fix(examples): keep the target fallback

core/tauri-codegen/src/context.rs

@@ -127,22 +127,34 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
     root,
   } = data;
 
-  let target = std::env::var("TARGET")
-    .or_else(|_| std::env::var("TAURI_TARGET_TRIPLE"))
-    .expect("`TAURI_TARGET_TRIPLE` env var not set, do you have a build script with tauri-build?");
-  let target = if target.contains("unknown-linux") {
-    Target::Linux
-  } else if target.contains("pc-windows") {
-    Target::Windows
-  } else if target.contains("apple-darwin") {
-    Target::Darwin
-  } else if target.contains("android") {
-    Target::Android
-  } else if target.contains("apple-ios") {
-    Target::Ios
-  } else {
-    panic!("unknown codegen target {}", target);
-  };
+  let target =
+    if let Ok(target) = std::env::var("TARGET").or_else(|_| std::env::var("TAURI_TARGET_TRIPLE")) {
+      if target.contains("unknown-linux") {
+        Target::Linux
+      } else if target.contains("pc-windows") {
+        Target::Windows
+      } else if target.contains("apple-darwin") {
+        Target::Darwin
+      } else if target.contains("android") {
+        Target::Android
+      } else if target.contains("apple-ios") {
+        Target::Ios
+      } else {
+        panic!("unknown codegen target {}", target);
+      }
+    } else if cfg!(target_os = "linux") {
+      Target::Linux
+    } else if cfg!(windows) {
+      Target::Windows
+    } else if cfg!(target_os = "macos") {
+      Target::Darwin
+    } else if cfg!(target_os = "android") {
+      Target::Android
+    } else if cfg!(target_os = "ios") {
+      Target::Ios
+    } else {
+      panic!("unknown codegen target")
+    };
 
   #[cfg(any(windows, target_os = "linux", target_os = "macos"))]
   if dev && (target == Target::Ios || target == Target::Android) {