Fix building with QT_NO_LIBRARY

If QT_NO_LIBRARY isn't set we cannot test QCoreApplication's library
path functions and none of the plugin and library related tests are
applicable. Also, examples that rely on dynamic plugin loading for
their core functionality obviously don't work.

Change-Id: I2d381ee1bc8d944e1181557895a7e92a364fd778
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

examples/widgets/tools/tools.pro

@@ -18,3 +18,11 @@ SUBDIRS       = \
 contains(DEFINES, QT_NO_TRANSLATION): SUBDIRS -= i18n
 
 plugandpaint.depends = plugandpaintplugins
+
+load(qfeatures)
+contains(QT_DISABLED_FEATURES, library) {
+    SUBDIRS -= \
+        echoplugin \
+        plugandpaintplugins \
+        plugandpaint
+}

tests/auto/corelib/kernel/qcoreapplication/tst_qcoreapplication.cpp

@@ -903,6 +903,7 @@ void tst_QCoreApplication::threadedEventDelivery()
     QCOMPARE(receiver.recordedEvents.contains(QEvent::User + 1), eventsReceived);
 }
 
+#ifndef QT_NO_LIBRARY
 void tst_QCoreApplication::addRemoveLibPaths()
 {
     QStringList paths = QCoreApplication::libraryPaths();
@@ -929,6 +930,7 @@ void tst_QCoreApplication::addRemoveLibPaths()
     QCoreApplication::setLibraryPaths(replace);
     QCOMPARE(QCoreApplication::libraryPaths(), replace);
 }
+#endif
 
 static void createQObjectOnDestruction()
 {

tests/auto/corelib/kernel/qcoreapplication/tst_qcoreapplication.h

@@ -63,7 +63,9 @@ private slots:
     void applicationEventFilters_auxThread();
     void threadedEventDelivery_data();
     void threadedEventDelivery();
+#ifndef QT_NO_LIBRARY
     void addRemoveLibPaths();
+#endif
 };
 
 #endif // TST_QCOREAPPLICATION_H

tests/auto/corelib/plugin/plugin.pro

@@ -1,7 +1,10 @@
 TEMPLATE=subdirs
 SUBDIRS=\
     qfactoryloader \
-    qlibrary \
-    qplugin \
-    qpluginloader \
     quuid
+
+load(qfeatures)
+!contains(QT_DISABLED_FEATURES, library): SUBDIRS += \
+    qpluginloader \
+    qplugin \
+    qlibrary

tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp

@@ -133,9 +133,11 @@ private slots:
     void testDeleteLater();
     void testDeleteLaterProcessEvents();
 
+#ifndef QT_NO_LIBRARY
     void libraryPaths();
     void libraryPaths_qt_plugin_path();
     void libraryPaths_qt_plugin_path_2();
+#endif
 
     void sendPostedEvents();
 
@@ -909,6 +911,7 @@ bool isPathListIncluded(const QStringList &l, const QStringList &r)
     return j == r.count();
 }
 
+#ifndef QT_NO_LIBRARY
 #define QT_TST_QAPP_DEBUG
 void tst_QApplication::libraryPaths()
 {
@@ -1114,6 +1117,7 @@ void tst_QApplication::libraryPaths_qt_plugin_path_2()
         qputenv("QT_PLUGIN_PATH", QByteArray());
     }
 }
+#endif
 
 class SendPostedEventsTester : public QObject
 {