Fixes: libswscale/utils.c:1632:5: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined] #if USE_MMAP ^ libswscale/utils.c:1577:49: note: expanded from macro 'USE_MMAP' #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS) ^ Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>