Fix Makefile
Fix Makefile

baidu/bfs,imotai/bfs,yvxiang/dfs,myawan/bfs-1,bluebore/dfs,yvxiang/coverage_for_bfs,baidu/bfs,bluebore/bfs,yvxiang/dfs,bluebore/dfs,linyvxiang/dfs,myawan/bfs-1,lylei/dfs,yvxiang/coverage_for_bfs,bluebore/dfs,yvxiang/dfs,yvxiang/dfs,lylei/dfs,lylei/dfs,linyvxiang/dfs,linyvxiang/dfs,bluebore/bfs,yvxiang/coverage_for_bfs,00k/ToyDFS,baidu/bfs,imotai/bfs,imotai/bfs,myawan/bfs-1,bluebore/bfs,baidu/bfs,myawan/bfs-1,00k/ToyDFS,lylei/dfs,yvxiang/coverage_for_bfs