config/kernel-objtool.m4

   1 dnl #
   2 dnl # 4.6 API for compile-time stack validation
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL], [
   5         AC_MSG_CHECKING([for compile-time stack validation (objtool)])
   6         ZFS_LINUX_TRY_COMPILE([
   7                 #undef __ASSEMBLY__
   8                 #include <asm/frame.h>
   9         ],[
  10                 #if !defined(FRAME_BEGIN)
  11                 CTASSERT(1);
  12                 #endif
  13         ],[
  14                 AC_MSG_RESULT(yes)
  15                 AC_DEFINE(HAVE_KERNEL_OBJTOOL, 1, [kernel does stack verification])
  16         ],[
  17                 AC_MSG_RESULT(no)
  18         ])
  19 ])