cc -O2 -pipe  -pthread -I/usr/local/include  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations unistd/_SC_V8_ILP32_OFFBIG.c -o unistd/_SC_V8_ILP32_OFFBIG -D_POSIX_C_SOURCE=202405L  -lm -lpthread -L/usr/local/lib  -lintl
unistd/_SC_V8_ILP32_OFFBIG.c:2:17: error: use of undeclared identifier '_SC_V8_ILP32_OFFBIG'
    2 | int const foo = _SC_V8_ILP32_OFFBIG;
      |                 ^
1 error generated.