emulators/qemu: build fail on current amd64

[John Hein]

Daichi GOTO wrote at 17:54 +0900 on Feb 11, 2009:
 > Juergen Lock wrote:
 > > In article <4990EF3E.5090908 at ongs.co.jp> you write:
 > >> After some days, I have tried to build qemu and kqemu with
 > >> latest amd64 current system, and I have gottten it success :)
 > >>
 > >> FYI, qemu works well but without kqemu.
 > >>
 > >> # /usr/local/etc/rc.d/kqemu start
 > >> kldload: can't load kqemu: Exec format error
 > >> /usr/local/etc/rc.d/kqemu: WARNING: kqemu module failed to load.
 > >> #
 > > 
 > > Oh?  Is there anything in dmesg, like a missing symbol?  Or did you
 > > update your world/kernel after building kqemu?  In that case you should
 > > rebuild your kqemu port...
 > 
 > # uname -a
 > FreeBSD parancell.ongs.co.jp 8.0-CURRENT FreeBSD 8.0-CURRENT #3: Mon Feb  9 14:18:09 JST 2009 
 > root at parancell.ongs.co.jp:/usr/obj/usr/src/sys/PARANCELL  amd64
 > # dmesg
 > (snip)
 > link_elf_obj: symbol unit2minor undefined
 > kldload: /boot/modules/kqemu.ko: Unsupported file type
 > (snip)

unit2minor was removed recently.
See recent commit to sys/sys/conf.h
Any in-tree drivers left that used unit2minor were fixed at the same time.

For kqemu-kmod, try this...

--- kqemu-1.3.0pre11/kqemu-freebsd.c.orig	2007-02-06 14:02:00.000000000 -0700
+++ kqemu-1.3.0pre11/kqemu-freebsd.c	2009-02-11 03:04:50.000000000 -0700
@@ -296,7 +296,11 @@
 
     r = clone_create(&kqemuclones, &kqemu_cdevsw, &unit, dev, 0);
     if (r) {
+#if __FreeBSD_version > 800061
+	*dev = make_dev(&kqemu_cdevsw, unit,
+#else
 	*dev = make_dev(&kqemu_cdevsw, unit2minor(unit),
+#endif
 	    UID_ROOT, GID_WHEEL, 0660, "kqemu%d", unit);
 	if (*dev != NULL) {
 	    dev_ref(*dev);