--- zconf.h.orig	2022-10-20 11:06:04 +0000
+++ zconf.h	2022-10-20 11:06:56 +0000
@@ -487,7 +487,7 @@
 #endif
 #ifndef Z_SOLO
 #  if defined(Z_HAVE_UNISTD_H)
-#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
+//#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
 #    ifdef VMS
 #      include <unixio.h>       /* for off_t */
 #    endif