cc -pthread -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations unistd/_CS_POSIX_V8_WIDTH_RESTRICTED_ENVS.c -o unistd/_CS_POSIX_V8_WIDTH_RESTRICTED_ENVS -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lcrypt -latomic unistd/_CS_POSIX_V8_WIDTH_RESTRICTED_ENVS.c:2:17: error: ‘_CS_POSIX_V8_WIDTH_RESTRICTED_ENVS’ undeclared here (not in a function); did you mean ‘_CS_V7_WIDTH_RESTRICTED_ENVS’? 2 | int const foo = _CS_POSIX_V8_WIDTH_RESTRICTED_ENVS; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | _CS_V7_WIDTH_RESTRICTED_ENVS