* No need automake to build.
* clean up subst patterns, not to break shell script.
* more 32bit and 64bit patterns
* pass down prefered environments to build.
* DL_LIBS came from dlopen.buildlinnk3.mk, need to buildlink.
lp_solve is a Mixed Integer Linear Programming (MILP) solver.
It is a free linear (integer) programming solver based on the
revised simplex method and the Branch-and-bound method for the
integers. lp_solve solves pure linear, (mixed) integer/binary,
semi-continuous and special ordered sets (SOS) models.