R，install.packages('devtools') bug

Question

我似乎不能安装devtools。我总是收到这样的信息(在结尾)：

  * installing *source* package ‘RCurl’ ...
  ** package ‘RCurl’ successfully unpacked and MD5 sums checked
  checking for curl-config... no
  Cannot find curl-config
  ERROR: configuration failed for package ‘RCurl’
  * removing ‘/home/vapri/R/x86_64-pc-linux-gnu-library/3.0/RCurl’
  Warning in install.packages :
    installation of package ‘RCurl’ had non-zero exit status
  ERROR: dependency ‘RCurl’ is not available for package ‘httr’
  * removing ‘/home/vapri/R/x86_64-pc-linux-gnu-library/3.0/httr’
  Warning in install.packages :
    installation of package ‘httr’ had non-zero exit status
  ERROR: dependencies ‘httr’, ‘RCurl’ are not available for package ‘devtools’
  * removing ‘/home/vapri/R/x86_64-pc-linux-gnu-library/3.0/devtools’
  Warning in install.packages :
    installation of package ‘devtools’ had non-zero exit status

The downloaded source packages are in
    ‘/tmp/RtmpqLDAb0/downloaded_packages’

谁能告诉我怎么回事吗？我正在使用Ubuntu14.04，一些研究似乎暗示这可能是问题所在。

Answer 1

更仔细地观察：

 checking for curl-config... no
  Cannot find curl-config

您需要curl-config脚本。通常，您需要一个包libcurl*-dev或类似的包，不同发行版的名称可能有所不同。在我输入的系统上：

edd@max:~$ dpkg -S `which curl-config`
libcurl4-nss-dev: /usr/bin/curl-config
edd@max:~$ 

但是还有一个替代的libcurl4-gnutls-dev，我在其他一些系统上也使用它，还有libcurl4-openssl-dev。

Answer 2

帮了我。

sudo apt-get install aptitude
sudo apt-get install libcurl4-openssl-dev
sudo apt-get install libxml2-dev