Problems installing the devtools package

As per damienfrancois's suggestion, I installed libcurl4-gnutls-dev and the problem was solved.

EDIT (@dardisco)

In your shell:

apt-get -y build-dep libcurl4-gnutls-devapt-get -y install libcurl4-gnutls-dev

r package devtools

If you are using Ubuntu/Linux:

sudo apt-get install libcurl4-openssl-dev libssl-dev

r package devtools

In case if you are using CentOS:

Try:

sudo yum -y install libcurl libcurl-devel

CodeHunter