./conf43-21-1.c:1:13: warning: call to undeclared function 'pthread_create'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
int main(){ pthread_create(0, 0, (void*(*)(void*))0, 0); ;}
            ^
/usr/bin/x86_64-pc-linux-gnu-ld: cannot find -ll: No such file or directory
clang-15: error: linker command failed with exit code 1 (use -v to see invocation)
/usr/bin/x86_64-pc-linux-gnu-ld: cannot find -ly: No such file or directory
clang-15: error: linker command failed with exit code 1 (use -v to see invocation)
./conf43-21-1.c:1:13: warning: call to undeclared function 'listen'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
int main(){ listen(0, 0); ;}
            ^
/usr/bin/x86_64-pc-linux-gnu-ld: cannot find -lxnet: No such file or directory
clang-15: error: linker command failed with exit code 1 (use -v to see invocation)
./conf43-21-1.c:1:13: warning: call to undeclared function 'dlclose'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
int main(){ dlclose(0); ;}
            ^