Fix KWIN_BUILD_XRENDER_COMPOSITING build option

platform.cpp

@@ -90,10 +90,12 @@ QPainterBackend *Platform::createQPainterBackend()
     return nullptr;
 }
 
+#ifdef KWIN_HAVE_XRENDER_COMPOSITING
 XRenderBackend *Platform::createXRenderBackend()
 {
     return nullptr;
 }
+#endif
 
 void Platform::prepareShutdown()
 {

platform.h

@@ -42,7 +42,9 @@ class Scene;
 class Screens;
 class ScreenEdges;
 class Toplevel;
+#ifdef KWIN_HAVE_XRENDER_COMPOSITING
 class XRenderBackend;
+#endif
 
 namespace Decoration
 {
@@ -71,7 +73,9 @@ public:
     virtual Screens *createScreens(QObject *parent = nullptr);
     virtual OpenGLBackend *createOpenGLBackend();
     virtual QPainterBackend *createQPainterBackend();
+#ifdef KWIN_HAVE_XRENDER_COMPOSITING
     virtual XRenderBackend *createXRenderBackend();
+#endif
     virtual DmaBufTexture *createDmaBufTexture(const QSize &size) {
         Q_UNUSED(size);
         return nullptr;

platformsupport/scenes/CMakeLists.txt

 add_subdirectory(qpainter)
 add_subdirectory(opengl)
-add_subdirectory(xrender)
+if (KWIN_BUILD_XRENDER_COMPOSITING)
+    add_subdirectory(xrender)
+endif()

plugins/platforms/x11/standalone/CMakeLists.txt

@@ -12,7 +12,6 @@ set(X11PLATFORM_SOURCES
     x11_output.cpp
     x11_platform.cpp
     x11cursor.cpp
-    x11xrenderbackend.cpp
     xfixes_cursor_event_filter.cpp
 )
 
@@ -29,11 +28,16 @@ include_directories(${CMAKE_SOURCE_DIR}/platformsupport/scenes/xrender)
 
 add_library(KWinX11Platform MODULE ${X11PLATFORM_SOURCES})
 set_target_properties(KWinX11Platform PROPERTIES LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/org.kde.kwin.platforms/")
-target_link_libraries(KWinX11Platform eglx11common kwin kwinxrenderutils SceneOpenGLBackend SceneXRenderBackend Qt5::X11Extras XCB::CURSOR KF5::Crash )
+target_link_libraries(KWinX11Platform eglx11common kwin kwinxrenderutils SceneOpenGLBackend Qt5::X11Extras XCB::CURSOR KF5::Crash )
 if (X11_Xinput_FOUND)
     target_link_libraries(KWinX11Platform ${X11_Xinput_LIB})
 endif()
 
+if (KWIN_BUILD_XRENDER_COMPOSITING)
+    target_sources(KWinX11Platform PRIVATE x11xrenderbackend.cpp)
+    target_link_libraries(KWinX11Platform SceneXRenderBackend)
+endif()
+
 if (HAVE_DL_LIBRARY)
     target_link_libraries(KWinX11Platform ${DL_LIBRARY})
 endif()

plugins/platforms/x11/standalone/x11_platform.cpp

@@ -10,7 +10,9 @@
 #include "x11cursor.h"
 #include "edge.h"
 #include "windowselector.h"
+#ifdef KWIN_HAVE_XRENDER_COMPOSITING
 #include "x11xrenderbackend.h"
+#endif
 #include <config-kwin.h>
 #include <kwinconfig.h>
 #if HAVE_EPOXY_GLX
@@ -120,10 +122,12 @@ OpenGLBackend *X11StandalonePlatform::createOpenGLBackend()
     }
 }
 
+#ifdef KWIN_HAVE_XRENDER_COMPOSITING
 XRenderBackend *X11StandalonePlatform::createXRenderBackend()
 {
     return new X11XRenderBackend(this);
 }
+#endif
 
 Edge *X11StandalonePlatform::createScreenEdge(ScreenEdges *edges)
 {

plugins/platforms/x11/standalone/x11_platform.h

@@ -35,7 +35,9 @@ public:
 
     Screens *createScreens(QObject *parent = nullptr) override;
     OpenGLBackend *createOpenGLBackend() override;
+#ifdef KWIN_HAVE_XRENDER_COMPOSITING
     XRenderBackend *createXRenderBackend() override;
+#endif
     Edge *createScreenEdge(ScreenEdges *parent) override;
     void createPlatformCursor(QObject *parent = nullptr) override;
     bool requiresCompositing() const override;