Fix compatibility with Xfce 4.7+

Make the dependency on libxfcegui4 explicit, instead of relying on some
other component to link to it for us.

Fixes bug 6466.

configure.in.in

@@ -54,6 +54,9 @@ AC_SUBST(SOLLIBS)
 dnl configure the panel plugin
 XDT_CHECK_PACKAGE([LIBXFCE4PANEL], [libxfce4panel-1.0], [4.3.20])
 
+dnl configure the libxfcegui4
+XDT_CHECK_PACKAGE([LIBXFCEGUI4], [libxfcegui4-1.0], [4.4.0])
+
 dnl Check for i18n support
 XDT_I18N([@LINGUAS@])
 

panel-plugin/Makefile.am

@@ -16,11 +16,13 @@ xfce4_netload_plugin_SOURCES =						\
 
 xfce4_netload_plugin_CFLAGS =						\
 	-DPACKAGE_LOCALE_DIR=\"$(localedir)\"				\
-	@LIBXFCE4PANEL_CFLAGS@
+	@LIBXFCE4PANEL_CFLAGS@				\
+	@LIBXFCEGUI4_CFLAGS@
 
-xfce4_netload_plugin_LDFLAGS =						\
+xfce4_netload_plugin_LDADD =						\
 	@SOLLIBS@                                   			\
-	@LIBXFCE4PANEL_LIBS@
+	@LIBXFCE4PANEL_LIBS@                                   			\
+	@LIBXFCEGUI4_LIBS@
 
 # .desktop file
 #