Source: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=649554
--- devil-1.7.8.orig/src-IL/src/il_icon.c
+++ devil-1.7.8/src-IL/src/il_icon.c
@@ -525,7 +525,11 @@
 
 	// Expand low-bit-depth grayscale images to 8 bits
 	if (ico_color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) {
+#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
+		png_set_expand_gray_1_2_4_to_8(ico_png_ptr);
+#else
 		png_set_gray_1_2_4_to_8(ico_png_ptr);
+#endif
 	}
 
 	// Expand RGB images with transparency to full alpha channels
only in patch2:
unchanged:
--- devil-1.7.8.orig/src-IL/src/il_png.c
+++ devil-1.7.8/src-IL/src/il_png.c
@@ -278,7 +278,11 @@
 
 	// Expand low-bit-depth grayscale images to 8 bits
 	if (png_color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) {
+#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
+		png_set_expand_gray_1_2_4_to_8(png_ptr);
+#else
 		png_set_gray_1_2_4_to_8(png_ptr);
+#endif
 	}
 
 	// Expand RGB images with transparency to full alpha channels