当使用“R CMD INSTALL”时如何安装依赖关系安装R包？ [英] How to install dependencies when using "R CMD INSTALL" to install R packages?

问题描述

我正在开发我的第一个R包（使用R 2.13，Ubuntu 10.10）。让我们称之为 foo ，假设R /目录中的代码以库（bar）行开头，其中栏是现有的包，在CRAN中，其中 foo 依赖。我的DESCRIPTION文件包含以下行：

 取决于：bar 
  

当包 foo 准备进行测试时，我在本地安装：

  R CMD INSTALL foo_1.0.tar.gz 
  

但是，如果 bar 未安装，我看到：

 错误：依赖关系bar不可用于包'foo'
  

显然，如果我使用安装从CRAN安装了我的 foo .packages（）， bar 将同时安装。所以我的问题是：如果需要，当我使用R CMD INSTALL安装我的软件包 foo 时，如何安装CRAN软件包？这是配置脚本的工作吗？

解决方案

实际上，重新阅读R扩展指南，并不是说R CMD INSTALL将获得CRAN的依赖关系。 R中的install.packages（）方法将会做到这一点，但是乍一看，我不认为R CMD INSTALL是这样的。

可以使用install.packages从.tar.gz安装，但是您必须设置repos = NULL，然后适用：

 依赖关系：逻辑指示还要安装这些软件包依赖于/ suggest / import的卸载软件包
（等等）
递归）。如果repos = NULL，则不使用。 
  

我怀疑要做的是从DESCRIPTION文件中获取依赖项，然后运行R和当您在干净的环境中测试您的构建时，请对其进行一次install.packages（）。

I'm developing my first R package (using R 2.13, Ubuntu 10.10). Let's call it foo and let's say that the code in the R/ directory begins with the line library(bar), where bar is an existing package, in CRAN, on which foo depends. My DESCRIPTION file contains the line:

Depends: bar

When package foo is ready for testing, I install it locally using:

R CMD INSTALL foo_1.0.tar.gz

However, if bar is not installed, I see:

ERROR: dependency ‘bar’ is not available for package ‘foo’

Obviously, if my foo were installed from CRAN using install.packages(), bar would be installed at the same time. So my question is: how can I ensure that CRAN package bar is installed, if required, when I install my package foo using R CMD INSTALL? Is this a job for a configuration script?

解决方案

Actually, re-reading the R extensions guide, it doesn't say that R CMD INSTALL will get dependencies from CRAN. The install.packages() method from within R will do that, but at first glance I don't think R CMD INSTALL does.

You can use install.packages to install from a .tar.gz, but you have to set repos=NULL, and then this applies:

 dependencies: logical indicating to also install uninstalled packages
          on which these packages depend/suggest/import (and so on
          recursively).  Not used if repos = NULL.

I suspect the thing to do is to get the dependencies out of the DESCRIPTION file and then run R and do an install.packages() on those when you are testing your build in a clean environment.

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