diff --git a/src/DebugTools/ResourceManager.cpp b/src/DebugTools/ResourceManager.cpp
index 8a8491f55..b13186081 100644
--- a/src/DebugTools/ResourceManager.cpp
+++ b/src/DebugTools/ResourceManager.cpp
@@ -35,7 +35,7 @@
 
 namespace Magnum {
 
-#ifndef _WIN32
+#ifndef CORRADE_TARGET_WINDOWS
 template class ResourceManager<AbstractShaderProgram, Buffer, Mesh, MeshView, DebugTools::ForceRendererOptions, DebugTools::ObjectRendererOptions, DebugTools::ShapeRendererOptions>;
 #else
 template class MAGNUM_DEBUGTOOLS_EXPORT ResourceManager<AbstractShaderProgram, Buffer, Mesh, MeshView, DebugTools::ForceRendererOptions, DebugTools::ObjectRendererOptions, DebugTools::ShapeRendererOptions>;
diff --git a/src/DebugTools/ResourceManager.h b/src/DebugTools/ResourceManager.h
index c83ecd7a2..eecd8c592 100644
--- a/src/DebugTools/ResourceManager.h
+++ b/src/DebugTools/ResourceManager.h
@@ -45,7 +45,7 @@ namespace Magnum {
 
 /** @todo Do the listing in one place, not five thousand! */
 
-#ifndef _WIN32
+#ifndef CORRADE_TARGET_WINDOWS
 extern template ResourceManager<AbstractShaderProgram, Buffer, Mesh, MeshView, DebugTools::ForceRendererOptions, DebugTools::ObjectRendererOptions, DebugTools::ShapeRendererOptions> MAGNUM_DEBUGTOOLS_EXPORT *& ResourceManager<AbstractShaderProgram, Buffer, Mesh, MeshView, DebugTools::ForceRendererOptions, DebugTools::ObjectRendererOptions, DebugTools::ShapeRendererOptions>::internalInstance();
 #else
 extern template class MAGNUM_DEBUGTOOLS_EXPORT ResourceManager<AbstractShaderProgram, Buffer, Mesh, MeshView, DebugTools::ForceRendererOptions, DebugTools::ObjectRendererOptions, DebugTools::ShapeRendererOptions>;
diff --git a/src/Math/Matrix4.h b/src/Math/Matrix4.h
index 12464fc9d..c71dfe634 100644
--- a/src/Math/Matrix4.h
+++ b/src/Math/Matrix4.h
@@ -31,7 +31,7 @@
 #include "Math/Matrix.h"
 #include "Math/Vector4.h"
 
-#ifdef _WIN32 /* I so HATE windef.h */
+#ifdef CORRADE_TARGET_WINDOWS /* I so HATE windef.h */
 #undef near
 #undef far
 #endif
diff --git a/src/Platform/Sdl2Application.h b/src/Platform/Sdl2Application.h
index 50e9339bf..2f460a1f5 100644
--- a/src/Platform/Sdl2Application.h
+++ b/src/Platform/Sdl2Application.h
@@ -34,7 +34,7 @@
 #include "Math/Vector2.h"
 #include "Magnum.h"
 
