Can't compile on ubuntu 22.04

[tonyxforce]

cc -g -Wall `pkg-config --cflags libavformat libavcodec libavutil` -pthread -c segment.c
cc -g -Wall `pkg-config --cflags libavformat libavcodec libavutil` -pthread -c buffer.c
cc -g -Wall `pkg-config --cflags libavformat libavcodec libavutil` -pthread -c publisher.c
#cc -g -Wall `pkg-config --cflags libavformat libavcodec libavutil` `pkg-config --libs libavformat libavcodec libavutil` -pthread -o server segment.o buffer.o publisher.o server2.c
cc -g -Wall `pkg-config --cflags libavformat libavcodec libavutil` -pthread -o server segment.o buffer.o publisher.o server2.c `pkg-config --libs libavformat libavcodec libavutil`
server2.c: In function ‘accept_thread’:
server2.c:301:66: warning: passing argument 4 of ‘av_opt_get’ from incompatible pointer type [-Wincompatible-pointer-types]
  301 |             av_opt_get(client, "method", AV_OPT_SEARCH_CHILDREN, &method);
      |                                                                  ^~~~~~~
      |                                                                  |
      |                                                                  char **
In file included from server2.c:8:
/usr/include/x86_64-linux-gnu/libavutil/opt.h:757:84: note: expected ‘uint8_t **’ {aka ‘unsigned char **’} but argument is of type ‘char **’
  757 | int av_opt_get         (void *obj, const char *name, int search_flags, uint8_t   **out_val);
      |                                                                        ~~~~~~~~~~~~^~~~~~~
server2.c:302:68: warning: passing argument 4 of ‘av_opt_get’ from incompatible pointer type [-Wincompatible-pointer-types]
  302 |             av_opt_get(client, "resource", AV_OPT_SEARCH_CHILDREN, &resource);
      |                                                                    ^~~~~~~~~
      |                                                                    |
      |                                                                    char **
In file included from server2.c:8:
/usr/include/x86_64-linux-gnu/libavutil/opt.h:757:84: note: expected ‘uint8_t **’ {aka ‘unsigned char **’} but argument is of type ‘char **’
  757 | int av_opt_get         (void *obj, const char *name, int search_flags, uint8_t   **out_val);
      |                                                                        ~~~~~~~~~~~~^~~~~~~
server2.c: In function ‘main’:
server2.c:440:5: warning: ‘av_register_all’ is deprecated [-Wdeprecated-declarations]
  440 |     av_register_all();
      |     ^~~~~~~~~~~~~~~
In file included from server2.c:9:
/usr/include/x86_64-linux-gnu/libavformat/avformat.h:1955:6: note: declared here
 1955 | void av_register_all(void);
      |      ^~~~~~~~~~~~~~~

[stokedout]

I have the same output but they're only warnings.