Constant openssl_sys::SSL_OP_NO_COMPRESSION
pub const SSL_OP_NO_COMPRESSION: c_ulong = 0x00020000;
The portability is definied by:
#[cfg(all(ossl101, not(any())))]
pub const SSL_OP_NO_COMPRESSION: c_ulong = 0x00020000;
#[cfg(all(ossl101, not(any())))]