1 files changed, 4 insertions, 0 deletions
diff --git a/openssl/build.rs b/openssl/build.rs
index 7a0c60dc..954e9b0c 100644
--- a/openssl/build.rs
+++ b/openssl/build.rs
@@ -16,6 +16,10 @@ fn main() {
         _ => panic!("Unable to detect OpenSSL version"),
     }
 
+    if let Ok(_) = env::var("DEP_OPENSSL_LIBRESSL") {
+        println!("cargo:rustc-cfg=libressl");
+    }
+
     if let Ok(vars) = env::var("DEP_OPENSSL_CONF") {
         for var in vars.split(",") {
             println!("cargo:rustc-cfg=osslconf=\"{}\"", var);