Required extensions to build:
openssl-dev
lzo-dev
Linux-PAM-dev

Configured with only the basic set of recommended x86 flags:
export CFLAGS="-march=i486 -mtune=i686 -Os -pipe"
export CXXFLAGS="-march=i486 -mtune=i686 -Os -pipe"
export LDFLAGS="-Wl,-O1"