colcon build warnings are suppressed

CMakeLists.txt

@@ -11,6 +11,9 @@ if(NOT CMAKE_CXX_STANDARD)
   set(CMAKE_CXX_STANDARD 14)
 endif()
 
+# Suppress all warnings
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
+
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   add_compile_options(-Wall -Wextra -Wpedantic)
 endif()