From 838e2dda4f7962fe5be454cc37d564cbbfaac791 Mon Sep 17 00:00:00 2001
From: Mark Brand <mabrand@mabrand.nl>
Date: Thu, 3 Mar 2011 21:00:08 +0100
Subject: package gdal: libpng 1.5 compatibility

---
 src/gdal-1-png.patch | 36 ++++++++++++++++++++++++++++++++++++
 src/gdal.mk          |  2 +-
 2 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 src/gdal-1-png.patch

diff --git a/src/gdal-1-png.patch b/src/gdal-1-png.patch
new file mode 100644
index 0000000..357e2dd
--- /dev/null
+++ b/src/gdal-1-png.patch
@@ -0,0 +1,36 @@
+This file is part of mingw-cross-env.
+See doc/index.html for further information.
+
+http://trac.osgeo.org/gdal/changeset/21526
+Index: /branches/1.8/gdal/frmts/png/pngdataset.cpp
+===================================================================
+--- a/frmts/png/pngdataset.cpp	(revision 21032)
++++ b/frmts/png/pngdataset.cpp	(revision 21526)
+@@ -1316,5 +1316,5 @@
+     */
+    check = (png_size_t)VSIFReadL(data, (png_size_t)1, length,
+-                                 (VSILFILE*)png_ptr->io_ptr);
++                                 (VSILFILE*)png_get_io_ptr(png_ptr));
+ 
+    if (check != length)
+@@ -1331,5 +1331,5 @@
+    png_uint_32 check;
+ 
+-   check = VSIFWriteL(data, 1, length, (VSILFILE*)(png_ptr->io_ptr));
++   check = VSIFWriteL(data, 1, length, (VSILFILE*)png_get_io_ptr(png_ptr));
+ 
+    if (check != length)
+@@ -1342,5 +1342,5 @@
+ static void png_vsi_flush(png_structp png_ptr)
+ {
+-    VSIFFlushL( (VSILFILE*)(png_ptr->io_ptr) );
++    VSIFFlushL( (VSILFILE*)png_get_io_ptr(png_ptr) );
+ }
+ 
+@@ -1358,5 +1358,5 @@
+     // semantics.  Ugg. 
+ 
+-    jmp_buf* psSetJmpContext = (jmp_buf*) png_ptr->error_ptr;
++    jmp_buf* psSetJmpContext = (jmp_buf*) png_get_error_ptr(png_ptr);
+     if (psSetJmpContext)
+     {
diff --git a/src/gdal.mk b/src/gdal.mk
index ba18b40..4a23f46 100644
--- a/src/gdal.mk
+++ b/src/gdal.mk
@@ -32,7 +32,7 @@ define $(PKG)_BUILD
         --with-pam \
         --without-threads \
         --with-libz='$(PREFIX)/$(TARGET)' \
-        --with-png=internal \
+        --with-png='$(PREFIX)/$(TARGET)' \
         --with-libtiff='$(PREFIX)/$(TARGET)' \
         --with-geotiff='$(PREFIX)/$(TARGET)' \
         --with-jpeg='$(PREFIX)/$(TARGET)' \
-- 
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