clang/gcc/cmake: [skip ci] suppress deprecated-copy warnings for OpenInventor class SbMatrix

src/Mod/Mesh/Gui/CMakeLists.txt

@@ -170,6 +170,13 @@ SET(MeshGuiIcon_SVG
     Resources/icons/MeshWorkbench.svg
 )
 
+# Suppress this warning for the SbMatrix class
+if (EIGEN3_NO_DEPRECATED_COPY)
+    set_source_files_properties(
+        SoFCIndexedFaceSet.cpp
+        PROPERTIES COMPILE_FLAGS ${EIGEN3_NO_DEPRECATED_COPY})
+endif ()
+
 add_library(MeshGui SHARED ${MeshGui_SRCS} ${MeshGuiIcon_SVG})
 target_link_libraries(MeshGui ${MeshGui_LIBS})