clang -O2  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations semaphore/sem_open.c -o semaphore/sem_open -D_POSIX_C_SOURCE=202405L  -lm  -lintl
../out/minix/include/semaphore/sem_open.o:(.data+0x0): undefined reference to `sem_open'
clang: error: linker command failed with exit code 1 (use -v to see invocation)