[grub-mkdevicemap] opendisk detection for NetBSD (fix inside)

[Grégoire Sutre]

Dear GRUB 2 developers,

I am trying GRUB 2 on NetBSD, and grub-mkdevicemap does not detect any 
device except the floppy drive.  According to util/grub-mkdevicemap.c, 
the problem comes from HAVE_OPENDISK, which should be defined when 
compiling on NetBSD.

The configure.ac script for GRUB Legacy contained the following lines:


# Get the filename or the whole disk and open it.
# Known to work on NetBSD.
AC_CHECK_LIB(util, opendisk, [GRUB_LIBS="$GRUB_LIBS -lutil"
  AC_DEFINE(HAVE_OPENDISK, 1, [Define if opendisk() in -lutil can be 
used])])


But I did not find anything similar in GRUB 2's configure -- is it 
possible to add them?

Thanks,

Grégoire