Use Inkscape's "--export-file" option

--export-png was replaced by --export-file in new Inkscape

Related: #1767921

djvulibre-3.5.27-export-file.patch

@@ -0,0 +1,22 @@
+--- djvulibre-3.5.27/desktopfiles/Makefile.am
++++ djvulibre-3.5.27/desktopfiles/Makefile.am
+@@ -35,7 +35,7 @@ ${INKSCAPE} \
+ --without-gui \
+ --export-width=$${s} \
+ --export-height=$${s} \
+---export-png=$@ $<
++--export-file=$@ $<
+ endif
+ 
+ if HAVE_CONVERSION_CONVERT
+--- djvulibre-3.5.27/desktopfiles/Makefile.in
++++ djvulibre-3.5.27/desktopfiles/Makefile.in
+@@ -309,7 +309,7 @@ PNGICONS = \
+ @HAVE_CONVERSION_INKSCAPE_TRUE@--without-gui \
+ @HAVE_CONVERSION_INKSCAPE_TRUE@--export-width=$${s} \
+ @HAVE_CONVERSION_INKSCAPE_TRUE@--export-height=$${s} \
+-@HAVE_CONVERSION_INKSCAPE_TRUE@--export-png=$@ $<
++@HAVE_CONVERSION_INKSCAPE_TRUE@--export-file=$@ $<
+ 
+ @HAVE_CONVERSION_RSVG_TRUE@convert_icons_process = \
+ @HAVE_CONVERSION_RSVG_TRUE@s=`echo $@ | sed -e 's/[a-z]*\([0-9]*\).*/\1/'`; \

djvulibre.spec

@@ -3,7 +3,7 @@
 Summary: DjVu viewers, encoders, and utilities
 Name: djvulibre
 Version: 3.5.27
-Release: 16%{?dist}
+Release: 17%{?dist}
 License: GPLv2+
 URL: http://djvu.sourceforge.net/
 Source0: http://downloads.sourceforge.net/djvu/%{name}-%{version}.tar.gz
@@ -13,6 +13,7 @@ Patch2: djvulibre-3.5.27-buffer-overflow.patch
 Patch3: djvulibre-3.5.27-infinite-loop.patch
 Patch4: djvulibre-3.5.27-stack-overflow.patch
 Patch5: djvulibre-3.5.27-zero-bytes-check.patch
+Patch6: djvulibre-3.5.27-export-file.patch
 
 Requires(post): xdg-utils
 Requires(preun): xdg-utils
@@ -69,6 +70,7 @@ Development files for DjVuLibre.
 %patch3 -p1 -b .infinite-loop
 %patch4 -p1 -b .stack-overflow
 %patch5 -p1 -b .zero-bytes-check
+%patch6 -p1 -b .export-file
 
 
 %build 
@@ -176,6 +178,10 @@ fi
 
 
 %changelog
+* Fri Nov  8 2019 Marek Kasik <mkasik@redhat.com> - 3.5.27-17
+- Use Inkscape's "--export-file" option replacing "--export-png"
+- Related: #1767921
+
 * Thu Nov  7 2019 Marek Kasik <mkasik@redhat.com> - 3.5.27-16
 - Fix a crash due to missing zero-bytes check
 - Resolves: #1767921