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-rw-r--r--CMakeLists.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0551200..a4a52bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -221,6 +221,7 @@ append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-o
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
+append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNDEF_FLAG -Wundef)
if (LIBCXXABI_ENABLE_WERROR)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror)