help! my golang(cgo) so library can't call export function failed, thanks

I can't build solution:

gcc -Wall -g -o elfloader elf_loader.h elf_loader.c main.c wheelc/list.c -ldl -lm -lpthread
elf_loader.c: In function ‘run_elf_module’:
elf_loader.c:1106:33: error: ‘__fxstat’ undeclared (first use in this function); did you mean ‘fstat’?
1106 | functions[N___FXSTAT] = __fxstat;
| ^~~~~~~~
| fstat
elf_loader.c:1106:33: note: each undeclared identifier is reported only once for each function it appears in
make: *** [Makefile:2: all] Error 1

Thank you for any help!