Use Qt CMake APIs to exclude files from Unity Build

This is a bit of a cleanup, mainly around unity build, and a few other
minor things:

- I replaced the direct inclusion of sources files using
  `set_source_files_properties`, and instead used
  `NO_UNITY_BUILD_SOURCES` when possible. In most cases, they are being
  excluded in their respective `qt_internal_extend_target` but sometimes
  I had to make a new extension.
- In few cases, we had to manually exclude the NO_PCH files, so, I
  instead passed them directly to the NO_PCH_SOURCES which also exclude
  them from the unity build as well.
- Removed a few unnecessary ""

Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: I466576592c1d115a2da4d88672c1e4b9f995f2ed
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

src/corelib/CMakeLists.txt

@@ -315,6 +315,13 @@ qt_internal_add_module(Core
         # despite the fact that appropriate checks are in place to avoid that!
         tools/qshareddata.cpp tools/qshareddata.h
         text/qlocale.cpp text/qlocale.h
+        global/qglobal.cpp  # undef qFatal
+        global/qlogging.cpp # undef qFatal
+        text/qstringconverter.cpp # enum Data
+        tools/qcryptographichash.cpp # KeccakNISTInterface/Final
+    NO_PCH_SOURCES
+        compat/removed_api.cpp
+        global/qsimd.cpp
     DEFINES
         QT_NO_FOREACH
         QT_NO_USING_NAMESPACE
@@ -342,15 +349,6 @@ qt_internal_add_module(Core
 )
 _qt_internal_setup_deploy_support()
 
-set(corelib_no_pch_sources
-    compat/removed_api.cpp
-    global/qsimd.cpp
-)
-
-foreach(src ${corelib_no_pch_sources})
-    qt_update_ignore_pch_source(Core ${src})
-endforeach()
-
 add_dependencies(Core qmodule_pri)
 
 if (NOT QT_NAMESPACE STREQUAL "")
@@ -523,7 +521,6 @@ qt_internal_extend_target(Core CONDITION WIN32
         kernel/qwinregistry.cpp kernel/qwinregistry_p.h
         plugin/qsystemlibrary.cpp plugin/qsystemlibrary_p.h
         thread/qthread_win.cpp
-    # DEFINES # special case: remove
     LIBRARIES
         advapi32
         authz
@@ -541,6 +538,19 @@ qt_internal_extend_target(Core CONDITION WIN32
         userenv
 )
 
+qt_internal_extend_target(Core CONDITION WIN32
+    NO_UNITY_BUILD_SOURCES
+        global/qsimd.cpp # Q_DECL_INIT_PRIORITY
+        serialization/qcborvalue.cpp # various windows.h clashes
+        serialization/qjsoncbor.cpp
+        serialization/qjsonvalue.cpp
+        serialization/qxmlstream.cpp
+        text/qbytearray.cpp
+        text/qlatin1stringmatcher.cpp
+        text/qunicodetools.cpp
+        tools/qhash.cpp # Q_DECL_INIT_PRIORITY
+)
+
 if(NOT WIN32)
     ### Qt7: remove
     # Make qwineventnotifier.h available on non-Windows platforms too for code bases that include
@@ -941,6 +951,8 @@ qt_internal_extend_target(Core CONDITION QT_FEATURE_process AND UNIX
     SOURCES
         ../3rdparty/forkfd/forkfd.h
         io/forkfd_qt.cpp
+    NO_UNITY_BUILD_SOURCES
+        io/forkfd_qt.cpp    # EINTR_LOOP macro clashes
     INCLUDE_DIRECTORIES
         ../3rdparty/forkfd
 )
@@ -1115,6 +1127,8 @@ qt_internal_extend_target(Core CONDITION QT_FEATURE_cborstreamreader
 qt_internal_extend_target(Core CONDITION QT_FEATURE_cborstreamwriter
     SOURCES
         serialization/qcborstreamwriter.cpp serialization/qcborstreamwriter.h
+    NO_UNITY_BUILD_SOURCES
+        serialization/qcborstreamwriter.cpp # CBOR macro clashes
 )
 
 qt_internal_extend_target(Core CONDITION QT_FEATURE_mimetype
@@ -1295,31 +1309,11 @@ set_source_files_properties(
     thread/qmutex_unix.cpp
     PROPERTIES HEADER_FILE_ONLY ON)  # special case: These files are included by qmutex.cpp!
 
