From 6a181356bdbde946a2a9f15d33578b88ef5f3443 Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Thu, 17 May 2012 21:13:23 -0700
Subject: [PATCH] Fix gzgetc undefine when Z_PREFIX set [Turk].

---
 gzread.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gzread.c b/gzread.c
index 3493d34..8ace830 100644
--- a/gzread.c
+++ b/gzread.c
@@ -378,7 +378,11 @@ int ZEXPORT gzread(file, buf, len)
 }
 
 /* -- see zlib.h -- */
-#undef gzgetc
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#else
+#  undef gzgetc
+#endif
 int ZEXPORT gzgetc(file)
     gzFile file;
 {