on : ${PROJECT_NAME}")
+  target_precompile_headers(Commands PRIVATE pch.h)
+endif()
+
 target_include_directories(
   ${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
                           ${CMAKE_CURRENT_SOURCE_DIR}/EclipseCommands

ApplicationLibCode/Commands/pch.h

@@ -0,0 +1,33 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2023     Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#include "cafAssert.h"
+#include "cafCmdFeature.h"
+#include "cafFactory.h"
+#include "cafPdmChildArrayField.h"
+#include "cafPdmObject.h"
+#include "cafPdmPtrArrayField.h"
+#include "cafPdmPtrField.h"
+#include "cafPdmUiOrdering.h"
+
+#include <QObject>
+
+#include "RiaApplication.h"
+#include "RimPlotCurve.h"
+#include "RiuMainWindow.h"
+#include "RiuPlotMainWindow.h"

ApplicationLibCode/pch.h

@@ -1,6 +1,6 @@
 ////////////////////////////////////////////////////////////////////////////////
 //
-//  Copyright (C) 2019-     Equinor ASA
+//  Copyright (C) 2023     Equinor ASA
 //
 //  ResInsight is free software: you can redistribute it and/or modify
 //  it under the terms of the GNU General Public License as published by
@@ -20,18 +20,34 @@
 #include "cvfVector3.h"
 
 #include "cafAppEnum.h"
+#include "cafAssert.h"
 #include "cafCmdFeature.h"
+#include "cafFactory.h"
+#include "cafPdmChildArrayField.h"
 #include "cafPdmField.h"
+#include "cafPdmFieldScriptingCapability.h"
 #include "cafPdmObject.h"
+#include "cafPdmPtrArrayField.h"
+#include "cafPdmPtrField.h"
+#include "cafPdmUiOrdering.h"
 #include "cafSelectionManager.h"
 
 #include <QApplication>
+#include <QObject>
 #include <QString>
+#include <QTextStream>
 
 #include <map>
 #include <vector>
 
 #include "RiaApplication.h"
 #include "RiaPreferences.h"
+#include "RimPlotCurve.h"
 #include "RiuMainWindow.h"
 #include "RiuPlotMainWindow.h"
+
+// These files are reported as candidates for PCH file, but including them breaks the Unity build
+// #include "cafViewer.h"
+// #include "RiuViewer.h"
+// #include "cafOpenGLWidget.h"
+// #include <QGLWidget>