报错：

– Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR)
CMake Error at Utilities/cmcurl/CMakeLists.txt:562 (message):
Could not find OpenSSL. Install an OpenSSL development package or
configure CMake with -DCMAKE_USE_OPENSSL=OFF to build without OpenSSL.

解决方式：
使用指令apt-get install libssl-dev或 yum install libssl-dev安装openssl