[rygel] data: Fix desktop file generation

[Jens Georg <jensgeorg src gnome org>]

commit a4a1aa967d793a4366cae8967cdbdd978d7ba950
Author: Jens Georg <mail jensge org>
Date:   Tue Aug 16 17:23:36 2016 +0200

    data: Fix desktop file generation
    
    Signed-off-by: Jens Georg <mail jensge org>

 data/Makefile.am |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/data/Makefile.am b/data/Makefile.am
index 4e4f54d..bbd6658 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -30,13 +30,12 @@ $(systemdservice_DATA): rygel.service.in Makefile
 desktop_in_files = $(srcdir)/rygel.desktop.in $(srcdir)/rygel-preferences.desktop.in
 desktop_DATA = rygel.desktop rygel-preferences.desktop
 
-$(desktop_in_files): $(srcdir)/rygel.desktop.in.in $(srcdir)/rygel-preferences.desktop.in.in
-       $(AM_V_GEN) $(MSGFMT) --desktop --template $< -d $(top_srcdir)/po -o $@
-
-# Substitute variables in a Desktop Entry file.
-$(desktop_DATA): $(desktop_in_files)
+%.desktop.in : %.desktop.in.in
        $(AM_V_GEN) sed -e 's|@VERSION[@]|$(VERSION)|g' $< > $@
 
+%.desktop : %.desktop.in
+       $(AM_V_GEN) $(MSGFMT) --desktop --template $< -d $(top_srcdir)/po -o $@
+
 preset_DATA = $(srcdir)/presets/avenc_aac.prs \
        $(srcdir)/presets/avenc_mp2.prs \
        $(srcdir)/presets/avenc_mpeg2video.prs \