diff --git a/librocksdb-sys/Cargo.toml b/librocksdb-sys/Cargo.toml
index 5784ea4..f343385 100644
--- a/librocksdb-sys/Cargo.toml
+++ b/librocksdb-sys/Cargo.toml
@@ -32,7 +32,7 @@ zstd-sys = { version = "2.0", features = ["zdict_builder"], optional = true }
 libz-sys = { version = "1.1", default-features = false, optional = true }
 bzip2-sys = { version = "0.1", default-features = false, optional = true }
 
-[target.'cfg(not(any(target_os = "linux",target_os = "darwin")))'.dependencies.openssl]
+[target.'cfg(not(any(target_os = "linux",target_os = "darwin",target_os = "openbsd")))'.dependencies.openssl]
 version = "0.10"
 features = ["vendored"]
 
diff --git a/librocksdb-sys/build.rs b/librocksdb-sys/build.rs
index bc098b0..5a307e0 100644
--- a/librocksdb-sys/build.rs
+++ b/librocksdb-sys/build.rs
@@ -157,8 +157,7 @@ fn build_rocksdb() {
                 .display()
         );
         println!("cargo:rustc-link-lib=static=ippcp");
-    } else {
-        //if !target.contains("openbsd") {
+    } else if !target.contains("openbsd") {
         if let Some(include) = std::env::var_os("DEP_OPENSSL_INCLUDE") {
             config.include(include);
         } else {
@@ -235,12 +234,20 @@ fn build_rocksdb() {
         config.define("ROCKSDB_PLATFORM_POSIX", None);
         config.define("ROCKSDB_LIB_IO_POSIX", None);
         println!("cargo:rustc-link-arg=-pthread");
+        println!("cargo:rustc-link-arg=-lz");
+        println!("cargo:rustc-link-arg=-lexecinfo");
         config.flag("-fno-builtin-memcmp");
+        config.flag_if_supported("-faligned-new");
+        config.flag("-Wshorten-64-to-32");
+        config.define("ZLIB", None);
+        config.define("ROCKSDB_BACKTRACE", None);
+        config.define("HAVE_UINT128_EXTENSION", None);
+        config.define("DHAVE_ALIGNED_NEW", None);
         config.define("_REENTRANT", None);
         //pkg_config::Config::new().probe("openssl").unwrap();
-        //// config.include("rocksdb/plugin/openssl/include");
-        //lib_sources.push("plugin/openssl/openssl_provider.cc");
-        //config.flag("-lcrypto");
+        config.include("rocksdb/plugin/openssl/include");
+        lib_sources.push("plugin/openssl/openssl_provider.cc");
+        config.flag("-lcrypto");
         // let dir = env::var("CARGO_MANIFEST_DIR").unwrap();
         // println!("cargo:rustc-link-lib=static=crypto");
     } else if target.contains("windows") {
diff --git a/librocksdb-sys/src/lib.rs b/librocksdb-sys/src/lib.rs
index b96688d..52d557d 100644
--- a/librocksdb-sys/src/lib.rs
+++ b/librocksdb-sys/src/lib.rs
@@ -24,7 +24,7 @@ extern crate bzip2_sys;
 extern crate libz_sys;
 #[cfg(feature = "lz4")]
 extern crate lz4_sys;
-#[cfg(not(any(target_os = "linux", target_os = "macos")))]
+#[cfg(not(any(target_os = "linux", target_os = "macos",target_os="openbsd")))]
 extern crate openssl;
 #[cfg(feature = "zstd")]
 extern crate zstd_sys;