Tom's SAW code compiles and runs on Windows except for a few minor
modifications:

* There are various Windows ports of GCC.  See, for example, the mingw
  port at www.mingw.org.  Download and install it.

* In mingw, stdlib.h exists but srand48/drand48 do not.  One gets an
  undefined-symbol error at link time.

* I found rand48.c & rand48.h on the web; they are in this directory.
  (I needed to modify the C file to use ANSI function declarations rather
  than K&R-style function declarations.  The latter compile with gcc but
  not with g++.)

* You should put rand48.c and rand48.h along with the other .c and .h files
  you have.

* Any source file which calls srand48/drand48 should not #include <stdlib.h>.
  That file should instead #include "rand48.h".

* drand48.c should be added to the build script.

* On Windows, instead of creating a Makefile, you might instead simply create
  a batch file.  Name it, for example, build.cmd.  It should have the
  following lines in it, modified as necessary if you have a different
  version of Tom's code:

  g++ -c -O3 -Wall src/lib.c
  g++ -c -O3 -Wall src/walk.c
  g++ -c -O3 -Wall src/rwalk.c
  g++ -c -O3 -Wall src/point.c
  g++ -c -O3 -Wall src/rpoint.c
  g++ -c -O3 -Wall src/simul_saw_bridge.c
  g++ -c -O3 -Wall src/rand48.c
  g++ lib.o walk.o rwalk.o point.o rpoint.o simul_saw_bridge.o rand48.o -o simul_saw_bridge

  Then at the Windows commmand prompt (Start -> Run -> cmd) you can cd
  to your project directory, then simply type "build".

----------------------------------------------------------------
John Kerl
kerl.john.r@gmail.com
11-02-09