diff --git a/llvm-build/build.py b/llvm-build/build.py
index 836f6ef1831a39e944486033004c4a900d56d59f..7aeb4c69e8db8ae19513bc25bba457b663d8b0ec 100755
--- a/llvm-build/build.py
+++ b/llvm-build/build.py
@@ -950,6 +950,7 @@ class LlvmLibs(BuildUtils):
         rt_defines['LIBCXXABI_USE_COMPILER_RT'] = 'ON'
         rt_defines['LIBCXXABI_USE_LLVM_UNWINDER'] = 'ON'
         rt_defines['LIBCXXABI_ENABLE_STATIC_UNWINDER'] = 'ON'
+        rt_defines['LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY'] = 'OFF'
         rt_defines['LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL'] = 'OFF'
         rt_defines['LIBCXXABI_ENABLE_SHARED'] = 'OFF'
         rt_defines['LIBCXXABI_LIBCXX_INCLUDES'] = os.path.abspath(os.path.join(self.build_config.LLVM_PROJECT_DIR, 'libcxx', 'include'))