[libunwind] Add -Wno-suggest-override to CMakeLists.txt.

Set -Wno-suggest-override where such warning is provided
by the compiler when building libunwind, alongside libcxx
and libcxxabi, using recent Clang. This extends behavior
introduced in 77e0e9e17daf0865620abcd41f692ab0642367c4
to libunwind, avoiding a large amount of warnings during
builds. See D84126 for the original patch.

diff --git a/libunwind/CMakeLists.txt b/libunwind/CMakeLists.txt
index 4606360..8419d85 100644 (file)
--- a/libunwind/CMakeLists.txt
+++ b/libunwind/CMakeLists.txt
@@ -271,6 +271,8 @@ add_compile_flags_if_supported(-Wunused-variable)
 add_compile_flags_if_supported(-Wwrite-strings)
 add_compile_flags_if_supported(-Wundef)
 
+add_compile_flags_if_supported(-Wno-suggest-override)
+
 if (LIBUNWIND_ENABLE_WERROR)
   add_compile_flags_if_supported(-Werror)
   add_compile_flags_if_supported(-WX)