text: #include <openssl/opensslv.h>
  #include <openssl/opensslconf.h>
  
  #define VERSION2(n, v) RUST_VERSION_##n##_##v
  #define VERSION(n, v) VERSION2(n, v)
  
  #ifdef LIBRESSL_VERSION_NUMBER
  VERSION(LIBRESSL, LIBRESSL_VERSION_NUMBER)
  #else
  VERSION(OPENSSL, OPENSSL_VERSION_NUMBER)
  #endif
  
  #ifdef OPENSSL_NO_BF
  RUST_CONF_OPENSSL_NO_BF
  #endif
  
  #ifdef OPENSSL_NO_BUF_FREELISTS
  RUST_CONF_OPENSSL_NO_BUF_FREELISTS
  #endif
  
  #ifdef OPENSSL_NO_CMS
  RUST_CONF_OPENSSL_NO_CMS
  #endif
  
  #ifdef OPENSSL_NO_COMP
  RUST_CONF_OPENSSL_NO_COMP
  #endif
  
  #ifdef OPENSSL_NO_EC
  RUST_CONF_OPENSSL_NO_EC
  #endif
  
  #ifdef OPENSSL_NO_EC2M
  RUST_CONF_OPENSSL_NO_EC2M
  #endif
  
  #ifdef OPENSSL_NO_ENGINE
  RUST_CONF_OPENSSL_NO_ENGINE
  #endif
  
  #ifdef OPENSSL_NO_KRB5
  RUST_CONF_OPENSSL_NO_KRB5
  #endif
  
  #ifdef OPENSSL_NO_NEXTPROTONEG
  RUST_CONF_OPENSSL_NO_NEXTPROTONEG
  #endif
  
  #ifdef OPENSSL_NO_PSK
  RUST_CONF_OPENSSL_NO_PSK
  #endif
  
  #ifdef OPENSSL_NO_RFC3779
  RUST_CONF_OPENSSL_NO_RFC3779
  #endif
  
  #ifdef OPENSSL_NO_RMD160
  RUST_CONF_OPENSSL_NO_RMD160
  #endif
  
  #ifdef OPENSSL_NO_SHA
  RUST_CONF_OPENSSL_NO_SHA
  #endif
  
  #ifdef OPENSSL_NO_SRP
  RUST_CONF_OPENSSL_NO_SRP
  #endif
  
  #ifdef OPENSSL_NO_SSL3_METHOD
  RUST_CONF_OPENSSL_NO_SSL3_METHOD
  #endif
  
  #ifdef OPENSSL_NO_TLSEXT
  RUST_CONF_OPENSSL_NO_TLSEXT
  #endif
  
  #ifdef OPENSSL_NO_STDIO
  RUST_CONF_OPENSSL_NO_STDIO
  #endif
  