cmake目标链接openssl错误

这是我的一部分 CMakeLists.txt .

find_package(OpenSSL REQUIRED)

add_executable(
        aes_test
        src/aes_test.cpp
)

MESSAGE(${OPENSSL_FOUND})
MESSAGE(${OPENSSL_SSL_LIBRARY})

target_link_libraries(
        aes_test
        ${OPENSSL_SSL_LIBRARY}
)

这个 MESSAGE 的输出

TRUE
/usr/local/opt/openssl/lib/libssl.dylib

cmake 找到了 OpenSSL 但是,当我将程序aes_测试与 OpenSSL 存在链接错误。

Undefined symbols for architecture x86_64:
  "_AES_decrypt", referenced from:
      _main in aes_test.cpp.o
  "_AES_encrypt", referenced from:
      _main in aes_test.cpp.o
  "_AES_set_decrypt_key", referenced from:
      _main in aes_test.cpp.o
  "_AES_set_encrypt_key", referenced from:
      _main in aes_test.cpp.o
ld: symbol(s) not found for architecture x86_64

在 aes_test.cpp ,我使用函数 AES_set_encrypt_key 其定义见 aes.h . 怎么了?有人能帮我吗?事先谢谢。