tdb2: clean up makefile for tools

ccan/tdb2/tools/Makefile

@@ -1,8 +1,12 @@
-LDLIBS:=../../tdb2.o ../../hash.o ../../tally.o
+OBJS:=../../tdb2.o ../../hash.o ../../tally.o
 CFLAGS:=-I../../.. -Wall -g #-g -O3 #-g -pg
 LDFLAGS:=-L../../..
 
 default: tdbtorture tdbtool mktdb
 
+tdbtorture: tdbtorture.c $(OBJS)
+tdbtool: tdbtool.c $(OBJS)
+mktdb: mktdb.c $(OBJS)
+
 clean:
 	rm -f tdbtorture tdbtool mktdb