disable the conf module for LibreSSL 4

Author: botovq

openssl/build.rs

@@ -31,6 +31,7 @@ fn main() {
     println!("cargo:rustc-check-cfg=cfg(libressl380)");
     println!("cargo:rustc-check-cfg=cfg(libressl382)");
     println!("cargo:rustc-check-cfg=cfg(libressl390)");
+    println!("cargo:rustc-check-cfg=cfg(libressl400)");
 
     println!("cargo:rustc-check-cfg=cfg(ossl101)");
     println!("cargo:rustc-check-cfg=cfg(ossl102)");
@@ -112,6 +113,9 @@ fn main() {
         if version >= 0x3_09_00_00_0 {
             println!("cargo:rustc-cfg=libressl390");
         }
+        if version >= 0x4_00_00_00_0 {
+            println!("cargo:rustc-cfg=libressl400");
+        }
     }
 
     if let Ok(vars) = env::var("DEP_OPENSSL_CONF") {

openssl/src/conf.rs

@@ -8,7 +8,7 @@ foreign_type_and_impl_send_sync! {
     pub struct ConfRef;
 }
 
-#[cfg(not(boringssl))]
+#[cfg(not(any(boringssl, libressl400)))]
 mod methods {
     use super::Conf;
     use crate::cvt_p;
@@ -61,5 +61,5 @@ mod methods {
         }
     }
 }
-#[cfg(not(boringssl))]
+#[cfg(not(any(boringssl, libressl400)))]
 pub use methods::*;