Checking if your kit is complete... Warning: the following files are missing in your kit: make_const.c Please inform the author. WARNING: Setting ABSTRACT via file 'lib/Y.pm' failed at C:/cpanrun-5.8/build/5-8-0/lib/ExtUtils/MakeMaker.pm line 627 Writing Makefile for Y cl -I/usr/local/include make_const.c -o make_const Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8804 for 80x86 Copyright (C) Microsoft Corp 1984-1998. All rights reserved. make_const.c make_const.c(5) : fatal error C1083: Cannot open include file: 'Y/const.h': No such file or directory Could not compile at Makefile.PL line 36, line 374.