diff --git a/modules/juce_graphics/native/juce_mac_CoreGraphicsContext.mm b/modules/juce_graphics/native/juce_mac_CoreGraphicsContext.mm
index cfc2393209..3f87574eaa 100644
--- a/modules/juce_graphics/native/juce_mac_CoreGraphicsContext.mm
+++ b/modules/juce_graphics/native/juce_mac_CoreGraphicsContext.mm
@@ -60,7 +60,11 @@ public:
         CGColorSpaceRelease (colourSpace);
     }
 
-    ~CoreGraphicsPixelData() override;
+    ~CoreGraphicsPixelData() override
+    {
+        freeCachedImageRef();
+        CGContextRelease (context);
+    }
 
     std::unique_ptr<LowLevelGraphicsContext> createLowLevelContext() override
     {
@@ -185,14 +189,6 @@ private:
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CoreGraphicsPixelData)
 };
 
-// The following implementation is outside of the class definition to avoid spurious
-// warning messages when dynamically loading libraries at runtime on macOS
-CoreGraphicsPixelData::~CoreGraphicsPixelData()
-{
-    freeCachedImageRef();
-    CGContextRelease (context);
-}
-
 ImagePixelData::Ptr NativeImageType::create (Image::PixelFormat format, int width, int height, bool clearImage) const
 {
     return *new CoreGraphicsPixelData (format == Image::RGB ? Image::ARGB : format, width, height, clearImage);
diff --git a/modules/juce_graphics/native/juce_mac_Fonts.mm b/modules/juce_graphics/native/juce_mac_Fonts.mm
index 643ce5b197..484a5d3efb 100644
--- a/modules/juce_graphics/native/juce_mac_Fonts.mm
+++ b/modules/juce_graphics/native/juce_mac_Fonts.mm
@@ -586,10 +586,24 @@ public:
         CFRelease (numberRef);
     }
 
-    // The implementation of at least one overridden function needs to be outside
-    // of the class definition to avoid spurious warning messages when dynamically
-    // loading libraries at runtime on macOS...
-    ~OSXTypeface() override;
+    ~OSXTypeface() override
+    {
+        if (attributedStringAtts != nullptr)
+            CFRelease (attributedStringAtts);
+
+        if (fontRef != nullptr)
+        {
+           #if JUCE_MAC && defined (MAC_OS_X_VERSION_10_8) && MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
+            if (dataCopy.getSize() != 0)
+                CTFontManagerUnregisterGraphicsFont (fontRef, nullptr);
+           #endif
+
+            CGFontRelease (fontRef);
+        }
+
+        if (ctFontRef != nullptr)
+            CFRelease (ctFontRef);
+    }
 
     float getAscent() const override                 { return ascent; }
     float getDescent() const override                { return 1.0f - ascent; }
@@ -719,25 +733,6 @@ private:
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OSXTypeface)
 };
 
-OSXTypeface::~OSXTypeface()
-{
-    if (attributedStringAtts != nullptr)
-        CFRelease (attributedStringAtts);
-
-    if (fontRef != nullptr)
-    {
-       #if JUCE_MAC && defined (MAC_OS_X_VERSION_10_8) && MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
-        if (dataCopy.getSize() != 0)
-            CTFontManagerUnregisterGraphicsFont (fontRef, nullptr);
-       #endif
-
-        CGFontRelease (fontRef);
-    }
-
-    if (ctFontRef != nullptr)
-        CFRelease (ctFontRef);
-}
-
 CTFontRef getCTFontFromTypeface (const Font& f)
 {
     if (auto* tf = dynamic_cast<OSXTypeface*> (f.getTypeface()))
diff --git a/modules/juce_gui_basics/layout/juce_TabbedComponent.cpp b/modules/juce_gui_basics/layout/juce_TabbedComponent.cpp
index 7b13a45b9c..8d52d773e7 100644
--- a/modules/juce_gui_basics/layout/juce_TabbedComponent.cpp
+++ b/modules/juce_gui_basics/layout/juce_TabbedComponent.cpp
@@ -56,7 +56,10 @@ namespace TabbedComponentHelpers
 //==============================================================================
 struct TabbedComponent::ButtonBar  : public TabbedButtonBar
 {
-    ButtonBar (TabbedComponent& tabComp, TabbedButtonBar::Orientation o);
+    ButtonBar (TabbedComponent& tabComp, TabbedButtonBar::Orientation o)
+        : TabbedButtonBar (o), owner (tabComp)
+    {
+    }
 
     void currentTabChanged (int newCurrentTabIndex, const String& newTabName)
     {
@@ -83,13 +86,6 @@ struct TabbedComponent::ButtonBar  : public TabbedButtonBar
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ButtonBar)
 };
 
