Swirl: Cannot install on Ubuntu 16.04 R3.3.1

[darsp]

Please help if you are able.
I have searched online and re-installed R several times to no avail
I get the following:

install.packages("swirl")
Installing package into ‘/home/ds/R/x86_64-pc-linux-gnu-library/3.3’
(as ‘lib’ is unspecified)
also installing the dependencies ‘openssl’, ‘httr’

trying URL 'https://cran.rstudio.com/src/contrib/openssl_0.9.4.tar.gz'
Content type 'application/x-gzip' length 1165388 bytes (1.1 MB)

downloaded 1.1 MB

trying URL 'https://cran.rstudio.com/src/contrib/httr_1.2.1.tar.gz'
Content type 'application/x-gzip' length 133398 bytes (130 KB)

downloaded 130 KB

trying URL 'https://cran.rstudio.com/src/contrib/swirl_2.4.2.tar.gz'
Content type 'application/x-gzip' length 98565 bytes (96 KB)

downloaded 96 KB

• installing _source_ package ‘openssl’ ...
  ** package ‘openssl’ successfully unpacked and MD5 sums checked
  Using PKG_CFLAGS=
  Using PKG_LIBS=-lssl -lcrypto

------------------------- ANTICONF ERROR ---------------------------

Configuration failed because openssl was not found. Try installing:

• deb: libssl-dev (Debian, Ubuntu, etc)
• rpm: openssl-devel (Fedora, CentOS, RHEL)
• csw: libssl_dev (Solaris)
• brew: openssl (Mac OSX)

If openssl is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a openssl.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: configu

ERROR: configuration failed for package ‘openssl’

• removing ‘/home/ds/R/x86_64-pc-linux-gnu-library/3.3/openssl’
  Warning in install.packages :
  installation of package ‘openssl’ had non-zero exit status
  ERROR: dependency ‘openssl’ is not available for package ‘httr’
• removing ‘/home/ds/R/x86_64-pc-linux-gnu-library/3.3/httr’
  Warning in install.packages :
  installation of package ‘httr’ had non-zero exit status
  ERROR: dependency ‘httr’ is not available for package ‘swirl’
• removing ‘/home/ds/R/x86_64-pc-linux-gnu-library/3.3/swirl’
  Warning in install.packages :
  installation of package ‘swirl’ had non-zero exit status

[seankross]

Did you read https://github.com/swirldev/swirl/wiki/Installing-swirl-on-Linux ?

[darsp]

Thanks. Yes, I did when initially installing. I made sure to get the most recent version of R available (3.3.1), installed RStudio, and installed libcurl.
It was only when I tried to install swirl that I ran into problems.
It seems that R does not recognize that openssl is installed.

I had just done a clean install of Ubuntu, so R was being installed for the first time.

[seankross]

What happens if you try install.packages("openssl")?

[darsp]

Got it thanks!!!
I had been back and forth so many times and gotten the following ANTICONF ERROR, but thought that openssl was already installed via

4 on https://github.com/swirldev/swirl/wiki/Installing-swirl-on-Linux:

"Install libcurl.
This is required for the RCurl package, which swirl uses to download courses from the internet.
$ sudo apt-get install libcurl4-openssl-dev "
which led me to believe it had something to do with PATH

But your advice paid off. Thank you!

install.packages("openssl") led to this:

------------------------- ANTICONF ERROR ---------------------------
Configuration failed because openssl was not found. Try installing:

• deb: libssl-dev (Debian, Ubuntu, etc)
• rpm: openssl-devel (Fedora, CentOS, RHEL)
• csw: libssl_dev (Solaris)
• brew: openssl (Mac OSX)
  If openssl is already installed, check that 'pkg-config' is in your
  PATH and PKG_CONFIG_PATH contains a openssl.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=..

So then to linux prompt:
$ sudo apt-get install libssl-dev

and then back to R
install.packages("openssl")
which was successful
then
install.packages("swirl")

• DONE (swirl)
  and finally:

library(swirl)

| Hi! Type swirl() when you are ready to begin.

:)

[seankross]

Yay awesome! Let me know if you run into any other issues.

[haebrys]

thanks very much, I'll just comment this so maybe the search improves
worked great on linux mint sylvia