diff --git a/cmake/QskBuildFunctions.cmake b/cmake/QskBuildFunctions.cmake
index ca679293..ebc20a23 100644
--- a/cmake/QskBuildFunctions.cmake
+++ b/cmake/QskBuildFunctions.cmake
@@ -47,10 +47,16 @@ function(qsk_add_plugin target TYPE CLASS_NAME)
     # So for the moment better don't do:
     #      qt6_add_plugin(${target} SHARED ${CLASS_NAME} )
 
-    if(QT_VERSION_MAJOR VERSION_GREATER_EQUAL 6)
-        qt6_add_library(${target} SHARED )
+    if(BUILD_QSKDLL)
+        set(library_type SHARED)
     else()
-        add_library(${target} SHARED )
+        set(library_type STATIC)
+    endif()
+
+    if(QT_VERSION_MAJOR VERSION_GREATER_EQUAL 6)
+        qt6_add_library(${target} ${library_type})
+    else()
+        add_library(${target} ${library_type})
     endif()
 
     set_target_properties(${target} PROPERTIES
@@ -118,4 +124,10 @@ function(qsk_add_shaders target)
     qt6_add_shaders( ${target} "qskshaders" BATCHABLE PRECOMPILE QUIET
         PREFIX "/qskinny/shaders" ${ARGV} OUTPUTS ${outfiles} )
 
+    # pass on OUTPUT_TARGETS to the caller of this function
+    cmake_parse_arguments(PARSE_ARGV 1 arg "" "OUTPUT_TARGETS" "")
+    if (arg_OUTPUT_TARGETS)
+        set(${arg_OUTPUT_TARGETS} ${${arg_OUTPUT_TARGETS}} PARENT_SCOPE)
+    endif()
+
 endfunction()
diff --git a/qmlexport/CMakeLists.txt b/qmlexport/CMakeLists.txt
index e1b78483..f0ea7541 100644
--- a/qmlexport/CMakeLists.txt
+++ b/qmlexport/CMakeLists.txt
@@ -17,7 +17,12 @@ set(SOURCES
     QskQml.cpp)
 
 set(target qskqmlexport)
-qsk_add_library(${target} SHARED ${SOURCES} ${HEADERS})
+
+if(BUILD_QSKDLL)
+    qsk_add_library(${target} SHARED ${SOURCES} ${HEADERS})
+else()
+    qsk_add_library(${target} STATIC ${SOURCES} ${HEADERS})
+endif()
 
 target_link_libraries(${target} PRIVATE qskinny)
 target_include_directories(${target} PUBLIC 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 87f89b12..29aca47d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -482,17 +482,14 @@ set(target qskinny)
 
 if(BUILD_QSKDLL)
     qsk_add_library(${target} SHARED ${SOURCES} ${HEADERS} ${PRIVATE_HEADERS})
+    target_compile_definitions(${target} PUBLIC QSK_DLL )
+    set_target_properties(${target} PROPERTIES DEFINE_SYMBOL QSK_MAKEDLL)
 else()
     qsk_add_library(${target} STATIC ${SOURCES} ${HEADERS} ${PRIVATE_HEADERS})
 endif()
 
-if(BUILD_QSKDLL)
-    target_compile_definitions(${target} PUBLIC QSK_DLL )
-    set_target_properties(${target} PROPERTIES DEFINE_SYMBOL QSK_MAKEDLL)
-endif()
-
 if (QT_VERSION_MAJOR VERSION_GREATER_EQUAL 6)
-    qsk_add_shaders( ${target} FILES ${SHADERS} )
+    qsk_add_shaders( ${target} FILES ${SHADERS} OUTPUT_TARGETS shader_target)
 endif()
 
 target_include_directories(${target} PUBLIC
@@ -542,8 +539,14 @@ set_target_properties(${target} PROPERTIES
 # packaging
 set(PACKAGE_NAME ${PROJECT_NAME})
 
+set(exported_targets ${target})
+if(NOT BUILD_QSKDLL)
+    list(APPEND exported_targets ${shader_target})
+endif()
+
+
 # setup destination file paths for qskinny target
-install(TARGETS ${target} EXPORT ${PACKAGE_NAME}Targets
+install(TARGETS ${exported_targets} EXPORT ${PACKAGE_NAME}Targets
     LIBRARY DESTINATION       ${QSK_INSTALL_LIBS}
     ARCHIVE DESTINATION       ${QSK_INSTALL_LIBS}
     RUNTIME DESTINATION       ${QSK_INSTALL_LIBS}
diff --git a/src/common/QskMetaFunction.cpp b/src/common/QskMetaFunction.cpp
index 9b3bea0d..45f7e7cb 100644
--- a/src/common/QskMetaFunction.cpp
+++ b/src/common/QskMetaFunction.cpp
@@ -7,7 +7,9 @@
 
