build: Correctly link to gthread

https://bugzilla.gnome.org/show_bug.cgi?id=667412

configure.in

@@ -180,6 +180,11 @@ int main ()
 LIBS="$LIBS_save"
 
 
+dnl gthread
+PKG_CHECK_MODULES([GTHREAD], [gthread-2.0])
+AC_SUBST([GTHREAD_LIBS])
+AC_SUBST([GTHREAD_CFLAGS])
+
 dnl GTKMM
 PKG_CHECK_MODULES([GTKMM], [gtkmm-2.4 > 2.8])
 AC_SUBST([GTKMM_LIBS])

src/Makefile.am

@@ -1,4 +1,5 @@
 INCLUDES =						\
+	$(GTHREAD_CFLAGS) 				\
 	$(GTKMM_CFLAGS) 				\
 	-DGPARTED_DATADIR=\""$(datadir)"\"			\
 	-DGNOMELOCALEDIR=\""$(datadir)/locale"\"
@@ -64,7 +65,7 @@ gpartedbin_SOURCES = \
 	ufs.cc				\
 	xfs.cc
 
-gpartedbin_LDFLAGS = -lparted -lgthread-2.0 
+gpartedbin_LDFLAGS = -lparted
 
-gpartedbin_LDADD = $(GTKMM_LIBS)
+gpartedbin_LDADD = $(GTHREAD_LIBS) $(GTKMM_LIBS)