无法在 R 3.1.2 中安装 devtools

Question

我试图通过install.packages("devtools") 在 Rstudio 中安装 devtools 包，但失败了。错误消息是：

* installing *source* package ‘xml2’ ...
** package ‘xml2’ successfully unpacked and MD5 sums checked
Package libxml-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libxml-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libxml-2.0' found
Package libxml-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libxml-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libxml-2.0' found
Could not find libxml2. Please install libxml2-devel (rpm) or libxml2-dev (deb).
ERROR: configuration failed for package ‘xml2’
* removing ‘/home/xwang/R/x86_64-pc-linux-gnu-library/3.1/xml2’
Warning in install.packages :
  installation of package ‘xml2’ had non-zero exit status
ERROR: dependency ‘xml2’ is not available for package ‘rversions’
* removing ‘/home/xwang/R/x86_64-pc-linux-gnu-library/3.1/rversions’
Warning in install.packages :
  installation of package ‘rversions’ had non-zero exit status
ERROR: dependency ‘rversions’ is not available for package ‘devtools’
* removing ‘/home/xwang/R/x86_64-pc-linux-gnu-library/3.1/devtools’
Warning in install.packages :
  installation of package ‘devtools’ had non-zero exit status

The downloaded source packages are in
    ‘/tmp/RtmpYccDpT/downloaded_packages’

看起来很难找到libxml-2.0。有谁知道一个简单的解决方法？我使用的是 R 版本 3.1.2。

Answer 1

最终我通过以下方式解决了问题：

sudo apt-get install libxml2-dev

然后又出现了一个问题：

Error : object ‘curl_fetch_memory’ is not exported by 'namespace:curl'

可以通过安装curl包解决：

install.packages("curl")

Answer 2

您只需更新到最新版本的 R（R 版本 3.2.1）

Answer 3

它需要一些开发人员库（来源）：curl developer、xml2 developer 作为依赖项。 所以用包存储库（yum、dnf、apt-get）安装它，然后重试在 R 中安装 devtools 包。