-#ifdef _WIN32 /* Windows version of SDL2 redefines main(), we don't want that */
+#ifdef CORRADE_TARGET_WINDOWS /* Windows version of SDL2 redefines main(), we don't want that */
 #define SDL_MAIN_HANDLED
 #endif
 #include <SDL.h>
diff --git a/src/SceneGraph/AbstractCamera.h b/src/SceneGraph/AbstractCamera.h
index 981ca9ea1..eb2a66ae4 100644
--- a/src/SceneGraph/AbstractCamera.h
+++ b/src/SceneGraph/AbstractCamera.h
@@ -209,7 +209,7 @@ typedef AbstractBasicCamera3D<Float> AbstractCamera3D;
 typedef AbstractCamera<3, Float> AbstractCamera3D;
 #endif
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractCamera<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractCamera<3, Float>;
 #endif
diff --git a/src/SceneGraph/AbstractFeature.h b/src/SceneGraph/AbstractFeature.h
index 4959fd631..5580afa9c 100644
--- a/src/SceneGraph/AbstractFeature.h
+++ b/src/SceneGraph/AbstractFeature.h
@@ -341,7 +341,7 @@ typedef AbstractBasicFeature3D<Float> AbstractFeature3D;
 typedef AbstractFeature<3, Float> AbstractFeature3D;
 #endif
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractFeature<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractFeature<3, Float>;
 #endif
diff --git a/src/SceneGraph/AbstractObject.h b/src/SceneGraph/AbstractObject.h
index 42228f852..ffe781a70 100644
--- a/src/SceneGraph/AbstractObject.h
+++ b/src/SceneGraph/AbstractObject.h
@@ -277,7 +277,7 @@ typedef AbstractBasicObject3D<Float> AbstractObject3D;
 typedef AbstractObject<3, Float> AbstractObject3D;
 #endif
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractObject<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractObject<3, Float>;
 #endif
diff --git a/src/SceneGraph/AbstractTransformation.h b/src/SceneGraph/AbstractTransformation.h
index 33e74ab09..0ba971d82 100644
--- a/src/SceneGraph/AbstractTransformation.h
+++ b/src/SceneGraph/AbstractTransformation.h
@@ -144,7 +144,7 @@ typedef AbstractBasicTransformation3D<Float> AbstractTransformation3D;
 typedef AbstractTransformation<3, Float> AbstractTransformation3D;
 #endif
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractTransformation<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractTransformation<3, Float>;
 #endif
diff --git a/src/SceneGraph/Animable.h b/src/SceneGraph/Animable.h
index 6da6a2d5a..453d6def2 100644
--- a/src/SceneGraph/Animable.h
+++ b/src/SceneGraph/Animable.h
@@ -380,7 +380,7 @@ typedef BasicAnimable3D<Float> Animable3D;
 typedef Animable<3, Float> Animable3D;
 #endif
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Animable<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT Animable<3, Float>;
 #endif
diff --git a/src/SceneGraph/AnimableGroup.h b/src/SceneGraph/AnimableGroup.h
index da42aaa6f..d88623fb9 100644
--- a/src/SceneGraph/AnimableGroup.h
+++ b/src/SceneGraph/AnimableGroup.h
@@ -118,7 +118,7 @@ typedef BasicAnimableGroup3D<Float> AnimableGroup3D;
 typedef AnimableGroup<3, Float> AnimableGroup3D;
 #endif
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT AnimableGroup<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT AnimableGroup<3, Float>;
 #endif
diff --git a/src/SceneGraph/Camera2D.h b/src/SceneGraph/Camera2D.h
index 09183c9ef..610af6419 100644
--- a/src/SceneGraph/Camera2D.h
+++ b/src/SceneGraph/Camera2D.h
@@ -105,7 +105,7 @@ template<class T> class BasicCamera2D: public AbstractCamera<2, T> {
 */
 typedef BasicCamera2D<Float> Camera2D;
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT BasicCamera2D<Float>;
 #endif
 
diff --git a/src/SceneGraph/Camera3D.h b/src/SceneGraph/Camera3D.h
index 8b126458b..d6744d953 100644
--- a/src/SceneGraph/Camera3D.h
+++ b/src/SceneGraph/Camera3D.h
@@ -30,7 +30,7 @@
 
 #include "AbstractCamera.h"
 
-#ifdef _WIN32 /* I so HATE windef.h */
+#ifdef CORRADE_TARGET_WINDOWS /* I so HATE windef.h */
 #undef near
 #undef far
 #endif
@@ -141,7 +141,7 @@ template<class T> class BasicCamera3D: public AbstractCamera<3, T> {
 */
 typedef BasicCamera3D<Float> Camera3D;
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT BasicCamera3D<Float>;
 #endif
 
diff --git a/src/SceneGraph/DualComplexTransformation.h b/src/SceneGraph/DualComplexTransformation.h
index 6037fab9e..e5302af2f 100644
--- a/src/SceneGraph/DualComplexTransformation.h
+++ b/src/SceneGraph/DualComplexTransformation.h
@@ -183,7 +183,7 @@ template<class T> struct Transformation<BasicDualComplexTransformation<T>> {
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<BasicDualComplexTransformation<Float>>;
 #endif
 