-// The following implementation is outside of the class definition to avoid spurious
-// warning messages when dynamically loading libraries at runtime on macOS
-TabbedComponent::ButtonBar::ButtonBar (TabbedComponent& tabComp, TabbedButtonBar::Orientation o)
-    : TabbedButtonBar (o), owner (tabComp)
-{
-}
-
 //==============================================================================
 TabbedComponent::TabbedComponent (TabbedButtonBar::Orientation orientation)
 {
diff --git a/modules/juce_gui_basics/menus/juce_PopupMenu.cpp b/modules/juce_gui_basics/menus/juce_PopupMenu.cpp
index 5d151656e1..cf871d118e 100644
--- a/modules/juce_gui_basics/menus/juce_PopupMenu.cpp
+++ b/modules/juce_gui_basics/menus/juce_PopupMenu.cpp
@@ -55,7 +55,10 @@ struct HeaderItemComponent  : public PopupMenu::CustomComponent
         setName (name);
     }
 
-    void paint (Graphics& g) override;
+    void paint (Graphics& g) override
+    {
+        getLookAndFeel().drawPopupMenuSectionHeader (g, getLocalBounds(), getName());
+    }
 
     void getIdealSize (int& idealWidth, int& idealHeight) override
     {
@@ -94,7 +97,13 @@ struct ItemComponent  : public Component
         addMouseListener (&parent, false);
     }
 
-    ~ItemComponent() override;
+    ~ItemComponent() override
+    {
+        if (customComp != nullptr)
+            setItem (*customComp, nullptr);
+
+        removeChildComponent (customComp.get());
+    }
 
     void getIdealSize (int& idealWidth, int& idealHeight, const int standardItemHeight)
     {
@@ -264,7 +273,13 @@ struct MenuWindow  : public Component
         getMouseState (Desktop::getInstance().getMainMouseSource()); // forces creation of a mouse source watcher for the main mouse
     }
 
-    ~MenuWindow() override;
+    ~MenuWindow() override
+    {
+        getActiveWindows().removeFirstMatchingValue (this);
+        Desktop::getInstance().removeGlobalMouseListener (this);
+        activeSubMenu.reset();
+        items.clear();
+    }
 
     //==============================================================================
     void paint (Graphics& g) override
@@ -998,7 +1013,14 @@ public:
         startTimerHz (20);
     }
 
-    void handleMouseEvent (const MouseEvent& e);
+    void handleMouseEvent (const MouseEvent& e)
+    {
+        if (! window.windowIsStillValid())
+            return;
+
+        startTimerHz (20);
+        handleMousePosition (e.getScreenPosition());
+    }
 
     void timerCallback() override
     {
@@ -1228,7 +1250,11 @@ struct NormalComponentWrapper : public PopupMenu::CustomComponent
         addAndMakeVisible (comp);
     }
 
-    void getIdealSize (int& idealWidth, int& idealHeight) override;
+    void getIdealSize (int& idealWidth, int& idealHeight) override
+    {
+        idealWidth = width;
+        idealHeight = height;
+    }
 
     void resized() override
     {
@@ -1243,44 +1269,6 @@ struct NormalComponentWrapper : public PopupMenu::CustomComponent
 
 };
 
-// The following implementations are outside of the class definitions to avoid spurious
-// warning messages when dynamically loading libraries at runtime on macOS
-void PopupMenu::HelperClasses::HeaderItemComponent::paint (Graphics& g)
-{
-    getLookAndFeel().drawPopupMenuSectionHeader (g, getLocalBounds(), getName());
-}
-
-PopupMenu::HelperClasses::ItemComponent::~ItemComponent()
-{
-    if (customComp != nullptr)
-        setItem (*customComp, nullptr);
-
-    removeChildComponent (customComp.get());
-}
-
-PopupMenu::HelperClasses::MenuWindow::~MenuWindow()
-{
-    getActiveWindows().removeFirstMatchingValue (this);
-    Desktop::getInstance().removeGlobalMouseListener (this);
-    activeSubMenu.reset();
-    items.clear();
-}
-
-void PopupMenu::HelperClasses::MouseSourceState::handleMouseEvent (const MouseEvent& e)
-{
-    if (! window.windowIsStillValid())
-        return;
-
-    startTimerHz (20);
-    handleMousePosition (e.getScreenPosition());
-}
-
-void PopupMenu::HelperClasses::NormalComponentWrapper::getIdealSize (int& idealWidth, int& idealHeight)
-{
-    idealWidth = width;
-    idealHeight = height;
-}
-
 //==============================================================================
 PopupMenu::PopupMenu (const PopupMenu& other)
     : items (other.items),