-set_source_files_properties(serialization/qcborstreamwriter.cpp # CBOR macro clashes
-                            io/forkfd_qt.cpp # EINTR_LOOP macro clashes
-                            global/qglobal.cpp  # undef qFatal
-                            global/qlogging.cpp # undef qFatal
-                            text/qstringconverter.cpp # enum Data
-                            tools/qcryptographichash.cpp # KeccakNISTInterface/Final
-                            ${corelib_no_pch_sources} # NO_PCH_SOURCES
-                            PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-
 # Remove QT_NO_CAST_TO_ASCII to ensure that the symbols are included in the library.
 if(WIN32)
     get_target_property(defines Core COMPILE_DEFINITIONS)
     list(REMOVE_ITEM defines QT_NO_CAST_TO_ASCII)
     set_target_properties(Core PROPERTIES COMPILE_DEFINITIONS "${defines}")
-
-    set_source_files_properties(global/qsimd.cpp # Q_DECL_INIT_PRIORITY
-                                serialization/qcborvalue.cpp # various windows.h clashes
-                                serialization/qjsoncbor.cpp
-                                serialization/qjsonvalue.cpp
-                                serialization/qxmlstream.cpp
-                                text/qbytearray.cpp
-                                text/qlatin1stringmatcher.cpp
-                                text/qunicodetools.cpp
-                                tools/qhash.cpp # Q_DECL_INIT_PRIORITY
-                                PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
 endif()
 
 qt_internal_apply_gc_binaries_conditional(Core PUBLIC)

src/gui/CMakeLists.txt

@@ -275,7 +275,7 @@ qt_internal_add_module(Gui
     PRIVATE_MODULE_INTERFACE
         Qt::CorePrivate
     NO_PCH_SOURCES
-        "painting/qdrawhelper.cpp"
+        painting/qdrawhelper.cpp
     PRECOMPILED_HEADER
         "kernel/qt_gui_pch.h"
     GENERATE_CPP_EXPORTS
@@ -292,9 +292,6 @@ set(qpdf_resource_files
     "painting/qpdfa_metadata.xml"
 )
 
-set_source_files_properties(painting/qdrawhelper.cpp # NO_PCH_SOURCES
-                            PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-
 if(WIN32 OR (UNIX AND NOT APPLE))
     set_target_properties(Gui PROPERTIES UNITY_BUILD OFF) # X11 define clashes/Windows oddities.
 endif()

src/network/CMakeLists.txt

@@ -379,24 +379,23 @@ qt_internal_extend_target(Network CONDITION QNX PUBLIC_LIBRARIES socket) # speci
 
 qt_internal_extend_target(Network CONDITION SOLARIS PUBLIC_LIBRARIES socket nsl)
 
-if (WIN32)
+qt_internal_extend_target(Network CONDITION WIN32
-    set_source_files_properties(Network # include windows.h (causing clashes with "interface" define)
+    NO_UNITY_BUILD_SOURCES
-                                kernel/qauthenticator.cpp
+        kernel/qauthenticator.cpp
-                                kernel/qdnslookup_win.cpp
+        kernel/qdnslookup_win.cpp
-                                kernel/qhostaddress.cpp
+        kernel/qhostaddress.cpp
-                                kernel/qhostinfo.cpp
+        kernel/qhostinfo.cpp
-                                kernel/qhostinfo_win.cpp
+        kernel/qhostinfo_win.cpp
-                                kernel/qnetconmonitor_win.cpp
+        kernel/qnetconmonitor_win.cpp
-                                kernel/qnetworkinterface_win.cpp
+        kernel/qnetworkinterface_win.cpp
-                                kernel/qnetworkproxy_win.cpp
+        kernel/qnetworkproxy_win.cpp
-                                socket/qabstractsocket.cpp
+        socket/qabstractsocket.cpp
-                                socket/qlocalserver.cpp
+        socket/qlocalserver.cpp
-                                socket/qlocalserver_win.cpp
+        socket/qlocalserver_win.cpp
-                                socket/qlocalsocket_win.cpp
+        socket/qlocalsocket_win.cpp
-                                socket/qnativesocketengine.cpp
+        socket/qnativesocketengine.cpp
-                                socket/qnativesocketengine_win.cpp
+        socket/qnativesocketengine_win.cpp
-                                PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
+)
-endif()
 
