Just for fun, I tried to build and run perl1 on Windows XP and Cygwin (gcc 3.4.4). There were some simple tweaks necessary (patch attached), but the result is not bad. Only 1 test is failing, but I haven't checked why. C:\usr\src\perl-1.0_16\t>..\perl TEST base.cond...ok base.if...ok base.lex...ok base.pat...ok base.term...ok comp.cmdopt...ok comp.cpp...ok comp.decl...ok comp.multiline...ok comp.term...ok cmd.elsif...ok cmd.for...ok cmd.mod...ok cmd.subval...ok cmd.while...ok io.argv...ok io.fs...ok io.inplace...cat: .a: No such file or directory cat: .b: No such file or directory cat: .c: No such file or directory FAILED on test 1 io.print...ok io.tell...ok op.append...ok op.auto...ok op.chop...ok op.cond...ok op.crypt...ok op.do...ok op.each...ok op.eval...ok op.exec...ok op.exp...ok op.flip...ok op.fork...ok op.goto...ok op.int...ok op.join...ok op.list...ok op.magic...ok op.oct...ok op.ord...ok op.pat...ok op.push...ok op.repeat...ok op.sleep...ok op.split...ok op.sprintf...ok op.stat...ok op.subst...ok op.time...ok op.unshift...ok Failed 1 test. Ron