_LARGEFILE64_SOURCE
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
#ifdef _LARGEFILE64_SOURCE
#elif defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
(defined(_LARGEFILE64_SOURCE) && !defined(_WIN32))
#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE)
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
(defined(_LARGEFILE64_SOURCE) && !defined(_WIN32))
#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)