Nrpe install error: checking for SSL headers... configure: error: Cannot find ssl headers

checking for SSL headers… configure: error: Cannot find ssl headers

This error happens because of the absence of openssl development libraries and can be resolved by installing the same.

For RHEL/Centos systems,

#yum install openssl-devel

For Debian/Ubuntu systems,

#apt-get install libssl-dev

Now retry the installation and it will work without any issues.

That's all…