Fix build with -no-feature-settings

Change-Id: I3667e087b13fba6f9804b76d2d0bed2ffefbddbe
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit a36782cfe8)
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/core/CMakeLists.txt

@@ -15,8 +15,6 @@ qt_internal_add_qml_module(QmlCore
         qqmlstandardpaths_p.h
         qqmlstandardpaths.cpp
         qqmlcoreglobal_p.h
-        qqmlsettings_p.h
-        qqmlsettings.cpp
     DEFINES
         QT_BUILD_QML_CORE_LIB
     PUBLIC_LIBRARIES
@@ -26,6 +24,12 @@ qt_internal_add_qml_module(QmlCore
     GENERATE_PRIVATE_CPP_EXPORTS
 )
 
+qt_internal_extend_target(QmlCore CONDITION QT_FEATURE_settings
+    SOURCES
+        qqmlsettings_p.h
+        qqmlsettings.cpp
+)
+
 qt_internal_add_docs(QmlCore
     doc/qtqmlcore.qdocconf
 )

src/quickcontrols/imagine/qquickimaginestyle.cpp

@@ -3,7 +3,9 @@
 
 #include "qquickimaginestyle_p.h"
 
+#if QT_CONFIG(settings)
 #include <QtCore/qsettings.h>
+#endif
 #include <QtQuickControls2/private/qquickstyle_p.h>
 
 QT_BEGIN_NAMESPACE

src/quickcontrols/material/qquickmaterialstyle.cpp

@@ -4,7 +4,9 @@
 #include "qquickmaterialstyle_p.h"
 
 #include <QtCore/qdebug.h>
+#if QT_CONFIG(settings)
 #include <QtCore/qsettings.h>
+#endif
 #include <QtQml/qqmlinfo.h>
 #include <QtQuickControls2/private/qquickstyle_p.h>
 

src/quickcontrols/qquickstyle.cpp

@@ -7,7 +7,9 @@
 #include <QtCore/qdir.h>
 #include <QtCore/qfile.h>
 #include <QtCore/qdebug.h>
+#if QT_CONFIG(settings)
 #include <QtCore/qsettings.h>
+#endif
 #include <QtCore/qfileselector.h>
 #include <QtCore/qlibraryinfo.h>
 #include <QtCore/qloggingcategory.h>

src/quickcontrols/universal/qquickuniversalstyle.cpp

@@ -4,7 +4,9 @@
 #include "qquickuniversalstyle_p.h"
 
 #include <QtCore/qdebug.h>
+#if QT_CONFIG(settings)
 #include <QtCore/qsettings.h>
+#endif
 #include <QtQml/qqmlinfo.h>
 #include <QtQuickControls2/private/qquickstyle_p.h>
 

src/quicknativestyle/qstyle/qquickcommonstyle.cpp

@@ -24,7 +24,9 @@
 #include <qtextformat.h>
 #include <qfileinfo.h>
 #include <qdir.h>
+#if QT_CONFIG(settings)
 #include <qsettings.h>
+#endif
 #include <qvariant.h>
 #include <qpixmapcache.h>
 #include <qmatrix4x4.h>

tools/shared/qqmltoolingsettings.cpp

@@ -9,7 +9,9 @@
 #include <QtCore/qdir.h>
 #include <QtCore/qfileinfo.h>
 #include <QtCore/qset.h>
+#if QT_CONFIG(settings)
 #include <QtCore/qsettings.h>
+#endif
 #include <QtCore/qstandardpaths.h>
 
 using namespace Qt::StringLiterals;
@@ -21,6 +23,7 @@ void QQmlToolingSettings::addOption(const QString &name, QVariant defaultValue)
 
 bool QQmlToolingSettings::read(const QString &settingsFilePath)
 {
+#if QT_CONFIG(settings)
     if (!QFileInfo::exists(settingsFilePath))
         return false;
 
@@ -35,10 +38,14 @@ bool QQmlToolingSettings::read(const QString &settingsFilePath)
     m_currentSettingsPath = settingsFilePath;
 
     return true;
+#else
+    return false;
+#endif
 }
 
 bool QQmlToolingSettings::writeDefaults() const
 {
+#if QT_CONFIG(settings)
     const QString path = QFileInfo(u".%1.ini"_s.arg(m_toolName)).absoluteFilePath();
 
     QSettings settings(path, QSettings::IniFormat);
@@ -56,10 +63,14 @@ bool QQmlToolingSettings::writeDefaults() const
 
     qInfo() << "Wrote default settings to" << path;
     return true;
+#else
+    return false;
+#endif
 }
 
 bool QQmlToolingSettings::search(const QString &path)
 {
+#if QT_CONFIG(settings)
     QFileInfo fileInfo(path);
     QDir dir(fileInfo.isDir() ? path : fileInfo.dir());
 
@@ -105,6 +116,7 @@ bool QQmlToolingSettings::search(const QString &path)
     for (const QString &dir : std::as_const(dirs))
         m_seenDirectories[dir] = QString();
 
+#endif
     return false;
 }