chore: add vendor dependencies for kauma build

vendor/openssl-macros/src/lib.rs

@@ -0,0 +1,32 @@
+#![allow(clippy::uninlined_format_args)]
+
+use proc_macro::TokenStream;
+use proc_macro2::Ident;
+use quote::quote;
+use syn::{parse_macro_input, ItemFn};
+
+#[proc_macro_attribute]
+pub fn corresponds(attr: TokenStream, item: TokenStream) -> TokenStream {
+    let function = parse_macro_input!(attr as Ident);
+    let item = parse_macro_input!(item as ItemFn);
+
+    let function = function.to_string();
+    let line = format!(
+        "This corresponds to [`{0}`](https://www.openssl.org/docs/manmaster/man3/{0}.html).",
+        function
+    );
+
+    let attrs = item.attrs;
+    let vis = item.vis;
+    let sig = item.sig;
+    let block = item.block;
+
+    let out = quote! {
+        #(#attrs)*
+        #[doc = ""]
+        #[doc = #line]
+        #[doc(alias = #function)]
+        #vis #sig #block
+    };
+    out.into()
+}