diff -ur zlib-1.2.11.orig/gzguts.h zlib-1.2.11/gzguts.h --- zlib-1.2.11.orig/gzguts.h Sun Jan 01 16:37:10 2017 +++ zlib-1.2.11/gzguts.h Mon Jan 16 07:53:25 2017 @@ -39,7 +39,7 @@ # include #endif -#if defined(_WIN32) || defined(__CYGWIN__) +#if defined(_WIN32) # define WIDECHAR #endif