[libunwind] Add -Wno-dll-attribute-on-redeclaration when building for windows
It's not worth trying to fix these warnings within libunwind, instead
silence them.
Differential Revision: https://reviews.llvm.org/D90075
GitOrigin-RevId: df6d2e8ab1a4212284e4763724a2211df2c7394a
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1c053e6..d7e13b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -203,6 +203,14 @@
add_compile_flags_if_supported(-Wno-suggest-override)
+if (WIN32)
+ # The headers lack matching dllexport attributes (_LIBUNWIND_EXPORT);
+ # silence the warning instead of cluttering the headers (which aren't
+ # necessarily the ones that the callers will use anyway) with the
+ # attributes.
+ add_compile_flags_if_supported(-Wno-dll-attribute-on-redeclaration)
+endif()
+
if (LIBUNWIND_ENABLE_WERROR)
add_compile_flags_if_supported(-Werror)
add_compile_flags_if_supported(-WX)
