tce-load -i compiletc openssl-1.1.1-dev libpcap-dev lua-dev pcre-dev libssh2-dev liblinear-dev

http://nmap.org/dist/nmap-7.80.tar.bz2

cd nmap-7.80

CC="gcc -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --disable-static --with-liblua=included

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [1m 27.23s]
sudo make install

Configured with: nping openssl zlib libssh2 lua ncat
Configured without: localdirs ndiff zenmap nmap-update