 # include the snippet projects for developer-builds
 if(QT_FEATURE_private_tests)

src/opengl/CMakeLists.txt

@@ -33,6 +33,8 @@ qt_internal_add_module(OpenGL
         qopenglvertexarrayobject.cpp qopenglvertexarrayobject.h qopenglvertexarrayobject_p.h
         qopenglwindow.cpp qopenglwindow.h
         qtopenglglobal.h
+    NO_UNITY_BUILD_SOURCES
+        qopengltextureblitter.cpp       # qDebug()<< ambiguities
     DEFINES
         QT_NO_FOREACH
         QT_NO_USING_NAMESPACE
@@ -48,17 +50,14 @@ qt_internal_add_module(OpenGL
     GENERATE_CPP_EXPORTS
 )
 
-# qDebug()<< ambiguities
-set_source_files_properties(qopengltextureblitter.cpp PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-
-if(APPLE)
-    set_source_files_properties(qopenglversionfunctionsfactory.cpp
-                                PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-endif()
-
 ## Scopes:
 #####################################################################
 
+qt_internal_extend_target(OpenGL CONDITION APPLE
+    NO_UNITY_BUILD_SOURCES
+        qopenglversionfunctionsfactory.cpp
+)
+
 qt_internal_extend_target(OpenGL CONDITION QT_FEATURE_opengles2
     SOURCES
         qopenglfunctions_es2.cpp qopenglfunctions_es2.h

src/printsupport/CMakeLists.txt

@@ -59,7 +59,7 @@ qt_internal_extend_target(PrintSupport CONDITION MACOS
         ${FWApplicationServices}
         Cups::Cups
     NO_PCH_SOURCES
-        "platform/macos/qcocoaprintersupport.mm"
+        platform/macos/qcocoaprintersupport.mm
 )
 
 qt_internal_extend_target(PrintSupport CONDITION WIN32
@@ -74,13 +74,9 @@ qt_internal_extend_target(PrintSupport CONDITION WIN32
         comdlg32
         winspool
     NO_PCH_SOURCES
-        "platform/windows/qwindowsprintersupport.cpp"
+        platform/windows/qwindowsprintersupport.cpp
 )
 
-set_source_files_properties(platform/macos/qcocoaprintersupport.mm # NO_PCH_SOURCES
-                            platform/windows/qwindowsprintersupport.cpp
-                            PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-
 qt_internal_extend_target(PrintSupport CONDITION QT_FEATURE_printpreviewwidget
     SOURCES
         kernel/qpaintengine_preview.cpp kernel/qpaintengine_preview_p.h
@@ -188,15 +184,14 @@ qt_internal_extend_target(PrintSupport CONDITION QT_FEATURE_printdialog AND UNIX
         dialogs/qprintpropertieswidget.ui
         dialogs/qprintsettingsoutput.ui
         dialogs/qprintwidget.ui
+    NO_UNITY_BUILD_SOURCES
+        dialogs/qprintdialog_unix.cpp   # Clashes with CUPS headers
     INCLUDE_DIRECTORIES
         ${QtBase_SOURCE_DIR}/src/plugins/printsupport/cups
     ENABLE_AUTOGEN_TOOLS
         uic
 )
 
-# Clashes with CUPS headers
-set_source_files_properties(dialogs/qprintdialog_unix.cpp PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-
 qt_internal_extend_target(PrintSupport CONDITION QT_FEATURE_printpreviewdialog
     SOURCES
         dialogs/qprintpreviewdialog.cpp dialogs/qprintpreviewdialog.h

src/sql/CMakeLists.txt

@@ -38,9 +38,6 @@ qt_internal_add_module(Sql
     GENERATE_CPP_EXPORTS
 )
 
-set_source_files_properties(compat/removed_api.cpp # NO_PCH_SOURCES
-                            PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
-
 ## Scopes:
 #####################################################################
 

src/widgets/CMakeLists.txt

@@ -68,10 +68,10 @@ qt_internal_add_module(Widgets
     GENERATE_CPP_EXPORTS
 )
 
-if(APPLE)
+qt_internal_extend_target(Widgets CONDITION APPLE
-    set_source_files_properties(kernel/qapplication.cpp
+    NO_UNITY_BUILD_SOURCES
-                                PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
+        kernel/qapplication.cpp
-endif()
+)
 
 # Resources:
 set(qstyle_resource_files