From c6b29ff896a013961b41375c7fdac94b20513ae0 Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
Date: Sun, 22 Feb 2015 19:39:17 -0600
Subject: [PATCH] [libpng16]  Put #ifdef/#endif around
 png_set_compression_level in pngwrite.c

---
 pngwrite.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pngwrite.c b/pngwrite.c
index 1a21aa3ad..f03aed2d9 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -2289,7 +2289,9 @@ png_image_write_main(png_voidp argument)
        * it about 50 times.  The speed-up in pngstest was about 10-20% of the
        * total (user) time on a heavily loaded system.
        */
+#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
       png_set_compression_level(png_ptr, 3);
+#endif
    }
 
    /* Check for the cases that currently require a pre-transform on the row