无法在 R-Studio 中安装任何软件包答案

【问题标题】：Unable to install any packages in R-Studio无法在 R-Studio 中安装任何软件包
【发布时间】：2020-04-05 14:59:33
【问题描述】：

我在 macos Yosemite Version 10.10.5 上运行 r-studio version 1.1.463。我的笔记本电脑是 2015 年初的。每当我尝试在 R-Studio 中安装任何软件包时，它都会给我这个错误消息：

抱歉，我是一个完整的 n00b，但我不确定这是否意味着软件包确实被下载了。如果有，我在哪里可以找到它们，我需要做什么才能将它们安装在 R-Studio 中？我没有 C 编译器，也不确定是否需要。

    =============================================

    install.packages('reshape')
    also installing the dependencies ‘Rcpp’, ‘plyr’

    Warning in install.packages :
      unable to access index for repository http://cran.rstudio.com/bin/macosx/contrib/3.2
    Packages which are only available in source form, and may need compilation
      of C/C++/Fortran: ‘Rcpp’ ‘plyr’ ‘reshape’
    Do you want to attempt to install these from sources?
    y/n: y
    installing the source packages ‘Rcpp’, ‘plyr’, ‘reshape’

    trying URL 'http://cran.rstudio.com/src/contrib/Rcpp_1.0.4.tar.gz'
    Content type 'application/x-gzip' length 2750216 bytes (2.6 MB)
    ==================================================
    downloaded 2.6 MB

    trying URL 'http://cran.rstudio.com/src/contrib/plyr_1.8.6.tar.gz'
    Content type 'application/x-gzip' length 401191 bytes (391 KB)
    ==================================================
    downloaded 391 KB

    trying URL 'http://cran.rstudio.com/src/contrib/reshape_0.8.8.tar.gz'
    Content type 'application/x-gzip' length 42558 bytes (41 KB)
    ==================================================
    downloaded 41 KB

    * installing *source* package ‘Rcpp’ ...
    ** package ‘Rcpp’ successfully unpacked and MD5 sums checked
    ** libs
    xcode-select: note: no developer tools were found at '/Applications/Xcode.app', requesting install. Choose an option in the
dialog to download the command line developer tools.
    ERROR: compilation failed for package ‘Rcpp’
    * removing ‘/Library/Frameworks/R.framework/Versions/3.2/Resources/library/Rcpp’
    Warning in install.packages :
      installation of package ‘Rcpp’ had non-zero exit status
    ERROR: dependency ‘Rcpp’ is not available for package ‘plyr’
    * removing ‘/Library/Frameworks/R.framework/Versions/3.2/Resources/library/plyr’
    Warning in install.packages :
      installation of package ‘plyr’ had non-zero exit status
    ERROR: dependency ‘plyr’ is not available for package ‘reshape’
    * removing ‘/Library/Frameworks/R.framework/Versions/3.2/Resources/library/reshape’
    Warning in install.packages :
      installation of package ‘reshape’ had non-zero exit status

    The downloaded source packages are in
      ‘/private/var/folders/zp/18zxxbcs5cncbn98lr6zcptc0000gn/T/RtmpQ6Hg59/downloaded_packages’

提前非常感谢。

【问题讨论】：

嗨，你的 R.version.string 是什么？
或许可以考虑询问：community.rstudio.com
尝试将 R 更新到 3.6。和 RStudio 到 1.2.5
如果你运行：library(reshape) 会发生什么？如果您没有收到错误消息，则说明它已正确安装。
R 版本 3.2.1 (2015-06-18)

标签： r-studio macos r macos install.packages

【解决方案1】：

注意错误：“在 '/Applications/Xcode.app'，请求安装。”
注意这也是从 R studio 的依赖页面中声明：“核心软件 R包开发所需的开发实用程序可以是通过安装 XCode 的命令行工具获得。你可以做这是两种方式之一。” source

您需要安装命令行开发者工具。启动您的终端并执行以下操作：

xcode-select --install

然后重试安装。

【讨论】：