[libgnomekbd] build: Fix desktop file generation

[Piotr DrÄ…g <piotrdrag src gnome org>]

commit b218bb838a806accfc67cdf44fccc1041bb4ad31
Author: Piotr DrÄ…g <piotrdrag gmail com>
Date:   Tue Aug 1 23:08:34 2017 +0200

    build: Fix desktop file generation
    
    https://bugzilla.gnome.org/show_bug.cgi?id=778089

 libgnomekbd/Makefile.am |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/libgnomekbd/Makefile.am b/libgnomekbd/Makefile.am
index 577ed02..7419c53 100644
--- a/libgnomekbd/Makefile.am
+++ b/libgnomekbd/Makefile.am
@@ -108,13 +108,12 @@ desktopdir = $(datadir)/applications
 desktop_in_files = gkbd-keyboard-display.desktop.in
 desktop_DATA = gkbd-keyboard-display.desktop
 
-$(desktop_in_files): gkbd-keyboard-display.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 $@
+
 noinst_HEADERS = $(extra_nih) \
                  gkbd-config-private.h