m68knommu: fix 68000 CPU link with no platform selected

If building for a nommu m68k classic CPU and no platform (board) is
selected then the final link fails with:

     LD      vmlinux.o
   m68k-linux-ld: cannot find arch/m68k/kernel/head.o: No such file or directory
   make: *** [Makefile:1158: vmlinux] Error 1

Not selecting a platform is ok, that is a generic 68000 system build.
All of the platform selections are for 68328 variants.

The underlying problem is that the CPU config option (CONFIG_M68000)
ends up not being set, it is currently only selected by one of the
platform choices.

Change CONFIG_M68000 so that it is always enabled for the nommu m68k
classic configuration.

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index 16ea9a67723c09dcb820d933c10a146bb0d1631a..ed719a855e6a9126f74827fbba65330124fd18a0 100644 (file)
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -37,7 +37,7 @@ endchoice
 if M68KCLASSIC
 
 config M68000
-       bool
+       def_bool y
        depends on !MMU
        select CPU_HAS_NO_BITFIELDS
        select CPU_HAS_NO_CAS