android.mk文件 variable already set in inherited scope
时间: 2024-02-09 20:12:05 浏览: 42
这个问题通常出现在编写 Android NDK 中的 Makefile 文件时。它的意思是,你在子目录中设置了一个变量,但是在父目录或者更高级别的 Makefile 中已经设置了同名的变量。这样会导致变量被重复定义,从而引发编译错误。
解决这个问题的方法是,在子目录中使用不同的变量名,或者在父目录中删除重复的变量定义。你可以使用 `override` 关键字来覆盖父目录中的变量定义,例如:
```
override LOCAL_SRC_FILES := foo.c bar.c
```
这样就可以在子目录中重新定义 `LOCAL_SRC_FILES` 变量,而不会引发重复定义的错误。
相关问题
@Retention(RetentionPolicy.RUNTIME) @Documented @Inherited
这是Java中的注解,分别是@Retention、@Documented和@Inherited。
- @Retention用于指定注解的生命周期,@Retention(RetentionPolicy.RUNTIME)表示该注解在运行时仍然可用,可以通过反射获取。
- @Documented用于指定注解是否会出现在Java文档中。如果一个注解被@Documented修饰,则它会出现在生成的API文档中。
- @Inherited用于指定注解是否可以被子类继承。如果一个注解被@Inherited修饰,则它可以被子类继承,否则不能被子类继承。
这些注解可以用来给代码添加额外的信息,以便在运行时或文档生成时使用。
PickUpItem.transform' hides inherited member 'Component.transform'. Use the new keyword if hiding was intended.
This is a warning message in C# that appears when a class is defining a member with the same name as a member in its base class. In this case, the class PickUpItem is defining a member called "transform", which is already defined in its base class Component.
To resolve this warning, you can either rename the member in PickUpItem to something else, or use the "new" keyword to explicitly indicate that you are intentionally hiding the inherited member.
For example:
```
public new Transform transform;
```
This will suppress the warning and allow you to define a new member with the same name as the base class member. However, be aware that using the "new" keyword can potentially cause confusion and should be used sparingly.