clang -O2  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_wait/WCONTINUED.c -o sys_wait/WCONTINUED -D_POSIX_C_SOURCE=202405L  -lm  -lintl
sys_wait/WCONTINUED.c:8:17: error: use of undeclared identifier 'WCONTINUED'
int const foo = WCONTINUED;
                ^
1 error generated.