Add missing wide character types

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 description = "The parts of OpenBSD libc that make sense on wasm32-unknown-unknown."
-edition = "2018"
+edition = "2021"
 keywords = ["libc"]
 license = "BSD-3-Clause AND ISC AND MIT"
 links = "wasm32-unknown-unknown-openbsd-libc"

build.rs

@@ -1,7 +1,7 @@
 use std::env;
 
 fn main() {
-    if !env::var("TARGET").map_or(false, |t| t.starts_with("wasm")) {
+    if !env::var("TARGET").is_ok_and(|t| t.starts_with("wasm")) {
         return;
     }
 
@@ -117,7 +117,7 @@ fn main() {
         .compile("wasm32-unknown-unknown-openbsd-libc");
 
     println!(
-        "cargo:include={}/include",
+        "cargo::metadata=include={}/include",
         env::var("CARGO_MANIFEST_DIR").unwrap()
     );
 }

include/machine/_types.h

@@ -22,6 +22,7 @@ typedef unsigned long __paddr_t;
 typedef unsigned long __vsize_t;
 typedef unsigned long __psize_t;
 
+/* Standard system types */
 typedef unsigned long __size_t;
 typedef long __ssize_t;
 
@@ -30,3 +31,8 @@ typedef double __double_t;
 
 struct __va_list_tag;
 typedef struct __va_list_tag *__va_list;
+
+/* Wide character support types */
+typedef int __rune_t;
+typedef void * __wctrans_t;
+typedef void * __wctype_t;