I am trying to install RCurl on OS X 10.12.6 but get the following error:
Error: package or namespace load failed for ‘RCurl’ in dyn.load(file, DLLpath = DLLpath, ...): unable to load shared object '/Users/nick/Library/R/3.4/library/RCurl/libs/RCurl.so': dlopen(/Users/nick/Library/R/3.4/library/RCurl/libs/RCurl.so, 6): Library not loaded: @rpath/libcurl.4.dylib Referenced from: /Users/nick/Library/R/3.4/library/RCurl/libs/RCurl.so Reason: image not found Error: loading failed Execution halted ERROR: loading failed * removing ‘/Users/nick/Library/R/3.4/library/RCurl’ The downloaded source packages are in ‘/private/var/folders/hx/9xx9fwq91t95k45dzlmzxfy40000gp/T/Rtmp14zSi1/downloaded_packages’ Warning message: In install.packages("RCurl") : installation of package ‘RCurl’ had non-zero exit status
This error has been discussed a bit already, but the solutions are all specific to linux and I don't think they are relevant to OS X. I did try installing the homebrew version of
curl but that didn't help.
Any ideas? I think that more debugging information would be helpful, but I'm not sure what else to provide.
Thanks in advance! Nick
Looks like it's expecting
libcurl.4.dylib in your
I think others have encountered the same issue so the solution should be in here somewhere:
brew unlink Rsolution
i figured out. i was all about the swap value.
there are several web pages that advice to decrease the default swap use in order to speed up ubuntu. what i did to fix the problem.
in the terminal...
#know the swap value cat /proc/sys/vm/swappiness 10 # access the swap configuration gksudo leafpad /etc/sysctl.conf # increase the swap usage to 30 (default is 60) vm.swappiness=30
then, i rebooted. and installed the packages happily without any problems.
you can do it with pacakge
roauth. i assume you have registered your app with twitter and have an api key. i pieced this together from other questions on (that question and associated answers also contains some links to other contributing questions) and the documentation for package
library(rcurl) library(twitter) library(roauth) requesturl <- "https://api.twitter.com/oauth/request_token" accessurl = "http://api.twitter.com/oauth/access_token" authurl = "http://api.twitter.com/oauth/authorize" consumerkey = "myconsumerkeystring" consumersecret = "myconsumersecretstring" cred <- oauthfactory$new(consumerkey=consumerkey, consumersecret=consumersecret, requesturl=requesturl, accessurl=accessurl, authurl=authurl) #the next command provides a url which you will need to copy and paste into your favourite browser #assuming you are logged into twitter you will then be provided a pin number to type into the r command line cred$handshake(cainfo = system.file("curlssl", "cacert.pem", package = "rcurl") ) # checks that you are authorised registertwitteroauth(cred)
i believe that use of the streaming api is handled by the package
you find the answer in your error message:
------------------------ anticonf error --------------------------- configuration failed because libcurl was not found. try installing: * deb: libcurl4-openssl-dev (debian, ubuntu, etc) .... ....
copy and paste the following to your terminal and than try installing
tidyverse again. should solve the problem.
# required for many packages sudo apt-get install -y libxml2-dev libcurl4-openssl-dev libssl-dev
coming back to this issue i just wanted to point out that if you are still using rcurl, you should be using httr (which uses curl) instead.
i have confirmed that using
config(cainfo="/topic/path/to/certificate") with httr connections will work as intended.