编译telepresence：fatal error: libavfilter/avfiltergraph.h: 没有那个文件或目录

搜索了一下：

./doubango/thirdparties/iphone/include/libavfilter/avfiltergraph.h
./doubango/thirdparties/mac/include/libavfilter/avfiltergraph.h
./doubango/thirdparties/android/common/include/libavfilter/avfiltergraph.h
./doubango/thirdparties/win32/include/libavfilter/avfiltergraph.h

怎么没有LINUX的？把win32下的复制过去，编译通过。