28章内容，编译报错；老师你是用的啥环境啊，内核版本多少？系统有镜像吗？

[tunayoyo]

/usr/bin/cmake --build /mnt/f/NetworkProgrammingPractice/Chapter28/cmake-build-debug --target poll-server-multithreads -- -j 2
[ 75%] Built target yolanda
[ 87%] Linking C executable ../bin/poll-server-multithreads
CMakeFiles/poll-server-multithreads.dir/poll-server-multithreads.c.o: In function onMessage': /mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:26: undefined reference to buffer_new'
/mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:27: undefined reference to buffer_readable_size' /mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:29: undefined reference to buffer_read_char'
/mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:29: undefined reference to buffer_append_char' /mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:31: undefined reference to tcp_connection_send_buffer'
CMakeFiles/poll-server-multithreads.dir/poll-server-multithreads.c.o: In function main': /mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:49: undefined reference to event_loop_init'
/mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:52: undefined reference to acceptor_init' /mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:56: undefined reference to tcp_server_init'
/mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:58: undefined reference to tcp_server_start' /mnt/f/NetworkProgrammingPractice/Chapter28/chap-28/poll-server-multithreads.c:61: undefined reference to event_loop_run'
collect2: error: ld returned 1 exit status
chap-28/CMakeFiles/poll-server-multithreads.dir/build.make:95: recipe for target 'bin/poll-server-multithreads' failed
make[3]: *** [bin/poll-server-multithreads] Error 1
CMakeFiles/Makefile2:179: recipe for target 'chap-28/CMakeFiles/poll-server-multithreads.dir/all' failed
make[2]: *** [chap-28/CMakeFiles/poll-server-multithreads.dir/all] Error 2
CMakeFiles/Makefile2:191: recipe for target 'chap-28/CMakeFiles/poll-server-multithreads.dir/rule' failed
make[1]: *** [chap-28/CMakeFiles/poll-server-multithreads.dir/rule] Error 2
Makefile:190: recipe for target 'poll-server-multithreads' failed
make: *** [poll-server-multithreads] Error 2