I tried to compile gmnisrv on Ubuntu 20.04, then ran configure with /usr
as the prefix, and I got this:

    Checking for -g... yes
    Checking for -std=c11... yes
    Checking for -D_XOPEN_SOURCE=700... yes
    Checking for -Wall... yes
    Checking for -Wextra... yes
    Checking for -Werror... yes
    Checking for -pedantic... yes
    Checking for OpenSSL... NOT FOUND
    Tried pkg-config libssl

And when I run make, it gives this:

    Makefile:5: .build/cppcache: No such file or directory
    make: *** No rule to make target '.build/cppcache'.  Stop.

I already have OpenSSL installed, and I tried installing libssl-dev to
see if that would fix anything, but it gives the same error message.

I tried looking in the configure file and in Makefile to see if it
checked for OpenSSL, but I couldn't find any mention of it. What should
I do?