diff --git a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.h b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.h
index e0c3244feec..8f55c8df5cb 100644
--- a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.h
+++ b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.h
@@ -33,10 +33,17 @@
 #include <extensionsystem/iplugin.h>
 
 #include <QObject>
+#include <QtGlobal>
+
+#if defined(PLUGIN1_LIBRARY)
+#  define PLUGIN1_EXPORT Q_DECL_EXPORT
+#else
+#  define PLUGIN1_EXPORT Q_DECL_IMPORT
+#endif
 
 namespace Plugin1 {
 
-class MyPlugin1 : public ExtensionSystem::IPlugin
+class PLUGIN1_EXPORT MyPlugin1 : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
 
diff --git a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.pro b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.pro
index 83a6ce845af..3cf7cd4286c 100644
--- a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.pro
+++ b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin1/plugin1.pro
@@ -2,6 +2,7 @@ TEMPLATE = lib
 
 SOURCES += plugin1.cpp
 HEADERS += plugin1.h
+DEFINES += PLUGIN1_LIBRARY
 
 OTHER_FILES = $$PWD/plugin.xml
 
diff --git a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.h b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.h
index ef8bf9449f8..7f7c7e18a47 100644
--- a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.h
+++ b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.h
@@ -33,10 +33,17 @@
 #include <extensionsystem/iplugin.h>
 
 #include <QObject>
+#include <QtGlobal>
+
+#if defined(PLUGIN2_LIBRARY)
+#  define PLUGIN2_EXPORT Q_DECL_EXPORT
+#else
+#  define PLUGIN2_EXPORT Q_DECL_IMPORT
+#endif
 
 namespace Plugin2 {
 
-class MyPlugin2 : public ExtensionSystem::IPlugin
+class PLUGIN2_EXPORT MyPlugin2 : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
 
diff --git a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.pro b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.pro
index 1584db8b9ec..9a53b2ccfbe 100644
--- a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.pro
+++ b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin2/plugin2.pro
@@ -2,6 +2,7 @@ TEMPLATE = lib
 
 SOURCES += plugin2.cpp
 HEADERS += plugin2.h
+DEFINES += PLUGIN2_LIBRARY
 
 OTHER_FILES = $$PWD/plugin.xml
 
diff --git a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.h b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.h
index 62db1c550eb..5b47ebec9f7 100644
--- a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.h
+++ b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.h
@@ -33,10 +33,17 @@
 #include <extensionsystem/iplugin.h>
 
 #include <QObject>
+#include <QtGlobal>
+
+#if defined(PLUGIN3_LIBRARY)
+#  define PLUGIN3_EXPORT Q_DECL_EXPORT
+#else
+#  define PLUGIN3_EXPORT Q_DECL_IMPORT
+#endif
 
 namespace Plugin3 {
 
-class MyPlugin3 : public ExtensionSystem::IPlugin
+class PLUGIN3_EXPORT MyPlugin3 : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
 
diff --git a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.pro b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.pro
index 36fa1612674..7739e7475ef 100644
--- a/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.pro
+++ b/tests/auto/extensionsystem/pluginmanager/circularplugins/plugin3/plugin3.pro
@@ -2,6 +2,7 @@ TEMPLATE = lib
 
 SOURCES += plugin3.cpp
 HEADERS += plugin3.h
+DEFINES += PLUGIN3_LIBRARY
 
 OTHER_FILES = $$PWD/plugin.xml
 
diff --git a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.h b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.h
index c4d08bc9fb9..aa337fd2096 100644
--- a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.h
+++ b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.h
@@ -33,10 +33,17 @@
 #include <extensionsystem/iplugin.h>
 
 #include <QObject>
+#include <QtGlobal>
+
+#if defined(PLUGIN1_LIBRARY)
+#  define PLUGIN1_EXPORT Q_DECL_EXPORT
+#else
+#  define PLUGIN1_EXPORT Q_DECL_IMPORT
+#endif
 
 namespace Plugin1 {
 
-class MyPlugin1 : public ExtensionSystem::IPlugin
+class PLUGIN1_EXPORT MyPlugin1 : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
 
diff --git a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.pro b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.pro
index 7b18c767020..aa16fb809bb 100644
--- a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.pro
+++ b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin1/plugin1.pro
@@ -2,6 +2,7 @@ TEMPLATE = lib
 
 SOURCES += plugin1.cpp
 HEADERS += plugin1.h
+DEFINES += PLUGIN1_LIBRARY
 
 OTHER_FILES = $$PWD/plugin.spec
 
diff --git a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.h b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.h
index cb297f14289..da65f75d099 100644
--- a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.h
+++ b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.h
@@ -33,10 +33,17 @@
 #include <extensionsystem/iplugin.h>
 
 #include <QObject>
+#include <QtGlobal>
+
+#if defined(PLUGIN2_LIBRARY)
+#  define PLUGIN2_EXPORT Q_DECL_EXPORT
+#else
+#  define PLUGIN2_EXPORT Q_DECL_IMPORT
+#endif
 
 namespace Plugin2 {
 
-class MyPlugin2 : public ExtensionSystem::IPlugin
+class PLUGIN2_EXPORT MyPlugin2 : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
 
diff --git a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.pro b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.pro
index 62ff154e415..9a398e95c17 100644
--- a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.pro
+++ b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin2/plugin2.pro
@@ -2,6 +2,7 @@ TEMPLATE = lib
 
 SOURCES += plugin2.cpp
 HEADERS += plugin2.h
+DEFINES += PLUGIN2_LIBRARY
 
 OTHER_FILES = $$PWD/plugin.spec
 
diff --git a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.h b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.h
index 70ba3ebf0a9..5bafe2d41ec 100644
--- a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.h
+++ b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.h
@@ -32,10 +32,17 @@
 #include <extensionsystem/iplugin.h>
 
 #include <QObject>
+#include <QtGlobal>
+
+#if defined(PLUGIN3_LIBRARY)
+#  define PLUGIN3_EXPORT Q_DECL_EXPORT
+#else
+#  define PLUGIN3_EXPORT Q_DECL_IMPORT
+#endif
 
 namespace Plugin3 {
 
-class MyPlugin3 : public ExtensionSystem::IPlugin
+class PLUGIN3_EXPORT MyPlugin3 : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
 
diff --git a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.pro b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.pro
index 914f98a76fb..05f938f8591 100644
--- a/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.pro
+++ b/tests/auto/extensionsystem/pluginmanager/correctplugins1/plugin3/plugin3.pro
@@ -2,6 +2,7 @@ TEMPLATE = lib
 
 SOURCES += plugin3.cpp
 HEADERS += plugin3.h
+DEFINES += PLUGIN3_LIBRARY
 
 OTHER_FILES = $$PWD/plugin.spec