Add ktls feature (#232)

Author: james58899

Cargo.toml

@@ -48,6 +48,8 @@ idea = []
 seed = []
 # Forces configuring Engine module support.
 force-engine = []
+# Enable kTLS support
+ktls = []
 
 [workspace]
 members = ['testcrate']

src/lib.rs

@@ -219,6 +219,10 @@ impl Build {
             configure.arg("no-seed");
         }
 
+        if cfg!(feature = "ktls") {
+            configure.arg("enable-ktls");
+        }
+
         if target.contains("musl") {
             // Engine module fails to compile on musl (it needs linux/version.h
             // right now) but we don't actually need this most of the time.