Constant openssl_sys::CRYPTO_EX_INDEX_SSL_CTX
pub const CRYPTO_EX_INDEX_SSL_CTX: c_int = 1;
The portability is definied by:
#[cfg(all(ossl110, not(any())))]
pub const CRYPTO_EX_INDEX_SSL_CTX: c_int = 1;
#[cfg(all(ossl110, not(any())))]