/opt/IBM/openxlC/17.1.1/bin/ibm-clang -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations unistd/getentropy.c -o unistd/getentropy -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -latomic
unistd/getentropy.c:5:30: error: use of undeclared identifier 'getentropy'
int (*foo)(void *, size_t) = getentropy;
                             ^
1 error generated.