我正在尝试使用 fromJSON 从远程服务器获取一些 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)
为什么出现这种情况？出了什么问题？我该如何解决？
在Xubuntu 16.04上时一切正常，但现在我使用的是Kubuntu 16.10。
有什么想法吗？
libcurl4库并通过Eddy安装并不能解决我的问题，这让我感到困惑。然而，通过控制台安装它（如接受的答案中建议的那样）确实有效。我猜我不太了解Linux，不知道为什么这些方法会有所不同。 - DirtStats