clang/gcc/cmake: move handling of suppressed deprecated-copy warnings from source file to CMake file to more easily support gcc 10

src/Mod/Sketcher/App/CMakeLists.txt

@@ -90,7 +90,6 @@ SOURCE_GROUP("Python" FILES ${Python_SRCS})
 
 
 SET(PlaneGCS_SRCS
-    planegcs/qp_eq.h
     planegcs/GCS.cpp
     planegcs/GCS.h
     planegcs/Util.h
@@ -139,6 +138,15 @@ if(FREECAD_USE_PCH)
     ADD_MSVC_PRECOMPILED_HEADER(Sketcher PreCompiled.h PreCompiled.cpp Sketcher_CPP_SRCS)
 endif(FREECAD_USE_PCH)
 
+# Suppress some very long Eigen3 warnings of older versions
+if (EIGEN3_NO_DEPRECATED_COPY)
+    set_source_files_properties(
+        planegcs/GCS.cpp
+        planegcs/SubSystem.cpp
+        planegcs/qp_eq.cpp
+        PROPERTIES COMPILE_FLAGS ${EIGEN3_NO_DEPRECATED_COPY})
+endif ()
+
 
 SET_BIN_DIR(Sketcher Sketcher /Mod/Sketcher)
 SET_PYTHON_PREFIX_SUFFIX(Sketcher)

src/Mod/Sketcher/App/planegcs/GCS.cpp

@@ -25,12 +25,6 @@
 #pragma warning(disable : 4996)
 #endif
 
-#if defined(__clang__) && defined(__has_warning)
-#if __has_warning("-Wdeprecated-copy")
-# pragma clang diagnostic ignored "-Wdeprecated-copy"
-#endif
-#endif
-
 //#define _GCS_DEBUG
 //#define _GCS_DEBUG_SOLVER_JACOBIAN_QR_DECOMPOSITION_TRIANGULAR_MATRIX
 //#define _DEBUG_TO_FILE // Many matrices surpass the report view string size.

src/Mod/Sketcher/App/planegcs/qp_eq.cpp

@@ -24,12 +24,6 @@
 #pragma warning(disable : 4244)
 #endif
 
-#if defined(__clang__) && defined(__has_warning)
-#if __has_warning("-Wdeprecated-copy")
-# pragma clang diagnostic ignored "-Wdeprecated-copy"
-#endif
-#endif
-
 #include <iostream>
 #include <Eigen/QR>