compile-ijk.sh error

[boluomeng]

执行compile-ijk.sh脚本报CLOCK_MONOTONIC_HR未定义错误，是否需要安装其它库。我把CLOCK_MONOTONIC_HR改为5可以正确执行。
iMac:android Lee$ sh compile-ijk.sh
[armeabi-v7a] Prebuilt : libffmpeg.so <= /Users/Lee/Test/ijkplayer-android-master/android/build/ffmpeg-armv7a/output/
[armeabi-v7a] Install : libffmpeg.so => libs/armeabi-v7a/libffmpeg.so
[armeabi-v7a] Compile thumb : ijkplayer <= ff_cmdutils.c
[armeabi-v7a] Compile thumb : ijkplayer <= ff_ffplay.c
[armeabi-v7a] Compile thumb : ijkplayer <= ijkplayer.c
[armeabi-v7a] Compile thumb : ijkplayer <= ijkplayer_android.c
[armeabi-v7a] Compile thumb : ijkplayer <= ijkplayer_jni.c
[armeabi-v7a] Prebuilt : libstlport_shared.so <= /sources/cxx-stl/stlport/libs/armeabi-v7a/
[armeabi-v7a] Compile thumb : ijkutil_c <= loghelp.c
[armeabi-v7a] StaticLibrary : libijkutil_c.a
[armeabi-v7a] Compile++ thumb: ijkutil_android_cpp <= jnihelp.cpp
[armeabi-v7a] StaticLibrary : libijkutil_android_cpp.a
[armeabi-v7a] SharedLibrary : libijkutil.so
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_aout.c
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_audio.c
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_error.c
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_mutex.c
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_stdinc.c
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_thread.c
[armeabi-v7a] Compile thumb : ijksdl <= ijksdl_timer.c
/Users/Lee/Test/ijkplayer-android-master/android/ijkmediaplayer/jni/ijkmedia/ijksdl/ijksdl_timer.c: In function 'SDL_GetTickHR':
/Users/Lee/Test/ijkplayer-android-master/android/ijkmediaplayer/jni/ijkmedia/ijksdl/ijksdl_timer.c:57:19: error: 'CLOCK_MONOTONIC_HR' undeclared (first use in this function)
clock_gettime(CLOCK_MONOTONIC_HR, &now);
^
/Users/Lee/Test/ijkplayer-android-master/android/ijkmediaplayer/jni/ijkmedia/ijksdl/ijksdl_timer.c:57:19: note: each undeclared identifier is reported only once for each function it appears in
make: *** [/Users/Lee/Test/ijkplayer-android-master/android/ijkmediaplayer/obj/local/armeabi-v7a/objs/ijksdl/ijksdl_timer.o] Error 1

[bbcallen]

fixed: 6d73766

Thanks