diff --git a/src/SceneGraph/DualQuaternionTransformation.h b/src/SceneGraph/DualQuaternionTransformation.h
index f94e29d82..6a39c8d5b 100644
--- a/src/SceneGraph/DualQuaternionTransformation.h
+++ b/src/SceneGraph/DualQuaternionTransformation.h
@@ -200,7 +200,7 @@ template<class T> struct Transformation<BasicDualQuaternionTransformation<T>> {
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<BasicDualQuaternionTransformation<Float>>;
 #endif
 
diff --git a/src/SceneGraph/FeatureGroup.h b/src/SceneGraph/FeatureGroup.h
index 039896356..5934020fc 100644
--- a/src/SceneGraph/FeatureGroup.h
+++ b/src/SceneGraph/FeatureGroup.h
@@ -182,7 +182,7 @@ template<UnsignedInt dimensions, class Feature, class T> FeatureGroup<dimensions
     return *this;
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractFeatureGroup<2, Float>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT AbstractFeatureGroup<3, Float>;
 #endif
diff --git a/src/SceneGraph/MatrixTransformation2D.h b/src/SceneGraph/MatrixTransformation2D.h
index d3b4f03dc..db6e238a8 100644
--- a/src/SceneGraph/MatrixTransformation2D.h
+++ b/src/SceneGraph/MatrixTransformation2D.h
@@ -168,7 +168,7 @@ template<class T> struct Transformation<BasicMatrixTransformation2D<T>> {
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<BasicMatrixTransformation2D<Float>>;
 #endif
 
diff --git a/src/SceneGraph/MatrixTransformation3D.h b/src/SceneGraph/MatrixTransformation3D.h
index b6adc33d2..f1d0d01e6 100644
--- a/src/SceneGraph/MatrixTransformation3D.h
+++ b/src/SceneGraph/MatrixTransformation3D.h
@@ -216,7 +216,7 @@ template<class T> struct Transformation<BasicMatrixTransformation3D<T>> {
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<BasicMatrixTransformation3D<Float>>;
 #endif
 
diff --git a/src/SceneGraph/RigidMatrixTransformation2D.h b/src/SceneGraph/RigidMatrixTransformation2D.h
index 072015013..e89ada21a 100644
--- a/src/SceneGraph/RigidMatrixTransformation2D.h
+++ b/src/SceneGraph/RigidMatrixTransformation2D.h
@@ -202,7 +202,7 @@ template<class T> struct Transformation<BasicRigidMatrixTransformation2D<T>> {
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<BasicRigidMatrixTransformation2D<Float>>;
 #endif
 
diff --git a/src/SceneGraph/RigidMatrixTransformation3D.h b/src/SceneGraph/RigidMatrixTransformation3D.h
index 0ada0a0af..fa25cdcc5 100644
--- a/src/SceneGraph/RigidMatrixTransformation3D.h
+++ b/src/SceneGraph/RigidMatrixTransformation3D.h
@@ -255,7 +255,7 @@ template<class T> struct Transformation<BasicRigidMatrixTransformation3D<T>> {
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<BasicRigidMatrixTransformation3D<Float>>;
 #endif
 
diff --git a/src/SceneGraph/TranslationTransformation.h b/src/SceneGraph/TranslationTransformation.h
index 3d63d484c..917ecc4dd 100644
--- a/src/SceneGraph/TranslationTransformation.h
+++ b/src/SceneGraph/TranslationTransformation.h
@@ -206,7 +206,7 @@ template<UnsignedInt dimensions, class T, class TranslationType> struct Transfor
 
 }
 
-#ifdef _WIN32
+#ifdef CORRADE_TARGET_WINDOWS
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<TranslationTransformation<2, Float>>;
 extern template class MAGNUM_SCENEGRAPH_EXPORT Object<TranslationTransformation<3, Float>>;
 #endif
diff --git a/src/SceneGraph/instantiation.cpp b/src/SceneGraph/instantiation.cpp
index b04fd0964..079199ddc 100644
--- a/src/SceneGraph/instantiation.cpp
+++ b/src/SceneGraph/instantiation.cpp
@@ -39,7 +39,7 @@
 namespace Magnum { namespace SceneGraph {
 
 /* On Windows the instantiations are already marked with extern template */
-#ifndef _WIN32
+#ifndef CORRADE_TARGET_WINDOWS
 #define MAGNUM_SCENEGRAPH_EXPORT_HPP MAGNUM_SCENEGRAPH_EXPORT
 #else
 #define MAGNUM_SCENEGRAPH_EXPORT_HPP