Description: link the openglrenderer plugin with -latomic on riscv64
 Otherwise it fails to build with the following error:
 /usr/bin/ld: .obj/renderview.o: in function `QHash<int, Qt3DRender::Render::OpenGL::RenderView::StandardUniform>::findNode(int const&, unsigned int) const':
 /usr/include/riscv64-linux-gnu/qt5/QtCore/qhash.h:931: undefined reference to `__atomic_exchange_1'
Author: Dmitry Shachnev <mitya57@debian.org>
Forwarded: no
Last-Update: 2020-10-30

--- a/src/plugins/renderers/opengl/opengl.pri
+++ b/src/plugins/renderers/opengl/opengl.pri
@@ -39,3 +39,5 @@ qtConfig(qt3d-simd-sse2):!qtConfig(qt3d-
     CONFIG += simd
     QMAKE_CXXFLAGS += $$QMAKE_CFLAGS_SSE2
 }
+
+isEqual(QT_ARCH, "riscv64"): QMAKE_LIBS += -latomic