add thunk-rs to support win7 (#812)

* add thunk-rs to support win7
---------

Co-authored-by: loecomm <loecom@qq.com>

easytier/Cargo.toml

@@ -251,6 +251,13 @@ prost-reflect-build = { version = "0.14.0" }
 reqwest = { version = "0.12.12", features = ["blocking"] }
 zip = "0.6.6"
 
+# enable thunk-rs when compiling for x86_64 or i686 windows
+[target.x86_64-pc-windows-msvc.build-dependencies]
+thunk-rs = { git = "https://github.com/easytier/thunk.git", default-features = false, features = ["win7"] }
+
+[target.i686-pc-windows-msvc.build-dependencies]
+thunk-rs = { git = "https://github.com/easytier/thunk.git", default-features = false, features = ["win7"] }
+
 
 [dev-dependencies]
 serial_test = "3.0.0"

easytier/build.rs

@@ -71,6 +71,8 @@ impl WindowsBuild {
 
         if target.contains("x86_64") {
             println!("cargo:rustc-link-search=native=easytier/third_party/");
+        } else if target.contains("i686") {
+            println!("cargo:rustc-link-search=native=easytier/third_party/i686/");
         } else if target.contains("aarch64") {
             println!("cargo:rustc-link-search=native=easytier/third_party/arm64/");
         }
@@ -125,6 +127,12 @@ fn check_locale() {
 }
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // enable thunk-rs when target os is windows and arch is x86_64 or i686
+    #[cfg(target_os = "windows")]
+    if !std::env::var("TARGET").unwrap_or_default().contains("aarch64"){
+        thunk::thunk();
+    }
+
     #[cfg(target_os = "windows")]
     WindowsBuild::check_for_win();