Not able to build latest 'master' on ubuntu 20.04

Description of problem:

I wanted to try PQC support added recently . I have been trying to build latest master branch on ubuntu 20.04 but getting below error-

eaas@eaas-PC:~/gnutls$ sudo ./configure --prefix=/usr/lib64 . . . checking for getrandom... yes checking for KERN_ARND... no checking for getentropy... no checking for NETTLE... no configure: error:

Libnettle 3.6 was not found.

I have nettle installed -

eaas@eaas-PC:~/gnutls$ ls /usr/lib64/ bin ld-linux-x86-64.so.2 libhogweed.so libhogweed.so.6.0 libnettle.so.8 pkgconfig include lib64 libhogweed.so.6 libnettle.so libnettle.so.8.0 share

Version of gnutls used:

Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)

How reproducible:

Steps to Reproduce:

• one
• two
• three

Actual results:

Not able to build

Expected results: