Nut upsuser - Aug 2022 - nut 2.8.0 ./configure on Debian 11 cannot see OpenSSL

I would like to test the new TLS support in nut 2.8.0, but Debian 11 only 
provides nut 2.7.4.  So I downloaded nut-2.8.0.tar.gz , unpacked and read the 
instructions:  "Briefly, the shell command './configure && make
&& make install'
should configure, build, and install this package."

I tried ./configure and it doesn't detect openssl even though OpenSSL 1.1.1n
is
installed.

I cannot find any -dev files for OpenSSL that often have to be installed to 
build software.

Has anyone succeeded in compiling 2.8.0 on Debian 11 with OpenSSL?

Roger

On Tue, 16 Aug 2022, Roger Price wrote:
> I cannot find any -dev files for OpenSSL that often have to be installed to
> build software.
Synaptic finally found libssl-dev and the configuration summary now shows:

    build serial drivers: yes
    build USB drivers: yes (libusb-1.0)
    enable SSL support: yes (OpenSSL)

Everything else is "no".

Nevertheless, has anyone achieved a full build of 2.8.0 on Debian 11?

Roger