I recently started to use POCO C++ libraries to create a simple mail client and I needed to use `SecureSMTPClientSession` class, but compiler reports 

```
Poco/Net/SecureSMTPClientSession.h: No such file or directory

```

When I searched trough installed libraries I noticed that `NETSSL_OPENSSL` missing although it exists in originally downloaded file from [pocoproject.org](http://pocoproject.org).

My installation steps followed `INSTALL` instructions

```
./configure
make
make install

```

So is there a way to manually install `NETSSL_OPENSSL` library?

Please if anybody knew to write a steps.

Thank you.