tce-load -i compiletc libssh2-dev lua-dev libpcap-dev pcre-dev liblinear-dev python2.7-dev

wget https://nmap.org/dist/nmap-7.92.tar.bz2

cd nmap-7.92

CC="gcc -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe" CXX="g++ -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --disable-static

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

make [6m 30.37s]
sudo make install

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