ffmpeg3.4移植arm时编译报错

horotororensu

报错显示gethrtime函数未定义，请问这种问题如何解决。configure配置如下：

./configure --prefix=/home/horo/arm/software/ffmpeg_arm --enable-cross-compile --cross-prefix=arm-none-linux-gnueabi- --arch=armel --target-os=linux --enable-gpl --enable-nonfree --extra-cflags="-I/home/horo/arm/software/fdkaac_arm/include -I/home/horo/arm/software/x264_arm/include" --extra-ldflags="-L/home/horo/arm/software/fdkaac_arm/lib -L/home/horo/arm/software/x264_arm/lib" --enable-libfdk-aac --enable-libx264 --pkg-config-flags=--static --extra-libs="-ldl -fpic -shared" --enable-shared --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver