commit 414d7b5f7d6eeb8aacbffd1288d07518c2e8a539
author John Bowler <jbowler@acm.org> Thu Feb 06 11:32:57 2014 -0600
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Thu Feb 06 11:39:25 2014 -0600
tree f5d0f1535853b9cef2a38e2c6f45413e48dc9c81
parent 685dff485e70cbad6f10cdc1c97c6f0d0c48f73c

[libpng16] Backport recent changes from libpng-1.7.0beta30 and beta31.

png.h

diff --git a/png.h b/png.h
index 63365d5..2d056af 100644
--- a/png.h
+++ b/png.h
@@ -2520,11 +2520,15 @@
 
 #ifdef PNG_INFO_IMAGE_SUPPORTED
 /* The "params" pointer is currently not used and is for future expansion. */
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 PNG_EXPORT(178, void, png_read_png, (png_structrp png_ptr, png_inforp info_ptr,
     int transforms, png_voidp params));
+#endif
+#ifdef PNG_WRITE_SUPPORTED
 PNG_EXPORT(179, void, png_write_png, (png_structrp png_ptr, png_inforp info_ptr,
     int transforms, png_voidp params));
 #endif
+#endif
 
 PNG_EXPORT(180, png_const_charp, png_get_copyright,
     (png_const_structrp png_ptr));