“仓位目标必须可用于'货运运行'" [英] "a bin target must be available for 'cargo run'"

问题描述

在Intellij IDEA 2017中构建新的Rust来自其他来源的项目"时，我无法通过其UI运行该项目.

While building a new Rust "Project from other sources", in Intellij IDEA 2017, I was unable to run the project through its UI.

C:/Users/sjsui/.cargo/bin/cargo.exe运行错误:bin目标必须是 适用于cargo run

C:/Users/sjsui/.cargo/bin/cargo.exe run error: a bin target must be available for cargo run

进程退出代码为101

Process finished with exit code 101

我注意到我的构建配置没有提供--bin目标，所以我将路径放置到projects目标文件夹.结果相同.

I noticed that no --bin target was provided by my build configuration so I placed the path to the projects target folder; same result.

C:/Users/sjsui/.cargo/bin/cargo.exe运行--bin C:\ Users \ sjsui \ exercism \ rust \ hello-world \ target \ debug 错误:没有名为C:\Users\sjsui\exercism\rust\hello-world\target\debug

C:/Users/sjsui/.cargo/bin/cargo.exe run --bin C:\Users\sjsui\exercism\rust\hello-world\target\debug error: no bin target named C:\Users\sjsui\exercism\rust\hello-world\target\debug

我尝试通过Cargo命令行界面创建一个新的Rust项目，并在运行它时收到此错误:

I tried creating a fresh Rust project through the Cargo command line interface, and received this error when running it:

错误:无法执行链接器link.exe:系统找不到指定的文件. (操作系统错误2) 注意:msvc目标取决于msvc链接器，但是link.exe是 找不到

error: could not exec the linker link.exe: The system cannot find the file specified. (os error 2) note: the msvc targets depend on the msvc linker but link.exe was not found

注意:请确保VS 2013或VS 2015已随 Visual C ++选项

note: please ensure that VS 2013 or VS 2015 was installed with the Visual C++ option

很明显，我必须安装Visual C ++构建工具2017，并且正在安装中.这些错误是相关的还是其他问题?

Evidently I must install Visual C++ build tools 2017 and am in the process of doing so. Are these errors related, or different issues?

推荐答案

默认情况下，Cargo会将文件src/main.rs视为该软件包的主要二进制目标.如果此文件不存在，并且在Cargo.toml中没有定义其他二进制目标，则将收到此错误.

By default, Cargo will consider the file src/main.rs to be the main binary target for the package. If this file doesn't exist, and there are no other binary targets defined in Cargo.toml, you'll get this error.

根据文档，当您在IntelliJ IDEA，您可以选择使用二进制(应用程序)模板.这应该为您提供src/main.rs而不是src/lib.rs(这是库目标的默认根文件).在命令行上使用Cargo，您还可以使用

According to the documentation, when you create a Rust project in IntelliJ IDEA, you get an option to Use a binary (application) template. This should give you a src/main.rs instead of a src/lib.rs (which is the default root file for a library target). Using Cargo on the command line, you can also create an application package with cargo new hello.

Cargo默认为--bin以生成二进制程序.要创建一个库，我们将传递--lib.

Cargo defaults to --bin to make a binary program. To make a library, we'd pass --lib.

在cargo run命令上使用--bin时，该参数引用 [[bin]] 部分，或遵循模式src/bin/*.rs的文件(参数替换*)在Cargo.toml中.例如，cargo run --bin foo将使用Cargo.toml中的name = "foo"编译并运行src/bin/foo.rs或[[bin]]部分.

When you use --bin on the cargo run command, the argument refers to one of the [[bin]] sections in Cargo.toml, or files following the pattern src/bin/*.rs (the argument replaces the *) if there are no [[bin]] sections in Cargo.toml. For example, cargo run --bin foo will either compile and run src/bin/foo.rs or the [[bin]] section with name = "foo" in Cargo.toml.

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