message: build: make HAVE_O_CLOEXEC available outside LevelDB (bugfix)
diff: @@ -1161,6 +1161,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <fcntl.h>]],
  [ AC_MSG_RESULT(yes); HAVE_O_CLOEXEC=1 ],
  [ AC_MSG_RESULT(no); HAVE_O_CLOEXEC=0 ]
  )
  +AC_DEFINE_UNQUOTED([HAVE_O_CLOEXEC], [$HAVE_O_CLOEXEC], [Define to 1 if O_CLOEXEC flag is available.])
  dnl crc32c platform checks
  AC_MSG_CHECKING(for __builtin_prefetch)
  