What do you make of this?  I have MinGW installed, but not Cygwin on my Win7x64.

Steve

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C:\Users\Steve\Desktop>type test.scm
(declare (block))

(define (f x)
   (+ (* x x)
      (- x 1)))

(define (g y)
   (f (f y)))

(pp 123)

C:\Users\Steve\Desktop>gsc test.scm
gcc: error: unrecognized command line option '-mno-cygwin'

C:\Users\Steve\Desktop>