diff --git a/folly/external/aor/CMakeLists.txt b/folly/external/aor/CMakeLists.txt
index e07e58745..1429f54e9 100644
--- a/folly/external/aor/CMakeLists.txt
+++ b/folly/external/aor/CMakeLists.txt
@@ -20,6 +20,10 @@
 # Linux ELF directives (.size, etc.) that Darwin's assembler doesn't support
 if(IS_AARCH64_ARCH)
 
+if(BUILD_SHARED_LIBS)
+  set(CMAKE_ASM_CREATE_SHARED_LIBRARY ${CMAKE_C_CREATE_SHARED_LIBRARY})
+endif()
+
 folly_add_library(
   NAME memcpy_aarch64
   SRCS