config/user-frame-larger-than.m4

   1 dnl #
   2 dnl # Check if gcc supports -Wframe-larger-than=<size> option.
   3 dnl #
   4 AC_DEFUN([ZFS_AC_CONFIG_USER_FRAME_LARGER_THAN], [
   5         AC_MSG_CHECKING([for -Wframe-larger-than=<size> support])
   6
   7         saved_flags="$CFLAGS"
   8         CFLAGS="$CFLAGS -Wframe-larger-than=1024"
   9
  10         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])],
  11         [
  12                 FRAME_LARGER_THAN=-Wframe-larger-than=1024
  13                 AC_MSG_RESULT([yes])
  14         ],
  15         [
  16                 FRAME_LARGER_THAN=
  17                 AC_MSG_RESULT([no])
  18         ])
  19
  20         CFLAGS="$saved_flags"
  21         AC_SUBST([FRAME_LARGER_THAN])
  22 ])