ffmpeg configure: ERROR: davs2 >= 1.5.115 not found using pkg-config

[hybase]

FFMPEG configure meet with ERROR: davs2 >= 1.5.115 not found using pkg-config.
(execute version.sh in tar file only get version 1.5.0).
root@ubuntu:/modules/davs2# ./version.sh
#define DAVS2_BUILD 15
#define DAVS2_POINTVER "1.5.0"
root@ubuntu:/modules/davs2#

how can I solve it? the code master (date: 2018.11.06)

[Falei LUO]

A duplicate issue. pkuvcl/buildFFmpegAVS2#4

Thanks.

[hybase]

Thanks！