_CS_POSIX_V7_ILP32_OFFBIG_CFLAGS

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
enum _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS = _Anonymous_40._CS_POSIX_V7_ILP32_OFFBIG_CFLAGS;

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