“Enclave functions can rely on special versions of the C/C++ runtime libraries, STL, synchronization and several other trusted libraries that are part of the Intel® Software Guard Extensions SDK. These trusted libraries are specifically designed to be used inside enclaves.” ------https://software.intel.com/en-us/sgx-sdk-dev-reference-calling-functions-inside-the-enclave
Enclave 可以调用特殊的C/C++实时库，标准库和一些其他可信的SGX SDK库。这些库可信的库是特定设计来使用于enclave的。