default_pre_build      &&
cd  $SOURCE_DIRECTORY  &&
patch -p0 < $SCRIPT_DIRECTORY/png_header_fix.patch &&
# libpng-1.5 fix from https://raw.githubusercontent.com/KaOSx/main/master/libwmf/libwmf-0.2.8.4-libpng-1.5.patch.gz
patch -p1 <<'EOT'
diff -urN libwmf-0.2.8.4.old/src/ipa/ipa/bmp.h libwmf-0.2.8.4/src/ipa/ipa/bmp.h
--- libwmf-0.2.8.4.old/src/ipa/ipa/bmp.h	2011-05-23 19:14:23.000000000 +0200
+++ libwmf-0.2.8.4/src/ipa/ipa/bmp.h	2011-05-23 19:15:11.000000000 +0200
@@ -66,7 +66,7 @@
 		return;
 	}
 
-	if (setjmp (png_ptr->jmpbuf))
+	if (setjmp(png_jmpbuf(png_ptr)))
 	{	WMF_DEBUG (API,"Failed to write bitmap as PNG! (setjmp failed)");
 		png_destroy_write_struct (&png_ptr,&info_ptr);
 		wmf_free (API,buffer);
EOT