unix compiler symbol not in NetBSD? (zlib's minunzip)

[Drew Scott Daniels <umdanie8@cc.UManitoba.CA>]

Any comments?

     Drew Daniels

--- zlib-1.2.1.orig/debian/patches/010_NetBSD_minizip
+++ zlib-1.2.1/debian/patches/010_NetBSD_minizip
@@ -0,0 +1,14 @@
+This patch is safe, because all Debian systems should be POSIX compliant
+enough to have <unistd.h> and related headers, whether or not they have
+'unix' as a compiler symbol (NetBSD, in particular, lacks it).
+
+diff -ur zlib-1.1.4.orig/contrib/minizip/Makefile zlib-1.1.4/contrib/minizip/Makefile
+--- zlib-1.1.4.orig/contrib/minizip/Makefile	2002-10-10 04:24:24.000000000 +0000
++++ zlib-1.1.4/contrib/minizip/Makefile	2002-10-10 04:25:09.000000000 +0000
+@@ -1,5 +1,5 @@
+ CC=cc
+-CFLAGS=-O2 -g -I../..
++CFLAGS=-O2 -g -I../.. -Dunix
+
+ UNZ_OBJS = miniunz.o unzip.o
+ ZIP_OBJS = minizip.o zip.o