 #include <qcoreapplication.h>
 #include <qobject.h>
+#if QT_CONFIG(thread)
 #include <qsemaphore.h>
+#endif
 #include <qthread.h>
 
 QSK_QT_PRIVATE_BEGIN
@@ -188,6 +190,8 @@ void QskMetaFunction::invoke( QObject* object,
             ? Qt::QueuedConnection : Qt::DirectConnection;
     }
 
+    const auto argc = parameterCount() + 1; // return value + arguments
+
     switch ( invokeType )
     {
         case Qt::DirectConnection:
@@ -206,10 +210,13 @@ void QskMetaFunction::invoke( QObject* object,
 
 #if QT_CONFIG(thread)
             QSemaphore semaphore;
-#endif
 
             auto event = new QMetaCallEvent(
                 m_functionCall, nullptr, 0, argv, &semaphore );
+#else
+            auto event = new QMetaCallEvent(
+                m_functionCall, nullptr, 0, argc );
+#endif
 
             QCoreApplication::postEvent( receiver, event );
 
@@ -224,8 +231,6 @@ void QskMetaFunction::invoke( QObject* object,
             if ( receiver.isNull() )
                 return;
 
-            const auto argc = parameterCount() + 1; // return value + arguments
-
             auto event = new QMetaCallEvent( m_functionCall, nullptr, 0, argc );
 
             auto types = event->types();
diff --git a/src/common/QskMetaInvokable.cpp b/src/common/QskMetaInvokable.cpp
index 64c118f0..27828c3b 100644
--- a/src/common/QskMetaInvokable.cpp
+++ b/src/common/QskMetaInvokable.cpp
@@ -9,7 +9,9 @@
 #include <qmetaobject.h>
 #include <qobject.h>
 #include <qcoreapplication.h>
+#if QT_CONFIG(thread)
 #include <qsemaphore.h>
+#endif
 #include <qthread.h>
 
 QSK_QT_PRIVATE_BEGIN
@@ -163,6 +165,12 @@ static void qskInvokeMetaCall(
             ? Qt::QueuedConnection : Qt::DirectConnection;
     }
 
+#if 1
+    // should be doable without QMetaMethod. TODO ...
+    const auto method = metaObject->method( offset + index );
+#endif
+    const int argc = method.parameterCount() + 1;
+
     switch ( invokeType )
     {
         case Qt::DirectConnection:
@@ -194,11 +202,15 @@ static void qskInvokeMetaCall(
 
 #if QT_CONFIG(thread)
             QSemaphore semaphore;
-#endif
 
             auto event = new MetaCallEvent( call, metaObject,
                 offset, index, args, &semaphore );
 
+#else
+            auto event = new MetaCallEvent( call, metaObject,
+                offset, index, argc );
+#endif
+
             QCoreApplication::postEvent( receiver, event );
 
 #if QT_CONFIG(thread)
@@ -216,12 +228,6 @@ static void qskInvokeMetaCall(
 
             if ( call == QMetaObject::InvokeMetaMethod )
             {
-#if 1
-                // should be doable without QMetaMethod. TODO ...
-                const auto method = metaObject->method( offset + index );
-#endif
-                const int argc = method.parameterCount() + 1;
-
                 event = new MetaCallEvent( call, metaObject, offset, index, argc );
 
                 /*
diff --git a/src/nodes/QskTreeNode.cpp b/src/nodes/QskTreeNode.cpp
index a3f70f23..82f4c5eb 100644
--- a/src/nodes/QskTreeNode.cpp
+++ b/src/nodes/QskTreeNode.cpp
@@ -5,7 +5,7 @@
 
 #include "QskTreeNode.h"
 
-static constexpr auto extraFlag =
+static const auto extraFlag =
     static_cast< QSGNode::Flag >( QSGNode::IsVisitableNode << 1 );
 
 static inline QSGNode* qskCheckedNode( const QSGNode* node, QSGNode::NodeType type )