Prebuilt BLACS libraries are provided for a variety of
architecture and message-passing library combinations.

   http://www.netlib.org/blacs/archives/index.html

Note that each gzip tar file contains the library archive AND the
Bmake.inc used to build the library.  Details of compiler flags,
etc. can be found in this make include file.
 
Questions/comments should be directed to blacs@cs.utk.edu.