package wxwidgets: libpng 1.5 compatibility

src/wxwidgets-1-png.patch

@@ -0,0 +1,39 @@
+This file is part of mingw-cross-env.
+See doc/index.html for further information.
+
+http://trac.wxwidgets.org/changeset/67009
+Index: /wxWidgets/branches/WX_2_8_BRANCH/src/common/imagpng.cpp
+===================================================================
+--- a/src/common/imagpng.cpp (revision 60875)
++++ b/src/common/imagpng.cpp (revision 67009)
+@@ -530,5 +530,5 @@
+                           (
+                             PNG_LIBPNG_VER_STRING,
+-                            (voidp) NULL,
++                            NULL,
+                             wx_png_error,
+                             wx_png_warning
+@@ -587,14 +587,17 @@
+     if (color_type == PNG_COLOR_TYPE_PALETTE)
+     {
+-        const size_t ncolors = info_ptr->num_palette;
++        int ncolors = 0;
++        png_colorp palette;
++        png_get_PLTE( png_ptr, info_ptr, &palette, &ncolors);
+         unsigned char* r = new unsigned char[ncolors];
+         unsigned char* g = new unsigned char[ncolors];
+         unsigned char* b = new unsigned char[ncolors];
+-
+-        for (size_t j = 0; j < ncolors; j++)
++        int j;
++
++        for (j = 0; j < ncolors; j++)
+         {
+-            r[j] = info_ptr->palette[j].red;
+-            g[j] = info_ptr->palette[j].green;
+-            b[j] = info_ptr->palette[j].blue;
++            r[j] = palette[j].red;
++            g[j] = palette[j].green;
++            b[j] = palette[j].blue;
+         }
+ 

src/wxwidgets.mk

@@ -37,7 +37,7 @@ define $(PKG)_BUILD
         --with-themes=all \
         --with-msw \
         --with-opengl \
-        --with-libpng=builtin \
+        --with-libpng=sys \
         --with-libjpeg=sys \
         --with-libtiff=sys \
         --with-regex=yes \
@@ -65,6 +65,8 @@ define $(PKG)_BUILD
 
     # build the wxWidgets variant without unicode support
     cd '$(1)' && $(call UNPACK_PKG_ARCHIVE,wxwidgets)
+    $(foreach PKG_PATCH,$(sort $(wildcard $(TOP_DIR)/src/wxwidgets-*.patch)),
+    (cd '$(1)/$(wxwidgets_SUBDIR)' && $(PATCH) -p1 -u) < $(PKG_PATCH))
     $(SED) -i 's,png_check_sig,png_sig_cmp,g'                       '$(1)/$(wxwidgets_SUBDIR)/configure'
     $(SED) -i 's,wx_cv_cflags_mthread=yes,wx_cv_cflags_mthread=no,' '$(1)/$(wxwidgets_SUBDIR)/configure'
     # wine confuses the cross-compiling detection, so set it explicitly
@@ -83,7 +85,7 @@ define $(PKG)_BUILD
         --with-themes=all \
         --with-msw \
         --with-opengl \
-        --with-libpng=builtin \
+        --with-libpng=sys \
         --with-libjpeg=sys \
         --with-libtiff=sys \
         --with-regex=yes \