我想从一个使用fromJSON的远程服务器拉一些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')
所以我试图安装它：
> 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'
然后我试图安装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？ 出了什么问题？ 我该如何解决？
当我在Xubuntu 16.04上时是可以的。 但是现在我在Kubuntu 16.10上。
有任何想法吗？
libcurl4-openssl-dev不是一个R包，而是一个linux库。 在控制台中输入sudo apt-get install libcurl4-openssl-dev 。 当然你需要sudo权力。
Linux版本是：CentOS Linux版本7.3.1611（核心）
在我的情况下，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=...' ------------------------- 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 。 但PKG_CONFIG_PATH（/ usr / local / lib / pkgconfig /）中没有libcurl.pc文件。
这是我如何解决这个问题。 su wget https://github.com/curl/curl/releases/download/curl-7_55_0/curl-7.55.0.tar.gz ./configure make make install
在此之后，我看到了PKG_CONFIG_PATH（/ usr / local / lib / pkgconfig /）中的libcurl.pc文件。
希望这可以帮助。