clang/gcc: Add build option FREECAD_WARN_ERROR to force to make warnings into errors

src/Mod/CAM/App/CMakeLists.txt

@@ -17,7 +17,6 @@ include_directories(
 link_directories(${OCC_LIBRARY_DIR})
 
 set(Path_LIBS
-#   Robot
     Part
     area-native
     FreeCADApp
@@ -120,6 +119,9 @@ SOURCE_GROUP("Module" FILES ${Mod_SRCS})
 
 add_library(Path SHARED ${Path_SRCS})
 target_link_libraries(Path ${Path_LIBS})
+if (FREECAD_WARN_ERROR)
+    target_compile_warn_error(Path)
+endif()
 
 # Boost >= 1.75.0
 if(NOT ${Boost_VERSION} LESS 107500)

src/Mod/CAM/Gui/CMakeLists.txt

@@ -85,6 +85,9 @@ SET(PathGuiIcon_SVG
 
 add_library(PathGui SHARED ${PathGui_SRCS} ${PathGuiIcon_SVG})
 target_link_libraries(PathGui ${PathGui_LIBS})
+if (FREECAD_WARN_ERROR)
+    target_compile_warn_error(PathGui)
+endif()
 
 SET_BIN_DIR(PathGui PathGui /Mod/CAM)
 SET_PYTHON_PREFIX_SUFFIX(PathGui)

src/Mod/CAM/PathSimulator/App/CMakeLists.txt

@@ -43,6 +43,9 @@ SOURCE_GROUP("Python" FILES ${Python_SRCS})
 
 add_library(PathSimulator SHARED ${PathSimulator_SRCS})
 target_link_libraries(PathSimulator ${PathSimulator_LIBS})
+if (FREECAD_WARN_ERROR)
+    target_compile_warn_error(PathSimulator)
+endif()
 
 SET_BIN_DIR(PathSimulator PathSimulator /Mod/CAM)
 SET_PYTHON_PREFIX_SUFFIX(PathSimulator)

src/Mod/CAM/PathSimulator/AppGL/CMakeLists.txt

@@ -96,6 +96,9 @@ endif(FREECAD_USE_PCH)
 
 add_library(CAMSimulator SHARED ${CAMSimulator_SRCS})
 target_link_libraries(CAMSimulator ${CAMSimulator_LIBS})
+if (FREECAD_WARN_ERROR)
+    target_compile_warn_error(CAMSimulator)
+endif()
 
 SET_BIN_DIR(CAMSimulator CAMSimulator /Mod/CAM)
 SET_PYTHON_PREFIX_SUFFIX(CAMSimulator)