boot/efi: Prefer nm to objdump
commitb1bc033d67e232dcd98d66a976a14c3325cb2c4a
authoremaste <emaste@FreeBSD.org>
Sat, 12 Mar 2016 21:44:33 +0000 (12 21:44 +0000)
committeremaste <emaste@FreeBSD.org>
Sat, 12 Mar 2016 21:44:33 +0000 (12 21:44 +0000)
treefd22776e291ee6af273b7aeeefdc69c2946f8a58
parentb1e2503a5c8eb116ca3d3da924ff104d666788cd
boot/efi: Prefer nm to objdump

Both objdump and nm are equally capable of reporting undefined symbols.

This gets us a step closer to building without binutils as we have an nm
implementation from ELF Tool Chain.

Reviewed by: bdrewery
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5613
sys/boot/efi/boot1/Makefile
sys/boot/efi/loader/Makefile