DEF_MEM_LEVEL     140 3rdparty/zlib/gzguts.h #  define DEF_MEM_LEVEL 8
DEF_MEM_LEVEL     142 3rdparty/zlib/gzguts.h #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
DEF_MEM_LEVEL      64 3rdparty/zlib/zutil.h #  define DEF_MEM_LEVEL 8
DEF_MEM_LEVEL      66 3rdparty/zlib/zutil.h #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL