问题描述
我正在尝试使用fromJSON从远程服务器提取一些json数据：
> server <- 'http://111.111.000.00:3000'
> streams <- fromJSON(paste(server, '/output/streams', sep=""), flatten=TRUE)
结果：
Error: Required package curl not found.
Please run: install.packages('curl')
所以我尝试安装它：
> install.packages("curl")
Installing package into ‘/home/lauxxx/R/x86_64-pc-linux-gnu-library/3.3’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/src/contrib/curl_2.3.tar.gz'
Content type 'application/x-gzip' length 400460 bytes (391 KB)
==================================================
downloaded 391 KB
* installing *source* package ‘curl’ ...
** package ‘curl’ successfully unpacked and MD5 sums checked
Using PKG_CFLAGS=
Using PKG_LIBS=-lcurl
------------------------- ANTICONF ERROR ---------------------------
Configuration failed because libcurl was not found. Try installing:
* deb: libcurl4-openssl-dev (Debian, Ubuntu, etc)
* rpm: libcurl-devel (Fedora, CentOS, RHEL)
* csw: libcurl_dev (Solaris)
If libcurl is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a libcurl.pc file. If pkg-config
is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:
R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'
--------------------------------------------------------------------
ERROR: configuration failed for package ‘curl’
* removing ‘/home/lauxxx/R/x86_64-pc-linux-gnu-library/3.3/curl’
Warning in install.packages :
installation of package ‘curl’ had non-zero exit status
The downloaded source packages are in
‘/tmp/RtmpdoavNf/downloaded_packages’
然后我尝试安装libcurl4-openssl-dev：
> install.packages("libcurl4-openssl-dev")
Installing package into ‘/home/lau/R/x86_64-pc-linux-gnu-library/3.3’
(as ‘lib’ is unspecified)
Warning in install.packages :
package ‘libcurl4-openssl-dev’ is not available (for R version 3.3.1)
为什么？怎么了？我该如何解决？
当我使用Xubuntu 16.04时还可以。但是现在我在Kubuntu 16.10上。
有任何想法吗？
最佳答案
libcurl4-openssl-dev不是R包，而是linux库。
在控制台中：
sudo apt-get install libcurl4-openssl-dev
注意：您需要使用sudo功能。
次佳答案
Linux版本是：CentOS Linux版本7.3.1611(核心)
就我而言，我试图安装R包：devtools
------------------------- ANTICONF ERROR ---------------------------
Configuration failed because libcurl was not found. Try installing:
* deb: libcurl4-openssl-dev (Debian, Ubuntu, etc)
* rpm: libcurl-devel (Fedora, CentOS, RHEL)
* csw: libcurl_dev (Solaris)
If libcurl is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a libcurl.pc file. If pkg-config
is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:
R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'
我检查了$PATH，’pkg-config’在PATH中。但是PKG_CONFIG_PATH(/usr/local/lib/pkgconfig/)中没有libcurl.pc文件。
这是我解决问题的方法。
su
wget https://github.com/curl/curl/releases/download/curl-7_55_0/curl-7.55.0.tar.gz
./configure
make
make install
此后，我在PKG_CONFIG_PATH(/usr/local/lib/pkgconfig/)中看到libcurl.pc文件。