Handle clang 10 warnings:

+ fix -Wtautological-bitwise-compare
+ fix -Wimplicit-int-float-conversion
+ fix -Wmisleading-indentation
+ fix -Wrange-loop-construct
+ suppress -Wdeprecated-copy of 3rd party libs

src/Mod/Mesh/App/Core/Approximation.cpp

@@ -29,6 +29,12 @@
 # include <iterator> 
 #endif
 
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wdeprecated-copy")
+# pragma clang diagnostic ignored "-Wdeprecated-copy"
+#endif
+#endif
+
 #include "Approximation.h"
 #include "Elements.h"
 #include "Utilities.h"

src/Mod/Mesh/App/Core/CylinderFit.cpp

@@ -61,6 +61,12 @@
 # include <iterator> 
 #endif
 
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wdeprecated-copy")
+# pragma clang diagnostic ignored "-Wdeprecated-copy"
+#endif
+#endif
+
 #include "CylinderFit.h"
 #include <Base/Console.h>
 #include <Mod/Mesh/App/WildMagic4/Wm4ApprLineFit3.h>

src/Mod/Mesh/App/Core/KDTree.cpp

@@ -28,6 +28,12 @@
 #ifndef _PreComp_
 #endif
 
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wdeprecated-copy")
+# pragma clang diagnostic ignored "-Wdeprecated-copy"
+#endif
+#endif
+
 #include "KDTree.h"
 #include <kdtree++/kdtree.hpp>
 

src/Mod/Mesh/App/Core/SphereFit.cpp

@@ -28,6 +28,12 @@
 # include <iterator> 
 #endif
 
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wdeprecated-copy")
+# pragma clang diagnostic ignored "-Wdeprecated-copy"
+#endif
+#endif
+
 #include "SphereFit.h"
 #include <Base/Console.h>
 

src/Mod/Part/App/GeometryCurvePyImp.cpp

@@ -22,6 +22,13 @@
 
 
 #include "PreCompiled.h"
+
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wdeprecated-copy")
+# pragma clang diagnostic ignored "-Wdeprecated-copy"
+#endif
+#endif
+
 #ifndef _PreComp_
 # include <sstream>
 # include <BRepBuilderAPI_MakeEdge.hxx>

src/Mod/Part/App/GeometrySurfacePyImp.cpp

@@ -22,6 +22,13 @@
 
 
 #include "PreCompiled.h"
+
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wdeprecated-copy")
+# pragma clang diagnostic ignored "-Wdeprecated-copy"
+#endif
+#endif
+
 #ifndef _PreComp_
 # include <BRepBuilderAPI_MakeFace.hxx>
 # include <gp_Circ.hxx>

src/Mod/ReverseEngineering/Gui/SegmentationManual.cpp

@@ -151,7 +151,7 @@ static void findGeometry(int minFaces, double tolerance,
 
                 for (auto segmIt : segm) {
                     const std::vector<MeshCore::MeshSegment>& data = segmIt->GetSegments();
-                    for (const auto dataIt : data) {
+                    for (const auto& dataIt : data) {
                         vpm->addSelection(dataIt);
                     }
                 }

src/Mod/Robot/App/CMakeLists.txt

@@ -125,6 +125,12 @@ SOURCE_GROUP("Module" FILES ${Mod_SRCS})
 add_library(Robot SHARED ${Robot_SRCS})
 target_link_libraries(Robot ${Robot_LIBS})
 
+unset(_flag_found CACHE)
+check_cxx_compiler_flag("-Wno-deprecated-copy" _flag_found)
+if (_flag_found)
+  target_compile_options(Robot PRIVATE -Wno-deprecated-copy)
+endif()
+
 SET_BIN_DIR(Robot Robot /Mod/Robot)
 SET_PYTHON_PREFIX_SUFFIX(Robot)
 

src/Mod/Robot/Gui/CMakeLists.txt

@@ -156,6 +156,12 @@ SET(RobotGuiIcon_SVG
 add_library(RobotGui SHARED ${RobotGui_SRCS} ${RobotGuiIcon_SVG})
 target_link_libraries(RobotGui ${RobotGui_LIBS})
 
+unset(_flag_found CACHE)
+check_cxx_compiler_flag("-Wno-deprecated-copy" _flag_found)
+if (_flag_found)
+    target_compile_options(RobotGui PRIVATE -Wno-deprecated-copy)
+endif ()
+
 
 SET_BIN_DIR(RobotGui RobotGui /Mod/Robot)
 SET_PYTHON_PREFIX_SUFFIX(RobotGui)

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

@@ -25,6 +25,12 @@
 #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

@@ -24,6 +24,12 @@
 #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>