2.6.0-test7 "make oldconfig" breaks with O=...

Unpacked a complete fresh source tree (from -test1 patched up to -test7), then did

make O=../linux-foo oldconfig

where ../linux-foo is an object-only tree previously successfully used with -test6.

This is what I got back for my efforts :-)

----

make[2]: `scripts/fixdep' is up to date.
HOSTCC -fPIC scripts/kconfig/zconf.tab.o
gcc: /storage/work/linux-2.6/scripts/kconfig/zconf.tab.c: No such file or directory
gcc: No input files
make[2]: *** [scripts/kconfig/zconf.tab.o] Error 1
make[1]: *** [oldconfig] Error 2
make: *** [oldconfig] Error 2

drivers/char/esp.c: In function `autoconfig':
drivers/char/esp.c:2382: warning: `check_region' is deprecated (declared at include/linux/ioport.h:117)

  CC [M]  drivers/char/rocket.o
  CC [M]  drivers/char/cyclades.o
  CC [M]  drivers/char/stallion.o
  CC [M]  drivers/char/istallion.o

drivers/char/istallion.c: In function `istallion_module_exit':
drivers/char/istallion.c:850: warning: too few arguments for format
CC [M] drivers/char/epca.o
drivers/char/epca.c: In function `do_softint':
drivers/char/epca.c:3316: warning: `MOD_DEC_USE_COUNT' is deprecated (declared at include/linux/module.h:494)
CC [M] drivers/char/specialix.o
drivers/char/specialix.c: In function `sx_check_io_range':
drivers/char/specialix.c:289: warning: `check_region' is deprecated (declared at include/linux/ioport.h:117)

  CC [M]  drivers/char/moxa.o
  CC [M]  drivers/char/mxser.o
  CC [M]  drivers/char/ip2.o
  CC [M]  drivers/char/ip2main.o

drivers/char/ip2/i2cmd.c:142: warning: `ct89' defined but not used
CC [M] drivers/char/riscom8.o
CC [M] drivers/char/isicom.o
drivers/char/isicom.c: In function `ISILoad_ioctl':
drivers/char/isicom.c:155: warning: comparison of distinct pointer types lacks a cast
drivers/char/isicom.c:160: warning: comparison of distinct pointer types lacks a cast
drivers/char/isicom.c: In function `unregister_drivers':
drivers/char/isicom.c:1677: warning: `error' might be used uninitialized in this function

  CC [M]  drivers/char/synclink.o
  CC [M]  drivers/char/synclinkmp.o
  CC [M]  drivers/char/n_hdlc.o
  CC [M]  drivers/char/sx.o

drivers/char/sx.c: In function `sx_open':
drivers/char/sx.c:1423: structure has no member named `tty' make[2]: *** [drivers/char/sx.o] Error 1
make[1]: *** [drivers/char] Error 2
make: *** [drivers] Error 2

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