build failed on ubuntu20.04

[bolunfeng]

cd wdt && cmake . && make

[100%] Built target wdt
/usr/bin/ld: libwdt_min.so: undefined reference to _ULx86_64_init_local' /usr/bin/ld: libfolly4wdt.so: undefined reference to folly::strlcpy(char*, char const*, unsigned long)'
/usr/bin/ld: libwdt_min.so: undefined reference to _Ux86_64_getcontext' /usr/bin/ld: libwdt_min.so: undefined reference to _ULx86_64_get_reg'
/usr/bin/ld: libwdt_min.so: undefined reference to `_ULx86_64_step'
collect2: error: ld returned 1 exit status

[bolunfeng]

ubuntu 20.04
g++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
cmake version 3.16.3
GNU Make 4.2.1