Disable warnings in LLDBWrapPython.cpp when LLVM_ENABLE_WERROR is used

[zturner]

Summary

We don't control the generated code here, so there often isn't anything we can do about these warnings. They'll still show when -Werror is off so they aren't completely silenced.

[labath]

I wouldn't be opposed to completely disabling (a particular chosen set of warnings) for that file, regardless of whether we do -Werror or not.

[Eugene.Zelenko]

You could use -Wno-error=<warning> instead.

[zturner]

In D25246#561323, @Eugene.Zelenko wrote:

You could use -Wno-error=<warning> instead.

Yes but it's a little bit annoying to track down every single one we get in this file with all the different compilers. Since we can't really control the generated code, there's not much we can do. Seems easier to just turn them off.

lldb/trunk/source/API/CMakeLists.txt

add_lldb_library(liblldb SHARED
   SBValueList.cpp
   SBVariablesOptions.cpp
   SBWatchpoint.cpp
   SBUnixSignals.cpp
   SystemInitializerFull.cpp
   ${LLDB_WRAP_PYTHON}
   )
 
+if (LLVM_ENABLE_WERROR)
+  if (MSVC)
+    set_property(SOURCE ${LLDB_WRAP_PYTHON} APPEND_STRING PROPERTY COMPILE_FLAGS " /W0")
+  else()
+    set_property(SOURCE ${LLDB_WRAP_PYTHON} APPEND_STRING PROPERTY COMPILE_FLAGS " -w")
+  endif()
+endif()
+
 # This should not be part of LLDBDependencies.cmake, because we don't
 # want every single library taking a dependency on the script interpreters.
 target_link_libraries(liblldb PRIVATE
   lldbPluginScriptInterpreterNone
   lldbPluginScriptInterpreterPython
   )
 
 set_target_properties(liblldb